Concrete Openings - December 14

D E C E M B E R 2 0 1 4

THE OFFICIAL MAGAZINE OF CSDA

W W W. C O N C R E T E O P E N I N G S . C O M

South Street Seaport

RedevelopmentContractor Revitalizes Famous New York Pier

TENNESSEE DAM STRENGTHENING PROJECT

CUTTER SERVES COAST GUARD IN SAN JUAN

OHIO SPORTS STADIUM TRANSFORMED

CSDA 2015 CONVENTION PAGE 21FEB. 3

–6, 2015

BEST DEAL ON

REGISTRATION

PAGES 31, 43 & 59

CONCRETE OPENINGS | 1WWW.CONCRETEOPENINGS.COM

PRESIDENT’S PAGE

JUDITH O’DAYCSDA President

T he old saying, “Time flies when you are having fun” certainly applies to these last two years for me. I began my term as CSDA President in March 2013 with a list of things I wanted

to see accomplished, and seemingly ample time to get it done. Fast forward to winter 2014/15, and although a number of things have been undertaken, my wish list for CSDA has continued to expand. Thankfully, I have many years as a “Past President” to finish some of these projects.

To our credit, we have revived the quest to put in place a full-time marketing consultant for the association and have begun to set aside funding for the position. This person will work to bring CSDA Standards and Specifications, as well as the value of CSDA training and certifica-tion programs, to specifiers and architects who create project bids. This will improve the professionalism of the industry and the companies that work in it.

The Polishing Committee has made significant inroads in addressing the need for a consistent, measurable method for defining a polished floor and has developed a training program and an industry Standard. A number of companies involved in the polishing industry have become CSDA members as a result of these accomplishments.

The CSDA Training Program continues in various locations around the country, and a new pricing structure has increased availability and affordability for all. We continue to offer training at World of Concrete and Operator Certification at St. Petersburg College each fall, and are currently looking at other opportunities to conduct industry training.

Each committee has made significant progress on the goals identified early in my tenure as President. I owe heartfelt thanks to the committee chairs and members who reliably show up and do the work. They are the folks who identify significant challenges or issues that affect our industry. They not only provide us with discussion, education

and solutions but generously donate their time, experience and insight to help CSDA remain a vibrant and relevant organization.

I also want to acknowledge and thank the staff at O’Brien Inter-national for all their fine work. These are the people who manage our association and keep us on track and out of trouble. Pat and Erin O’Brien continue to do an excellent job advancing the association.

The New Year brings several chances to engage with CSDA staff and membership. The first is at World of Concrete in Las Vegas, held February 3-6, 2015, where CSDA will exhibit, offer three training classes and hold networking events. In addition, a large number of manufacturer members will be exhibiting. Word is that exhibit space is larger than last year, and although there is no more free admission, CSDA continues to offer the best deal around to attend the show. Registering through CSDA helps the association earn a significant rebate from the show organizers. Look out for more details in this issue, or visit www.csda.org.

The second opportunity is at CSDA’s 43rd Annual Convention & Tech Fair, March 30 to April 2, 2015. The Rennaissance Vinoy in St. Petersburg, Florida offers a great location for the event, as well as access to the water and the night life of the city. I hope you will take advantage of these opportunities to get together with a great group of professionals who are involved with CSDA.

I want to thank you for the honor of serving as CSDA President for the last two years. I have had a chance to interact with many of you ‘up close and personally’ and am truly impressed by the commitment and openness you all share. I believe that this association will continue to grow and succeed through shared experiences and by embracing change and new technologies.


CSDA OFFICERS

President, Judith O’Day Terra Diamond Industrial

[email protected]

Vice President, Kevin Baron Western Saw, Inc.

[email protected]

Secretary/Treasurer, Mike Orzechowski DITEQ Corporation [email protected]

Past President, Jim Dvoratchek Hard Rock Concrete Cutters, Inc.

[email protected]

Executive Director, Patrick O’Brien Concrete Sawing & Drilling Association

[email protected]

CSDA BOARD OF DIRECTORS (Terms expiring in 2015)

Ty Conner Austin Enterprise

[email protected]

Mark DeSchepper Construction Solutions, LLC

[email protected]

Matthew Finnigan National Concrete Cutting, Inc.

[email protected]

Mike Greene Greene’s, Inc.

[email protected]

Greg Lipscomb Diamond Products Limited

[email protected]

Sid Kilgore Dixie Diamond Manufacturing

[email protected]

CSDA BOARD OF DIRECTORS (Terms expiring 2016)

Paul DeAndrea DeAndrea Coring & Sawing, Inc.

[email protected]

Matt DragonHilti, Inc.

[email protected]

Patrick HarrisConcrete Renovation, Inc.

[email protected]

Kellie VazquezHoles Incorporated

[email protected]

Kevin WarneckeICS, Blount Inc.

[email protected]

Ryan WesselschmidtHusqvarna Construction Products

[email protected]

C O N C R E T E C A S E S

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THE OFFICIAL MAGAZINE OF CSDA

South Street Seaport RedevelopmentContractor Revitalizes Famous New York Pier

Semper Paratus [Always Ready]Fast Response Cutter Serves U.S. Coast Guard

SPARC of IngenuityDiamonds Key to Baseball Stadium Transformation

Strong BondConcrete Cutters Team Up for Dam Fine Job

4 | DECEMBER.14

CONCRETE OPENINGS MAGAZINE

Official Magazine of the Concrete Sawing & Drilling Association

Volume 23, Number 4 ISSN: 1093-6483

Concrete Openings magazine is published by O’Brien International, Inc., four times each calendar year in March, June, September and

December. Editorial contributions are welcomed and advertisements are encouraged. Please contact the

Concrete Sawing & Drilling Association 100 2nd Avenue South

Suite 402N St. Petersburg, FL 33701

Tel: 727-577-5004 Fax: 727-577-5012

WWW.CSDA.ORG

Magazines, newspapers and private individuals are welcome to reproduce, in whole or part, articles published herein provided that acknowledgements are made in the following manner: “Reprinted

courtesy of the Concrete Sawing & Drilling Association, Concrete Openings magazine, Issue Date.”

No alterations should be made in the text of any article.

PUBLISHER

Patrick O’Brien

ASSOCIATE EDITOR Russell Hitchen

CONCRETE CASE CONTRIBUTORS

Stu Fishman

Matthew Hephner

Scott Mattlin

John Robinson

Joe Shebesta

Jason Young

EDITORIAL REVIEW COMMITTEE

Skip Aston

Rod Newton

Pat Stepenski

The information and recommendations in this magazine are provided for use by fully qualified, professional personnel. The Concrete Sawing & Drilling Association and the publisher

disclaim any responsibility as to their use by readers and shall not be liable for damages arising out of the use of the foregoing information.

All bylined articles published in this magazine represent solely the individual opinions of the writers and not necessarily those of the

Concrete Sawing & Drilling Association.

C O N T E N T S

22 The Business of Business Know Your Job: Become an All-Star Team Member A Lesson Learned from Wilt Chamberlain

30 Core Health Taste the Rainbow (of Power Foods)

38 Safety Counts Happy New Year! – OSHA’s Revised Recordkeeping Rule Has Major Implications for Employers

42 Polished Perspective The Architect’s Viewpoint: Specifying the Right Floor—Part II

48 Tech Talk Fine Dust and Slurry Vacuums

54 Industry Bits

64 Certification

66 Membership

68 Calendar

72 Director’s Dialogue

48Cover Photo: South Street Seaport, New York City, New York.

6 | DECEMBER.14


Operators core drilled 1,967 holes in the pier's concrete deck.


As part of a major redevelopment project on a pier in Lower Manhattan, New York, a concrete cutting contractor was given the

challenge of coring 2,000 holes, flat sawing 22,000 linear feet and wire sawing 400 pier caps. The contractor’s work kept the overall demolition phase of the project on schedule and has helped to revitalize a famous landmark in New York City.

The South Street Seaport is situated along the East River in Manhattan, close to the city’s financial district. The Seaport had a series of 19th-century commercial buildings that were linked to New York’s maritime heritage, but the cost associated with repairing and


Contractor Revitalizes Famous New York Pier

8 | DECEMBER.14


providing ongoing maintenance for the Seaport had begun to seriously impact the city’s budget—particularly after Hurricane Sandy caused severe damage to several structures in 2012. With the redevelopment of the Seaport’s main structure, Pier 17, underway, the search began to find a specialist concrete sawing and drilling contractor that could assist general contractor Trevcon Construction Co., Inc. with the demolition work.

CSDA member Atlantic Concrete Cutting, Inc. of Mount Holly, New Jersey, was selected to do sawing and drilling work and help the general contractor remove the existing pier. Specifically, the contractor was responsible for the cutting and removal of the existing concrete pier deck, the cutting of concrete pier caps and piles and the coring of pick holes so cut sections could be removed by crane.

“The South Street Seaport is part of a historic area in New York City. The local community possesses a strong sense of identity and is politically active,” said Stu Fishman, project manager for Atlantic Concrete Cutting. “Diamond cutting was selected because it creates less disruption in terms of noise, vibration and debris than other demolition methods, which was important for the

The pier deck was cut into sections using flat saws, some cuts being as deep as 18 inches.



surrounding environment. Our job was simple—demolish the pier with minimal noise, minimal debris and with minimal disturbance to the local community.”

Before any work was done, the contractor assessed the jobsite and identified safety measures. Because the job was close to water, it was necessary for life vests to be worn by all employees on the jobsite while access restrictions were put in place around the perimeter of the work area. Overhead picks by crane required heightened jobsite awareness, good communication, access restrictions and task coordination with other contractors on site.

Atlantic Concrete Cutting mobilized on June 5, 2014, with a specific time frame of 16 weeks for the work. Operators started by core drilling 6-inch-diameter pick holes through the concrete deck, which was as thick as 6 feet in some areas. The company had between two and four operators completing up to 100 holes per 8- to 10-hour shift—approximately three holes per operator, per hour. Over the course of the job, core drilling operators created 1,967 holes in the pier deck using Shibuya Blu-Drill units with auto-feed features.

SOUTH STREET SEAPORT

REDEVELOPMENT PROJECT

In October 2013, The Howard Hughes Corporation (HHC) officially commenced the redevelopment of the South Street Seaport, located adjacent to the East River in Lower Manhattan. The new Pier 17 will have a mix of retail, dining and entertainment options. A 1.5-acre rooftop will include a restaurant, two outdoor bars and an amphitheater that will hold up to 4,000 people.

The redeveloped Pier 17 is expected to open in 2016 and provide major economic benefits for Lower Manhattan and the City of New York. During construction, the redevelopment is estimated to generate over $260 million in total economic output and produce over 1,000 jobs. Upon completion, economic activity is estimated to be $193 million annually. It will generate over $10 million in tax revenues to the City and create 1,150 permanent jobs.

The pier’s LEED certified building design pays homage to the maritime and world market heritage of the City’s working waterfront, provides expansive views of the Brooklyn Bridge and improves pedestrian access by connecting the street grid to the pier. For more information, visit www.southstreetseaport.com.

Photos courtesy of The Howard Hughes Corporation/SHoP Architects.

1 0 | DECEMBER.14

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Cutting of the concrete pier deck began eight days later, on June 13, with two Husqvarna 8400 flat saws. Operators made a series of latitudinal and longitudinal cuts to divide the slab into pieces that could be lifted out and removed by crane. Atlantic Concrete Cutting operators made 21,850 linear feet of cuts on the pier deck, some as deep as 18 inches. Upon completion, Trevcon Construction rigged and removed the cut deck sections by crane and exposed the pier caps and piles for the contractor’s next task.


Cut sections were rigged and removed from the work area by crane.

The contractor made 21,850 linear feet of cut lines in the pier deck.

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1 2 | DECEMBER.14

COMPANY PROFILE

Atlantic Concrete Cutting, Inc. has been a CSDA member for 23 years and is based in Mount Holly, New Jersey. Support operations are located in Totowa, New Jersey and Spring City, Pennsylvania. The company has been in business since 1991 and has 22 operators and 31 trucks, and offers the services of core drilling, wall sawing, wire sawing, flat sawing, curb sawing, sealing, grooving, grinding, polishing, selective demolition and ground penetrating radar. Atlantic Concrete Cutting, Inc. is a CSDA Certified Company and a CSDA Certified Operator company with DBE/WBE certifications issued by numerous state agencies and authorities.

RESOURCES

General Contractor Trevcon Construction Co., Inc.

Sawing and Drilling Contractor: Atlantic Concrete Cutting, Inc. Mount Holly, New Jersey Phone: 609-261-7200 Email: [email protected] Website: www.atlanticconcretecutting.com

Methods Used: Core Drilling, Flat Sawing, Wire SawingREVIEW AND COMMENT ON THIS ARTICLE AT:

WWW.CONCRETEOPENINGS.COM/FORUM.CFM

The pier had a series of caps that had to be removed before 610 piles measuring 14 inches by 14 inches could to be cut to elevation. Two Hilti DSW 3018-E wire saws were set up in the work area to make the necessary cuts using 1,200 feet of diamond wire, starting with the pier caps. Over 10 weeks, operators performed 429 pull cuts with the wire saws through 4-foot by 3-foot cross-sections of the pier caps, with each wire saw cut taking approximately 45 minutes to complete. The 14-inch by 14-inch pile cuts then took a further 10 minutes to complete and were cut in clusters of six or nine, so all the pier caps and piles were cut within 10 weeks. Atlantic Concrete Cutting then had an additional 1,000 square feet of wire sawing work to cut various supports left after demolition of the old pier building. Some back wall cuts were also made to separate the pier from the Fulton Street Fish Market, a historic building that was to remain in place. All work was completed on September 11—one month ahead of schedule.

“The guys from Trevcon Construction worked well with our team, resulting in the project being a huge success. We have built a reputation for providing quality service using skilled operators with the right equipment. This high-profile project is a perfect example of why our diamond sawing and drilling techniques have time- and cost-saving advantages over other methods,” concluded Fishman.

Due for completion in 2016, the South Street Seaport is poised to be a popular venue for local residents and tourists alike. The use of diamond tools has helped push the demolition phase of the project ahead of schedule and the construction of the new Pier 17 building remains on track.


Some sections weighed over 45,000 pounds.

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Concrete Cutters Team Up for Dam Fine Job



T hree CSDA member companies recently combined resources to take on challenging concrete sawing and drilling

tasks as part of a $40 million dam strengthening project in Tennessee.

The Cherokee and Douglas Dams had been identified as problematic for the Tennessee Valley Authority (TVA) in its quest for licensing with the Nuclear Regulatory Commission to bring the Watts Bar Unit 2 Nuclear Reactor online in 2015. Issues at the two 70-plus-year-old dams meant they were not up to current standards, so these issues had to be addressed before the new reactor can begin operation. A total of 104 post-tension anchors are being installed to secure each concrete structure to the bedrock below. Eighty-four are being installed at Cherokee and twenty at Douglas.

The anchors, between 150 and 235 feet long, are being placed in 15-inch bores that extend from the top of the dam deep into bedrock in non-spillway areas of the dam. Where spillways are located, anchors will be placed at an angle from the front of the dam. The cables are composed of 54 steel strands, each more than 0.5 inches thick. A 435-foot crane is being used to lower them from the top. Once installed, these anchors will be grouted and tensioned with more than a million pounds of pressure. A separate project will increase the height of Cherokee Dam and three other dams to render them impervious to a Probable Maximum Flood (PMF). The PMF is used in the hydraulic design of project components, for which virtually complete security from flood-induced failure is desired.

Cutting Edge Services Corporation, a CSDA member from Batavia, Ohio, was approached by general contractor, Barnard Construction, to aid with the construction of 52 anchor pockets—32 on the Cherokee Dam and 20 on the Douglas Dam. The dimensions of the pockets were 48 inches by 48 inches and 24 inches deep. The pockets at Cherokee Dam were done first using a diesel slab saw from Diamond Products and a Brokk 180. This turned out to be time consuming and tough to hold tolerances, so Cutting Edge designed a “push” style wire saw that was mounted via a core drill stand. The first step was to drill 8-inch-diameter holes in each corner of the marked cut area, then use the push-type saw to make four tapered vertical cuts. This was followed by the bottom horizontal cut, made using a 9-millimeter wire to fit through the existing cut lines and custom-designed downhole swivel pulleys. Operators completed two or three of these pockets per shift.

A custom wire saw system was used to create 48-inch by 48-inch anchor pockets.

The concrete anchor pockets measured 24 inches deep.

1 6 | DECEMBER.14

Another part of Cutting Edge’s scope of work was to core drill 18 pocket holes 42 inches in diameter on the Cherokee Dam spillway. For this particular task, Cutting Edge enlisted the help of fellow CSDA member Tri-State Concrete Sawing, Inc. of Cincinnati, Ohio. The upper part of the pocket was 49 inches deep while the bottom was only 24 inches, drilled at an approximate 60-degree angle to the spillway. Short cores presented a challenge as this meant regular stops in the drilling work to pull cores, so three 3-inch-diameter holes were drilled at “10:00,” “12:00” and “2:00” clock face angles. Anticipating the creation of multiple short cores, Cutting Edge designed and built custom hydraulic splitters to break the cores and a mini excavator was used to pull the cores out (some of which had to be navigated around the dam’s piping system). Starting such a large bit on an angled surface was also a challenge, so Tri-State designed and built a special drill rig to secure the bit when starting. The rig was portable, which presented large savings in setup time at each drilling location.

In addition to the drilling work, Tri-State was also contracted to perform approximately 20,000 inch feet of concrete wall sawing for the


Operators cored 18 pocket holes in the dam walls measuring 42 inches in diameter.

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removal of dam flood walls. This work was completed in 12 days and the contractor cut through wall sections measuring between 12 to 18 inches thick with a Pentruder saw.

Next, two 2-inch-diameter core holes were required to run sensor lines on the Cherokee Dam spillway. These holes were made at an approximate 10-degree angle but were over 65 feet long. Despite the depth of the holes, the target locations were only missed by a couple of inches and met the requirements. Each hole took around two days to drill, including a detailed setup period. Even at this stage of the work, a large amount of concrete had been cut and cored. However, this was not the end of the job for Cutting Edge and another CSDA contractor.

Aside from the sawing and drilling work, a task was set to provide a profile for new concrete to bond to on the dam walls and slabs. For this job, Cutting Edge contracted another CSDA member, Cuts, Inc. of Knoxville, Tennessee, to scabble 10,000 square feet of wall and slab surfaces with a Brokk 180. Cuts, Inc. completed the scabbling task, but this was not the contractor’s only involvement in the overall strengthening project. In addition to work done for Cutting Edge, Cuts, Inc. completed several jobs for general contractors Nicholson Construction, Barnard Construction and Correct Construction from March to August. In total, the contractor worked over 2,100 man hours on the project.

Nicholson Construction used Cuts, Inc. to produce 52 vertical 18-inch-diameter holes to a depth of 5.5 feet on the top of the two dams. Working within the 48-inch by 48-inch square pockets created by Cutting Edge and Tri-State, the team from Cuts, Inc. utilized an automated core drill custom-mounted on a skid steer to make and pull 1,400-pound cores for removal. Hi-cycle DD-500 core rigs from Hilti were also used for the work. Some cores did not break out as planned, so any remaining debris was broken down by a Brokk 180. Cuts, Inc. then set up on the Cherokee Dam spillway to create 18 18-inch-diameter holes to a depth of 5.5 feet and at a 56.3-degree angle. A further 32 holes were made 9 inches in diameter on the dam’s training wall, which was an angular

structure that ran perpendicular to the dam. These holes were also 5.5-feet deep but were made on a 38-degree angle using the same DD-550 core drills as the other tasks. They were made within existing 18-inch-diameter holes created by Cutting Edge.

Cuts, Inc. was then employed by Barnard Construction to rock and core drill 619 holes between 2 and 2.5 inches in diameter on top of the dams to a depth of 5 feet. These holes were used to insert rebar for the addition of new concrete that strengthened the existing walls. Then more work was provided by Correct Construction, who contracted Cuts, Inc. to core drill, hand saw and chip out 82 pockets in the spillway measuring 24 inches long, 4 inches wide and 5 inches deep. These pockets were made to allow for the installation of a new work platform, which was attached to the dam spillway. For this work, the contractor worked from a lift set on a barge and also core drilled 248 holes within existing holes in

a steel mounting bracket, utilizing a custom-built magnetic drill base. These holes were made to help secure a large work platform in place. The platform held the cranes and drilling equipment needed to make the anchor holes through the dam and into the earth.


One contractor engineered a skid steer-mounted core drill rig for creating 18-inch-diameter holes in the anchor pockets.

In total, 52 holes were cored in the anchor pockets to a depth of 5.5 feet.


2 0 | DECEMBER.14

REVIEW AND COMMENT ON THIS ARTICLE AT: WWW.CONCRETEOPENINGS.COM/FORUM.CFM

COMPANY PROFILE

Cutting Edge Services Corporation has been a CSDA member for 17 years and is based in Batavia, Ohio. Support operations are located in Houston and Richland, Washington. The company offers primary services of engineered solutions, diamond wire sawing, underwater cutting and core drilling. Cutting Edge has been in business for over 17 years, employs CSDA Certified Operators and is a CSDA Certified Company.

Based in Knoxville, Tennessee, Cuts, Inc. has been a CSDA member for two years. The company has been in business for ten years and offers the services of flat sawing, core drilling, wall sawing, wire sawing, hand sawing, grinding and floor preparation, robotic demolition and excavation. Cuts, Inc. has 14 employees, seven trucks and services Tennessee, North Carolina and all other states in the southeastern U.S.

Tri-State Concrete Sawing, Inc. is a returning CSDA member for 2014. Based in Cincinnati, Ohio, the company employs 15 employees, has 12 trucks and offer the concrete sawing and drilling services of flat sawing, core drilling, wall sawing and wire sawing.

Some Thoughts on the Project“This was a very difficult and challenging project, not just from a technical standpoint, but Matt and Scott’s teams were always there when we needed them,” said Joe Shebesta, project engineer for Cutting Edge Services. “The combined efforts of our three companies meant the successful completion of an enormous project with several demanding tasks.”

“All three CSDA members showed some great examples of ingenuity on this job. Each one of us had to build custom equipment that helped us conquer the challenges put before us, including Cutting Edge’s push-type wire saw rig, Tri-State’s angular core drill mounting rigs for the spillway pockets and our own custom skid steer-mounted core drill rig. I, for one, couldn’t be happier with the results,” said Matt Hephner, owner of Cuts, Inc.

“When we first learned about the scope of work, the tight schedule and the number of days to be completed of each of our tasks, I knew I had to make a mockup of the spillway at my shop and drill a test hole to make sure we could complete the 42-inch anchor pocket holes on schedule,” explained Scott Matt lin, president of Tri-State Concrete Sawing, Inc. “With help from Cutting Edge, the first test hole went well and the core removal was a success. I can’t speak highly enough about the guys from Cutting Edge and Cuts, Inc. and their professionalism. It was great to be a part of this project!”

RESOURCES

General Contractors: Barnard Construction, Correct Construction, Nicholson Construction

Sawing and Drilling Contractors: Cuts, Inc. Knoxville, Tennessee Phone: 865-922-0800 Email: [email protected] Website: www.cutsinc.org

Cutting Edge Services Corporation Batavia, Ohio Phone: 513-388-0199 Email: [email protected] Website: www.cuttingedgeservices.com

Tri-State Concrete Sawing, Inc. Cincinnati, Ohio Phone: 513-353-2468 Email: [email protected] Website: www.tristate-sawing.com

Methods Used: Core Drilling, Flat Sawing, Wall Sawing, Wire Sawing

A demolition robot was used to scabble 10,000 square feet of concrete on the dam wall.

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March 30–April 2 2015

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2 2 | DECEMBER.14

Know Your Job: Become an All-Star Team MemberA Lesson Learned from Wilt Chamberlain

By Mark Eaton

THE BUSINESS OF BUSINESS

How many of us run around every day, in business and in life, trying to play every position and doing everything for everybody? From

handling the ball to blocking the shots, we think that we can do it all and do it well!

When I was just starting college basketball with UCLA, Wilt Chamberlain took me aside and taught me the most important lesson of my life. I only had one job. And in 1989, knowing my job made me an All-Star basketball player. Wilt was right.

Many teams have a superstar who does more than one thing well, but without great teamwork even the greatest players stand little chance of winning every game.

SITTING ON THE BENCH

When I started as a basketball player at UCLA, I had some serious doubts about my future in the sport. After the first year, I looked back and felt that I had been an absolute failure. It just didn’t seem like I had what it took to be a success. It was like my dream was going up in smoke. I started to ask myself, “Am I good enough to be out here?”

I remembered what my basketball career in high school had been like. I spent most of my time warming the bench. I had quit playing the game after high school for a reason, and now I doubted my decision to return.

Then something happened that changed my life forever. Wilt Chamberlain taught me to know my job.

RUNNING AROUND THE COURT

Every afternoon that summer, I went to the gym at UCLA. All the greatest players in Los Angeles congregated in what we called the “old men’s gym” to test their skills against one another in pick-up games. Magic Johnson,

James Worthy, Michael Cooper and many other NBA players were there every day, and only the best players could join in.

One afternoon, I was trying to catch this fast little guard on the other team named “Rocket” Rod Foster. He would be at the basket when I was still at half court, doing my best to catch him. I tried everything and didn’t know what to do to get better.

I just stood there on the sidelines, hands on my knees, huffing and puffing, frustrated and thinking to myself, “I can’t do it.” I thought I would never be at the level these guys were at.

“IT’S NOT YOUR JOB”

As I stood on the sidelines, I suddenly felt a large, strong hand on my shoulder. I turned around, and there was Wilt Chamberlain, arguably the greatest basketball player of all time. Wilt had retired from basketball a few years before, but every afternoon he would still come over to the old men’s gym to watch the younger players work out. He had been watching me from the sidelines.

Wilt grabbed me by the shoulder, spun me around, looked me in the eye and said, “Young fella...first of all, you are never going to catch that man.” I said, “Thanks Wilt. I know that.”

I felt even more foolish about my basketball aspirations at this point, begrudging

the fact that I had played so poorly in front of this basketball legend.

Wilt continued, “What’s more important is; it’s not your job.” He took me by the arm out onto the basketball court. He positioned me right in front of the basket and told me, “Let me tell you what your job is…”

Wilt said, “Your job is to guard this basket. Your job is to stand right here and keep other players from scoring. I’ve watched you play, and I see the skill you have at defense. That is what you need to concentrate on.”

That day, everything changed for me. I

Mark Eaton in action for the Utah Jazz.


began to understand what I needed to do on the court. I understood what I could be great at. Wilt showed me how I could be invaluable to my team.

I wasn’t fast and I wasn’t that good at scoring, but I did have a talent for preventing others from scoring goals. At 7 foot 4 inches tall, I could be a force on defense to be reckoned with.

BECOMING AN ALL-STAR

After Wilt Chamberlain pulled me aside and showed me what he saw in me, I stopped running around, trying to do everything on the court. My job was to play defense and guard the area under the basketball net. Before the game, when everyone was warming up, I would walk around the area under the basket, and say to myself, “This is my house and I will make sure that nobody gets in here.”

I focused on the one thing I could be great at, and I went on to become one of the great defensive players in the NBA. Four years later, in 1985, I broke the record for the most blocked shots in a single season, 456, which is still the NBA record. I was named Defensive Player of the Year twice. In 1989, I became an All-Star.

Are you All-Star material? If you really know your job, you will get there. Start by asking your coworkers, your family and your friends, “What are my strengths?” You might be surprised what you hear. Look for that hand on your shoulder—you’ll be surprised to see who it is when you turn around.

Sometimes it takes someone great to see how we are great. But you don’t need it to be Wilt Chamberlain. Look for the greatness in your co-workers and show others the greatness in yourself.

NARROW YOUR FOCUS

When we get too focused on exceeding expectations, sometimes we forget the basics.

Narrow your focus and intensify it. Do what you do best. While I was busy running around the court, trying to catch every point guard, I didn’t get underneath the basket quick enough to do my job on defense.

In order to make it to the top, play to your strengths and know your job. If everyone on your team focuses on what they do best, you have a great plan for victory.

Mark Eaton is a business speaker and coach

who works with organizations and individuals

sharing the four commitments that bring

about teamwork, breakthrough success

and sustained cultural change. His journey

from auto mechanic to record-breaking NBA

player, combined with his practical strategies

and principles, help organizations succeed

in the business world. Eaton will give the

keynote presentation at CSDA’s 43rd Annual

Convention & Tech Fair in St. Petersburg,

Florida, March 31, 2015. He can be reached at

[email protected] or by visiting www.7ft4.com.

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2 4 | DECEMBER.14

A deteriorating concrete wharf and two finger piers were to be replaced at the U.S. Coast Guard Sector San Juan in Puerto Rico.



E arlier this year, a general contractor was commissioned by the United States Coast Guard to remove an old concrete wharf and several

finger piers at the military organization’s boat station in San Juan, Puerto Rico. The structures were to be replaced by a newly-designed wharf that would be the port for the station’s new vessel—the Fast Response Cutter (FRC). In order to complete the project on time and keep the water around the wharf as free from debris as possible, another type of fast response cutter was needed.

As part of the U.S. Coast Guard Sector San Juan Cutter Homeport project, a specialist contractor was required to make precise cuts through the 14-inch-thick concrete deck of the existing wharf and separate over 150 18-inch by 18-inch piles at their caps. The cutting contractor would also assist with the removal of the wharf deck sections. The general contractor for the project, CH2MHill, subcontracted Orion Marine Group for the demolition work and the construction of the new wharf and piers. Orion then subcontracted CSDA member Accu-Cut Concrete Services, Inc., of Palm Harbor, Florida, to perform concrete cutting techniques that would deconstruct the existing structures quickly and safely.

Semper Paratus [Always Ready]Fast Response Cutter Serves U.S. Coast Guard

2 6 | DECEMBER.14

“Our main task was to assist in the removal of the main wharf deck and pile caps, leaving its main piles intact for reuse. We also had to cut and help remove finger piers Charlie and Delta at the station, including the decks, pile caps and the piles themselves,” explained John Robinson, owner of Accu-Cut. “Using our specialized cutting equipment was the most efficient way to remove heavily-reinforced concrete sections without excessive debris falling into the water. It also insured that we completed the work without damaging the piles that were to be reemployed.”

Hydraulic hammers had been used on some of the less sensitive areas of the wharf, but most of the main structure had experienced some deterioration and the bottom mat of rebar was exposed. Therefore, any further work on the concrete had to be performed with low levels of noise and vibration.

Accu-Cut began by planning and laying out cut lines for the 14-inch-thick decks on the main wharf and on piers Charlie and Delta. The concrete deck areas were divided into a series of sections ranging from 12 feet long or wide on some of the finger piers, to 17 feet long or wide on the main wharf. Flat sawing equipment was first set up on pier Charlie for cutting to commence. An operator made two cuts lengthways along the pier followed by 34 cuts across the pier’s width, taking around 18 hours to complete. The cut sections were left sitting on their pile caps until a crane positioned on a barge was used to lift and remove each one. The process was repeated for pier Delta in approximately the same amount of time.

Flat sawing work then began on the main wharf deck, which was also cut and removed in sections weighing between 25,000 and 50,000 pounds depending on their relative location to the crane. Pieces had to be cut in line with the crane’s reach and lifting capacity, so as not to cause it to lose balance. While the wharf deck was being removed, the contractor began wire sawing the main wharf pile caps into sections up to around 50,000 pounds each. Wire cuts were made in 3-foot by 3-foot cross sections through the caps, after which they were left standing free on 18-inch by 18-inch piles.

All but two of the 177 piles under the caps were cut using Accu-Cut’s patented Stingray pile saw, which took between six and ten minutes to cut through each one. Regular readers of Concrete Openings may remember the Stingray, named so because of its shape and use underwater, from its use on a similar task in Accu-Cut’s Bayway To Go! job story [December 2013]. The diamond wire sawing system intergrated into the Stingray allowed it to be positioned around the piles and cut them to different elevations. When cutting was almost complete, cap and pile sections were rigged and held by crane while the last remaining piles were cut using a conventional wire saw setup. All cut concrete sections were loaded onto barges and transported to another location at the port, where they were processed and recycled.

“I had heard about the success Orion had with Accu-Cut and the company’s Stingray saw on the Bayway Bridge and other demolition projects in the Tampa Bay area, so when we were faced with the challenges this project presented, I was confident John and his crew had


Concrete flat saws were used to divide 18-inch-thick reinforced decks into sections for removal.



the experience and resources to overcome them,” said Cory Donoghue, project manager for Orion Marine Group. “The requirement to reemploy the existing piles, combined with the deteriorated condition of the existing structures, tight work zone, environmental concerns and our proximity to the active U.S.C.G. vessels were all factors that demanded the demolition be performed safely, precisely and efficiently. Thanks to Accu-Cut, we were able to do exactly that, allowing us to quickly follow up the concrete cutting with pile extraction on the finger piers and pile cap construction on the wharf.”

Between February and April 2014, the cutting contractor performed over 2,300 linear feet of flat sawing though 14-inch-thick reinforced concrete pier decks, cut 177 18-inch by 18-inch piles below the caps for reuse, made around 300 square feet of wire saw cuts and core drilled

Sentinel-Class Fast Response Cutters

The United States Coast Guard has a fleet of Fast Response Cutter (FRC) patrol boats, six of which are stationed in San Juan, Puerto Rico. The 154-foot vessels have a minimum top speed of 28 knots and replace the aging 110-foot Island-class patrol boats. They conduct missions that include port, waterway and coastal security; fishery patrols; search and rescue and national defense. Each FRC has a crew of 24 and has a range of 2,950 nautical miles. They are armed with a stabilized 25-millimeter machine gun mount and four crew-served .50-caliber machine guns. For more information, visit www.uscg.mil.

six holes through the pile caps measuring 6 inches in diameter and 3 feet deep. These holes were for rigging and lifting where there was not enough clearence around some cap sections on the main wharf.

To cut the deck sections, Accu-Cut used Core Cut 6566 and 3765 flat saws fitted with various blades up to 42 inches in diameter and powered by CB24 and CB35 hydraulic power units—all from CSDA member Diamond Products. A Hydrostress wire saw was used to cut the pile caps, while the contractor’s own Stingray saw cut the piles for reuse.

This was the first job the contractor had done outside the mainland U.S., so making sure all the right equipment was correctly shipped to Puerto Rico and maintaining continuous operation was a new take on a familiar challenge. In addition, changing weather conditions meant that

Cut sections weighed between 25,000 and 50,000 pounds.

Pile caps were cut free from their supporting structures using a wire saw. The contractor’s patented Stingray saw cut the piles to the required elevation.

Photo courtesy of the U.S. Coast Guard.

2 8 | DECEMBER.14



COMPANY PROFILE

Accu-Cut Concrete Services, Inc. has been a CSDA member for 12 years and was established in 1990. The company is based in Palm Harbor, Florida, has five trucks, 10 employees and offers the concrete cutting services of flat sawing, core drilling, wall sawing, wire sawing, hand sawing and grinding. Accu-Cut is a CSDA Certified Operator company.

RESOURCES

General Contractor CH2MHill / Orion Marine Group

Sawing and Drilling Contractor: Accu-Cut Concrete Services, Inc. Palm Harbor, Florida Phone: 727-787-4843 Email: [email protected]

Methods Used: Wire Sawing, Flat Sawing

the contractor had to deal with intermittent heavy rain several times each day, almost every day during the work. While these downpours would last for 10 to 15 minutes and caused somewhat of an inconvenience, a continuous 10 to 15 mph breeze presented a real challenge for the crane and barge operators. Standard items of personal protective equipment were provided for the work, including life jackets. During the project, the Occupational Safety & Health Administration inspected the jobsite and no citations were issued.

“The job went very well and the overall demolition of the wharf and piers was completed on time. We are currently working on an additional phase of this project, which was awarded to us after our success on the initial scope of work,” said Robinson. “It was a learning experience for us, both at the site and back in Florida. It was a logistical challenge regarding the whereabouts of key people and equipment, but our guys stepped up and did a great job,” he concluded.

Due for completion in early 2015, the U.S. Coast Guard Sector San Juan Cutter Homeport project will not only allow the station’s new vessels to securely dock, but it will also provide the Coast Guard with the opportunity to deport quickly when required—always ready.

Cut piles were to be reemployed in the construction of a new wharf and finger piers.


3 0 | DECEMBER.14

CORE HEALTH

Taste the Rainbow (of Power Foods)

By Erin O’Brien By Erin O’Brien

In the food world, color equals power, nutrients and energy. Different colored foods contain a variety of beneficial phytochemicals, which include vitamins,

minerals and antioxidants. All of these nutrients are beneficial and vital to a healthy body and can promote recovery from illness or injury and maximize performance on the jobsite. Many professional athletic teams hire team nutritionists to help optimize their team meals and concrete cutting, polishing and scanning professionals can do the same by remembering to “taste the rainbow.”

REDS

Apples are a great source of fiber, which aids digestion and a healthy gut. They also can protect your heart, improve lung capacity and cushion your joints. Eat the skin with the apple for the greatest benefits.

Watermelons aid in hydration and contain L-citrulline, a powerful antioxidant that can help wounds heal faster and help reduce muscle soreness.

Cherries are a natural anti-inflammatory and contain melatonin, which helps to promote sleep.

Chili peppers contain capsaicin, which can help boost metabolism. They also contain nutrients that can boost the immune system and fight cancer.

Strawberries help to protect your heart, fight cancer and some studies have shown that they contain a chemical that boosts memory.

Tomatoes contain lycopene, which helps to protect prostate health. They also contain nutrients that can help lower cholesterol and blood pressure.

ORANGES

Carrots are well-known for containing large amounts of beta-carotene, which is good for eye health, but they also contain Vitamin C which helps heal bruises more quickly.

Sweet potatoes also contain high amounts of Vitamin C and beta-carotene, as well as compounds that lower cholesterol and strengthen bones.

Oranges support the immune system, increase cardiovascular health and can protect against cancer.

Mangoes are full of nutrients that boost memory, aid digestion and protect against cancer.

YELLOWS

Pineapples are an excellent source of bromelain, which can help to heal bruises, as well as aid digestion and strengthen bones.

Lemons, and any other citrus fruit, help control blood pressure, boost the immune system and help to prevent cancer.

Bananas strengthen cardiovascular health and help to lower blood pressure.

GREENS

Leafy greens, including spinach, kale, bok choy and field greens, contain nitric oxide, which delays fatigue and improves circulation. They are high in a variety of vitamins and have properties that can lower blood pressure and fight cancer.

Broccoli is high in calcium, which strengthens bones. It is also good for eye and cardiovascular health.

Avocados are full of healthy fats that support cardiovascular health and help to lower blood sugar.

Artichokes, brussels sprouts and cabbage contain a phytochemical that supports liver function and protects against cancer.


BLUES/PURPLES

Berries such as blueberries, raspberries, blackberries and cranberries carry loads of antioxidants which help to fight cancer, improve cardiovascular health, lower blood pressure and improve memory. The deeper the color, the higher level of antioxidants the berry contains.

Beets contain similar levels of antioxidants to berries, and can also lower cholesterol, blood pressure and blood sugar.

Figs are rich in fiber, which promotes digestive health. They may also help to reduce blood pressure and lower cholesterol.

WHITES

White foods such as onions, garlic and ginger contain a compound called allicin, which improves immune function. Garlic has also been shown to improve cardiovascular health.

Other white foods with health benefits include cauliflower, mushrooms and fennel, which help to combat cancer, reduce inflammation and lower blood pressure and cholesterol.

BLACKS/BROWNS

Beans, nuts and seeds contain high levels of protein and fiber, which provide the body with energy and support cell repair and digestive health.

With the holidays in full swing, think about what colors are on your plate. Try to include a variety of colors instead of the standard meat, potatoes, gravy and stuffing, unless of course the stuffing is packed with vegetables. Adding colorful fruits and vegetables into your diet is an easy way to increase your nutrient intake and help to protect against a variety of diseases. There are delicious and healthy options all year long to add some color to your diet.

Erin O’Brien, MS, ATC is a Certified Athletic

Trainer and Marketing Director for O’Brien

International, the association management

company that manages the Concrete Sawing

& Drilling Association. O’Brien received her

Bachelor of Science degree in Athletic Training

from Ohio University and her Master of Science

degree in Applied Physiology and Kinesiology

from the University of Florida. She is also

a Certified Level 1 CrossFit Instructor and

member of CrossFit9 in St. Petersburg, FL. She

is a regular contributor to Concrete Openings

magazine. She can be reached at [email protected]

or 727-577-5002.

ATTEND

$15 FOR ‘15

3 2 | DECEMBER.14

The crack of the bat and the roar of the home crowd at Cooper Stadium may have faded, but soon the roar of engines and the smell of gasoline will fill the Columbus, Ohio venue. A $40-million project is underway to transform the former home of Minor League Baseball’s Columbus Clippers into a state-of-the-art racetrack and automotive research and training center. For three months this year, however, the only noises heard inside the stadium were made by a cutting contractor helping to remove approximately 6.75 million pounds of concrete.

Diamonds Key to Baseball Stadium Transformation

of Ingenuity

The former Cooper Stadium is being converted to SPARC Ohio, an automotive research and testing facility.



The 15,000-capacity Cooper Stadium was closed in 2008 and left vacant until this year, when work began to convert it into the 8,500-seater Sports Pavilion and Automotive Research Center (SPARC). The new center will include a half-mile paved oval track, a technology center, lodging facilities, a conference center and exhibition space. To realize this plan, the existing grandstands of the derelict stadium had to be renovated and structures like dugouts, seating areas, light poles, press boxes, roof coverings and steel supports had to be removed.

“Given the rich history of the stadium, it was exciting to be a part of the renovation process. Not only did we get to work on a historical venue, we also got to work on what will be a one-of-a-kind facility,” said Jason Young, operations manager for Donley Concrete Cutting Co. of Pickerington, Ohio. The local CSDA member was chosen by general contractor Loewendick Demolition Contractors, Inc. of Grove City, Ohio, for concrete sawing tasks in several parts of the stadium.

It was determined that concrete sawing with diamond tools was the only feasible option to safely separate the concrete grandstands. Once the specified sections were cut, traditional demolition tools like jackhammers and wrecking balls were used to break them down. The

precision and accuracy of the concrete sawing techniques meant the sections could be demolished in isolation without compromising the structural integrity of adjacent sections that were to remain. In addition, the method of sawing with diamond blades provided clean, finished edges that would benefit the construction of the new pavilion—not to mention the saws could be set up in areas with limited access that were unreachable by larger demolition equipment.

First, Donley Concrete Cutting set up on the 245-foot-long, 8-foot-wide and 12-inch-thick concrete landing slab and used a Diamond Products CC 6500 flat saw fitted with a 30-inch-diameter blade to make the cuts. The landing was divided into 12 sections that were broken out after cutting. Further cuts were required to separate the landing slab from the grandstands. For these areas, which could not be cut by the flat saw, a customized Husqvarna K2500 hydraulic hand saw was used to make flush cuts. Power came from a Diamond Products truck-mounted unit, which supplied 480-volt electric power to a CB40 EXL portable hydraulic power unit. This portion of the cutting work took around 14 hours to complete.

Concrete flat saws were used to cut the 12-inch-thick landing slab around the stadium’s grandstands.

3 4 | DECEMBER.14

Operators again utilized the flush cut hand saw, along with an ICS 890F4 chain saw, to cut along the perimeter of the upper grandstand mezzanine slab. These cuts separated the mezzanine slabs, walls and ramps in preparation for cutting the grandstand risers. Operators cut four separate areas of the grandstand mezzanine to an average depth of 6 inches. Some blades became stuck while cutting because of structural shifts, so shoring was placed below the cutting areas to eliminate these shifts.

Treads and risers were cut by an operator using a Diamond Products CC1600 wall saw capable of both regular and flush cutting capabilities. Cuts were made from the top to the bottom of each riser, which allowed the general contractor to demolish and remove the specified grandstand sections. The steps on the risers were 9 inches tall, 36 inches wide and 12 inches deep. The average thickness of the steps was 12 inches and there were around 30 steps per riser. Operators were able to cut the entire elevation of one riser in eight hours, making one continuous cut from top to bottom.

To complete the required cutting work, Donley Concrete Cutting operators returned to the lower grandstand areas and used the wall and chain saw to cut supporting concrete beams. These 36-inch-tall by 14-inch-thick beams supported the landing slab and could not be accessed until the general contractor broke out the cut slab sections. While cutting the slab, however, operators had layouts to identify where the beams were located and made deeper cuts to penetrate the top of the beam. This allowed the layout to be transferred after the slab sections had been removed and the beams were exposed. A total of 11 beams were cut, taking 12 hours to complete.

Originally built in 1931 just south of downtown Columbus, Ohio, Cooper Stadium was once the home of several baseball teams, including the Columbus Red Birds, the Columbus Blue Birds, the Columbus Jets and the Columbus Clippers. The latter was the minor league team for the Pittsburgh Pirates, New York Yankees, Washington Nationals and currently is linked with the Cleveland Indians. The stadium played host to many league and division title games played by some of baseballs finest players, including the recently-retired Derek Jeter. The former Yankees short-stop played 158 games with the Clippers between 1994 and 1995 before moving up to the big leagues, where he became a household name. The Columbus Clippers played their final game at Cooper Stadium on September 1, 2008 before moving to Huntington Park in downtown Columbus.

The 47-acre site, which was anchored by the 15,000 seat stadium, originally was constructed for $450,000. The $40-million renovation will reduce the capacity of the stadium to 8,500 around a newly-constructed half-mile racetrack. The overall site will include a 50,000-square-foot automotive research center as well as lodging facilities, a conference center and exhibition space. When complete, the venue will host such events as auto racing, motocross, cycling, auto shows as well as concerts and festivals. Along with a partnership with select businesses and educational institutions, the facility will also be used as a test site for automotive engineers and technicians as well as a venue for driver training, consumer education and sales.

Photos courtesy of SPARC Ohio.

Wall sawing techniques were used to cut treads and risers.



On the surface, the prospect of working in an open stadium structure would seem to be easier than other, less spacious jobsites, but the issue of stair-only access to both the upper and lower work areas did restrict the contractor in terms of sawing options. Also, ongoing demolition work being performed by other contractors during the cutting work presented further limitations. Portable hydraulic generators, water supplies and sawing equipment were all craned into each work area, allowing the majority of the work to be completed without the need for a truck.

Donley Concrete Cutting worked on the jobsite for two weeks to complete the necessary sawing required for the demolition work. The general contractor went on to remove 6,750,000 pounds of concrete and approximately 6,500 seats from the old stadium. The project was completed both on time and within the estimated budget.

“We were awarded the project based on our reputation to manage projects in a timely manner with highly trained operators. Completing jobs safely and within budget is always our priority, so this was no different,” explained Young.

At present, SPARC Ohio is due to open in 2015. The capabilities of concrete sawing equipment has provided the owners with a way to renovate and build around existing structures at the former Cooper Stadium, saving them both time and money.

COMPANY PROFILE

Donley Concrete Cutting Co. has been a CSDA member since 2004 and is based in Pickerington, Ohio, with a support location in Cincinnati. The company has been in business for 17 years. It has 50 employees, 40 trucks and offers the services of core drilling, wall sawing, wire sawing, flat sawing, curb sawing, diamond grooving and grinding, profilograph services, selective

demolition and ground penetrating radar.

RESOURCES

General Contractor Loewendick Demolition Contractors, Inc.

Sawing and Drilling Contractor: Donley Concrete Cutting Co. Pickerington, Ohio Phone: 614-834-0300 Email: [email protected] Website: www.donleyconcrete.com

Methods Used: Flat Sawing, Wall Sawing, Hand Sawing


Customized flush cut hand saws were used in areas where flat sawing equipment could not be placed.

Operators also cut support beams that were exposed after demolition of the slab.

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Copyright © 2014 Husqvarna AB (publ.). All rights reserved. Husqvarna is a registered trademark of Husqvarna AB (publ.).

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Everything you need in one package.Husqvarna's NEW WS 220 is the perfect all-in-one high frequency wall saw with high power and deep cutting. It's unbeatably efficient for smaller/mid-sized jobs with a cutting depth of up to 15" (390 mm). The saw is easy to use, and the saw head delivers a full 8 hp (6 kW) on the shaft, but weighs

only 42 lbs (19 kg). It's so flexible that you can even run it on 1-phase power, if needed. All of this comes in an extremely easy to maneuver package thanks to the included trolley. Want to know more? Visit www.husqvarnacp.com or call your Husqvarna representative today!


3 8 | DECEMBER.14

Happy New Year! – OSHA’s Revised Recordkeeping Rule Has Major Implications for Employers

SAFETY COUNTS

As many employers know all too well, the Occupational Safety and Health Administration (OSHA) requires the recording of

work-related injuries and illnesses and the maintenance of OSHA 300 Logs for five years. Moreover, OSHA requires all employers to report to OSHA certain serious injuries within a short time period. On September 11, 2014, OSHA announced its Final Rule revising the current recordkeeping standard, which will significantly expand the recordkeeping rule’s reach to hundreds of thousands of new employers and place further burdens on employers to report additional workplace injuries and illnesses. Since these new rules become effective on January 1, 2015, employers have little time to modify their practices and prepare for the coming wave of enforcement.

OSHA’S RECORDKEEPING REGULATIONS

Under OSHA’s recordkeeping regulations, 29 C.F.R. 1904, certain employers with more than 10 employees must record work-related injuries and maintain written records for five years. Those records include the 300 Log, the 301 form and the 300A annual summary. Though it may sound simple, recordkeeping is not an easy task. It involves numerous issues, including work-relatedness, the nature and scope of an injury or illness and the counting of employee days off from work or restricted duty. Many times, these issues involve analysis of incomplete or conflicting evidence. For instance, an employer may disagree with an employee’s claim that his or her injury or illness is work-related. In such circumstances, the employer must evaluate the employee’s claim to determine whether the injury or illness should be recorded on the OSHA 300 Log or should be found to be non-work-related. If

By Mark A. Lies II & Kerry M. Mohan

the employer finds that the injury is non-work-related, the employer will have to maintain documentation to support its determination in case OSHA were to challenge that decision.

THOUSANDS OF NEW EMPLOYERS ARE NOW SUBJECT TO OSHA’S RECORDKEEPING REQUIREMENT

Under OSHA’s current rule, employers with 10 or fewer employees are exempt from maintaining OSHA 300, 301 and 300A records, which track work-related injuries. The current rule also exempts thousands of employers based on their Standard Industrial Classification (SIC) codes. Under the new rule, the list of exempted employers will be based on North American Industry Classification System (NAICS) codes. As a result, many employers who were once exempted from OSHA’s recordkeeping requirements will now have to begin maintaining OSHA 300, 301 and

300A records. Some of the industries now covered by the recordkeeping rules include:• Bakeries and tortilla manufacturing plants • Automobile dealers• Automotive parts, accessories and

tire stores• Lessors of real estate• Facilities support services• Beer, wine and liquor stores• Commercial and industrial machinery and

equipment rental and leasing• Direct selling establishments• Performing arts companies• Museums, historical sites and

similar institutions• Amusement and recreation industries• Other personal services

The first question that comes to mind when seeing the list of industries now covered under the recordkeeping rule is,


“What is OSHA even talking about?” Thus, it is important that employers learn what their NAICS code is to determine if they are now covered by the recordkeeping rule. If so, the employer will then have to count its number of employees to see if it has 10 or fewer. There is information available from OSHA at www.osha.gov/recordkeeping2014 on how to conduct this assessment and also identify employers that are now subject to the rule.

In short, OSHA’s new rule will encompass hundreds of thousands of employers who never had to keep these records. Moreover, because of the January 1, 2015 implementation date, these employers must take prompt action to ensure that they are prepared to record injuries and illnesses in the future.

INCREASED REPORTING OF INJURIES AND INCIDENTS WILL LEAD TO INCREASED OSHA INSPECTIONS

Under the current rule, all employers are required to report to OSHA “[w]ithin eight (8) hours of the death of an employee from a work-related incident or the in-patient hospitalization of three or more employees as a result of a work-related incident.” 29 C.F.R. § 1904.39(a). This requirement applies to all employers, regardless if they have 10 or fewer employees and regardless of if they are exempt from maintaining recordkeeping logs.

Under the new standard, all employers are required to report to OSHA:• Within eight (8) hours after the death of

any employee as a result of a work-related incident; and

• Within twenty-four (24) hours after the in-patient hospitalization of one or more employees or an employee’s amputation or an employee’s loss of an eye, as a result of a work-related incident.20 C.F.R. § 1904.39(a) as amended. OSHA’s new reporting rule raises several

questions as to what it even means. For instance, what constitutes an amputation? Under the new rule, an amputation does not require bone loss. Thus, does the cutting-off of the very tip of a finger, no matter how small, constitute an amputation? Also, what constitutes the loss of an eye? Does it require an immediate incident resulting in the loss of an eye? The fact that these questions exist means that OSHA may have a different interpretation of the rule than the employer, which could result in a citation.

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Moreover, the new standard’s implications are significant. As you may expect, the reporting of a death or serious injury often leads to an OSHA inspection, which brings its own set of issues. Thus, by requiring employers to now report more injuries and illnesses, the number of OSHA inspections, and citations issued as a result, will certainly increase.

MULTI-EMPLOYER WORKSITES

As this rule unfolds, it will have implications relating to OSHA’s “multi-employer” worksite doctrine, which is applicable when there are multiple employers engaged in performing work at the same worksite.

Section 5(a) of the Occupational Safety and Health Act broadly requires employers to furnish each of its employees a workplace free from recognized hazards and to comply with all occupational safety and health standards developed by OSHA. Thus, the Act creates two types of obligations: 1) a “general duty” obligation running only to the employer’s own employees; and 2) an obligation to obey all OSHA standards with respect to all employees, regardless of their employer.

This second obligation formed the basis for OSHA’s “multi-employer worksite policy,” under which the Agency decided it had the authority to issue citations not only to employers who exposed their own employees to hazardous conditions, but also to employers who created a hazardous condition that endangered employees, whether its own or those of another employer. This policy gave OSHA the ability to issue citations to multiple employers even for violations that did not directly affect the employer’s own employees. This policy had particular importance in the construction industry, with many different employers having employees at a site at any given time.

Since the early 1980s, OSHA has continuously expanded the scope of its multi-employer worksite policy. Under OSHA’s current enforcement policy, compliance officers are instructed to issue citations to any employer who: • Exposed its own employees to a hazardous condition• Created a hazardous condition that endangered any

employer’s employees• Was responsible for correcting a hazardous condition even if its own

employees were not exposed to the hazard, or• Had the ability to control to prevent or abate a hazardous condition

through the exercise of reasonable supervisory authorityThis fourth category, the “controlling employer,” has historically

caused the most consternation among employers as well as courts. The new OSHA enforcement policy regarding reporting of injuries or illness and monitoring the OSHA 300 Log and related documents will raise numerous issues, for example:• Does the controlling employer at the worksite have OSHA liability if

another employer, such as a subcontractor or a temporary staffing service at the worksite fails to report an injury or illness involving the subcontractor’s or temporary staffing service’s employee to OSHA within the required time period?

• What obligation does the controlling employer have to inquire with other employers to determine whether a subcontractor or temporary staffing service had a reportable or recordable injury or illness, and whether the subcontractor or temporary staffing service complied with the rule?

• Who is responsible for maintaining the OSHA 300 Log at the worksite, since OSHA has specific rules regarding which employer(s) is/are required to maintain the Log if there are multiple employers at the worksite?

SAFETY COUNTS cont inued

INSPECTION PREPARATION

As many employers have learned who have been inspected by OSHA, there are respective rights of the employer, employees and OSHA during an OSHA inspection. Unfortunately, most employers are unaware of these respective rights, as well as their employees, and, therefore, may waive important rights regarding the scope of the inspection, what documents the agency is and is not entitled to and how to respond to requests for employee interviews. Since there will be many more inspections generated, it is critical in the next several months that employers train their supervisors and make employees aware of these rights.

TRAINING OF THE OSHA RECORDKEEPER

Because many thousands of new employers will now be responsible for maintaining the OSHA 300 Log, the training process must begin now so that the recordkeepers can begin to properly document recordable injuries and illnesses on the Log, as of January 1, 2015. The recordkeeper will need to learn the various categories of recordable injuries and illnesses, how to evaluate medical records to determine whether an incident is recordable and then become aware of how to insert the data into the correct categories in the Log. The learning curve will be steep since the Log must be completed for each recordable incident within seven calendar days of the employer becoming aware that there has been a recordable injury or illness.

RECOMMENDATIONS

In order to be prepared to meet these new compliance obligations, employers should consider the following:• Determine whether the employer is now subject to the

requirement to maintain the OSHA 300 Log, and if so, designate and train an employee who will be competent to perform this responsibility

• Conduct training for its recordkeeper or other responsible employee regarding the new requirements to report the expanded categories of reportable severe injuries and illnesses within 24 hours to OSHA

• Because there will be many more OSHA inspections due to the new reportable categories of severe injuries and illnesses, conduct training on the various rights and responsibilities of employers, employees and OSHA during an OSHA inspection so that these rights can be properly exercised to limit the scope of potential employer liability

Mark A. Lies, II, is a partner with the law firm of Seyfarth Shaw LLP

based in Chicago, Illinois. He specializes in occupational safety and

health and related employment law and civil litigation. Mark can be

reached at 312-460-5877 or [email protected].

Kerry M. Mohan is an associate with Seyfarth Shaw. His practice

focuses on occupational safety and health, traditional labor matters

and related employment law and civil litigation. Kerry can be reached

at 312-460-5659 or [email protected].


4 2 | DECEMBER.14

The Architect’s Viewpoint: Specifying the Right Floor—Part II

By Andy Bowman

POLISHED PERSPECTIVE

To make the right flooring system choices and get the best results from them, there are four key items to consider:• Selection of the appropriate

flooring system• Preparation of the concrete surface• Installation of the flooring system• Ongoing maintenance and protection of

the flooring system

Selecting the Appropriate Flooring System

There are four factors that have a bearing on any choice of flooring:• Performance needs• Aesthetics• Production scheduling• Total costEach choice has characteristics that will affect flooring system performance, eye appeal, timing and cost.

3. PRODUCTION SCHEDULING

The timing and scheduling of the installation can have an impact on a choice of flooring system. Some chemistries allow quick installation. Others require cure times of up to one week to achieve full chemical and mechanical resistance. Most seamless epoxy and urethane systems require the concrete to be at least 30 days old before installation because these products will not allow excess moisture to escape from the concrete. Therefore, it is important to consider the work schedules of existing operations and other trades during new construction.

4. TOTAL COST

Finally, once flooring system choices have been identified that come closest to meeting specifier needs, the selection will typically have to fall within a budget. However, cost considerations extend beyond the bill presented by the applicator. Downtime, the life cycle of the system selected and the quantity of necessary repair work are factors associated with the total cost of the flooring system. The warranty should also be considered when evaluating cost. If the system is properly selected for the application, the warranty should cover any unexpected situations.

FLOORING SYSTEM DESCRIPTIONS

After taking time to fully understand performance needs, the following descriptions can be used to insure the most appropriate system is selected.

Generally speaking, coating thickness, installation time, chemical resistance, thermal shock resistance, life expectancy and costs increase as one moves from concrete polishing to coatings, to slurries, to broadcast systems, to mortar systems and to epoxy terrazzo.

Part I of this article was published in the September 2014 issue. Please refer to this issue or visit www.concreteopenings.com to view online.

TO RECAP…

There are several types of flooring systems available, including epoxy terrazzo.


4 4 | DECEMBER.14

CONCRETE POLISHING

One type of industrial flooring system is to have no coating at all. Concrete polishing is a multi-step process of concrete grinding, applying a concrete densifier and concrete polishing to create a virtually impermeable surface. Prior to densification, concrete staining can be done to apply color to a concrete floor.

The finished process turns an ordinary concrete floor surface into one with multiple sheen choices and the ability to keep water and other contaminants from penetrating the surface. Furthermore, the floor surface will be more functional since the process also helps to minimize high spots and rough areas.

COATINGS

The simplest system is a coating. It is the most cost-effective system, and because it doesn’t require multiple passes to grind, densify and polish, it is typically the fastest to install. However, it will typically have the shortest useful life.

Decorative aggregates can’t be used in coating applications, so the appearance is limited to solid colors. Generally, the low film build of this coating provides poor chemical, impact and traffic resistance. Another important characteristic to remember, is that coatings do not hide imperfections in the substrate.

SLURRY AND BROADCAST SYSTEMS

A slurry system provides a thickness between 0.063 (1/16) and 0.125 (1/8) of an inch that holds up to most wheeled traffic and provides greater durability. However, it

takes longer to install than a coating and is more expensive. Slurries can incorporate an aggregate to provide anti-skid properties.

Broadcast systems have the same attributes as slurry systems but use clear resins and decorative aggregates like colored quartz. Incorporating aggregate in both systems provides an inexpensive way to build thickness and skid resistance.

MORTAR SYSTEMS

Mortar systems should be considered for applications that need the greatest chemical resistance, thermal shock resistance and heavy-duty traffic. Mortar systems are also the system of choice to repair badly spalled, uneven or sloped substrates. They generally are the most labor-intensive systems to install and require the greatest installer skill.

Decorative floor mortars have the same advantages as a solid color mortar but, once again, they use a clear resin with decorative aggregate. These decorative mortars take the greatest skill to install because they typically can’t be ground without altering the finished appearance.

EPOXY TERRAZZO SYSTEMS

Epoxy terrazzo is a top choice for areas that must accommodate heavy traffic, especially pedestrian, while still maintaining an attractive appearance. It will typically have a high up-front cost, but maintenance costs are so low that overall life-cycle costs are comparable to other flooring options. This system also has the most design versatility, as both the resin and the aggregate can be changed. When chemical resistance is an

important issue, granite aggregate should be selected instead of marble and Novolac epoxy instead of standard epoxy.

Each of these installation methods use a variety of chemistries. Each chemistry controls variables such as chemical resistance, adhesion, mechanical properties such as tensile and comprehensive strength, ability to withstand weather, shrinkage and speed of cure.

STATIC CONTROL FLOORING SYSTEMS

In many flooring system projects, there is a need for an anti-static environment. One example might be in the clean room of an electronics plant, where an electrostatic discharge (ESD) of only millivolts can damage sensitive microcircuits. Another example would be a situation where highly flammable gases or chemicals are present. In these cases, a simple discharge spark might cause a fire or explosion.

Today, there are many ESD products in use, such as air ionizers, tote boxes, special packaging, wrist straps, footwear, tablemats and floors. Most ESD control professionals agree that the first defense against ESD is to direct accumulated static charges away from humans, manufacturing equipment and products. This is usually done by grounding equipment and personnel, along with the use of static control floors. The easiest way to achieve localized protection of products in an assembly or manufacturing environment is to ground the work surface.

In many cases, personnel are grounded with a wrist strap connected to a ground. For people walking or working in a standing

POLISHED PERSPECTIVE cont inued


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position, however, this is not practical. In these circumstances, static control floors are the most effective approach to address an entire ESD-control system.

Static control floors are defined as flooring systems that can drain and/or dissipate static charges by:• Automatically grounding personnel, equipment or other objects in

contact with the floor surface • Controlling the generation and accumulation of static charges

There are two categories of static control floors based on their resistance to the movement of electrons across the material’s surfaces:1. Conductive floor has a resistance of 2.5 x 104-106 ohms per 3

feet. It can drain static charge dissipating a 5,000-volt charge to zero in 0.05 seconds.

2. Static dissipative floor has a resistance of 106-109 ohms per 3 feet. It adds no static electricity to the environment and drains off a 5,000-volt charge to zero in less than 0.2 seconds.

A conductive floor material, because it has low electrical resistance, allows electrons to flow easily across its surface or through its volume. If a charged conductive floor is grounded, or coupled to another conductive object such as a steel pipe or post that is grounded, the charge accumulated on the floor will be uniformly distributed throughout the floor and rapidly dissipated to ground. Conductive flooring prevents the build-up of a static charge, eliminating the potential of an ESD event.

With their unique advantages, resinous static control flooring systems are becoming more applicable in industries where electrostatic discharge is a critical concern. The following sections discuss the nature of these floors and their typical applications.

RESINOUS STATIC CONTROL FLOORS

Resinous static control floor systems typically consist of liquid resin, as a binder, conductive additives and other fillers or aggregates. There are no inherent conductive resins, without adding foreign conductive materials. Therefore, adding conductive additives into a resin base is still the sole approach to formulate static control resinous flooring.

As specified, there are two types of resinous static control floors: • A conductive floor with a resistance of 2.5 x 104-106 ohms• A static dissipative floor with a resistance of 106-109 ohms

The systems can also be categorized into a thin film coating at 5-20 mils, a self-leveling slurry system at 60-80 mils and a 0.188 (3/16) to 0.25 (1/4)-inch-thick trowel applied resurfacer. These flooring systems can be formulated in a different type of base resin, such as Bisphenol A and/or Bisphenol F epoxy resin, epoxy novolacs, acrylics, vinyl ester and urethanes.

A conductive floor has a much lower electrical resistance than a dissipative floor. It will carry the static charges to a ground quickly and efficiently as to prevent accidental discharge and ignition. However if the floor is too conductive, an operator on the floor can become too effectively grounded and will suffer electrical shock. In another case, frequent contact between tools and equipment, or dropping the tools on the floor, will cause spark and ignition. For those circumstances, a spark-proof conductive flooring system is highly recommended.

Dissipative flooring systems have greater resistance to electric current flow than conductive floorings. At a working environment dealing with high-test voltages, such as facilities where electronic components are manufactured or assembled, a dissipative floor should be installed so that the static charges can be gradually transferred to ground, protecting personnel from electrical shock while at the same time protecting sensitive electronic equipment. The following table gives a brief application guide of the static control floors.

Applications Flooring Systems

Munitions plants Spark-proof conductive

Storage silos Spark-proof conductive

Manufacturing processing with highly flammable or combustible liquid, gases or powder, such as petroleum, chemical and pharmaceutical industries

Spark-proof conductive

Other industrial facilities where spark may not be of concern but ESD needs to be prevented

Conductive

Electronics manufacturing, packaging, assembly and test areas Static dissipative

Electronics maintenance / repair shops Static dissipative or conductive

Data processing areas / computer facilities Static dissipative

Clean roomStatic dissipative System Selector Guide for Resinous Static Control Floors

After determining whether a conductive or dissipative system is required for the application, the typical flooring system selection process should be followed to address the remaining performance needs such as traffic, aesthetics, cost and production schedules.

All static control flooring systems must be connected to a permanent earth ground to achieve a condition known as an electrical equal-potential plane (EP) where all static charges can be dissipated in any direction. Concrete itself cannot become an EP because air voids, compositional variations, aggregates and other additives present in concrete all work against achieving uniform conductivity. Therefore, a static control floor must be connected to a true earth ground through direct, uninterrupted contact with properly prepared grounding points. Metal floor joints, metal equipment bases and steel posts or columns may be used if they have been tested to confirm permanent continuity with an earth ground. Generally, a minimum of one grounding point per every 1,000 square feet is sufficient for proper dissipation of static charges.

After installation, the floor must be properly maintained and standard operating procedures must include routine testing to insure personnel safety and minimized material loss liability.

TO BE CONTINUED…Read Part III of this article in the March 2015 issue of Concrete Openings.

Andy Bowman is the owner of Adaptive Concrete Innovations based in

Rose Bud, Arkansas. He has 14 years experience of concrete polishing,

is the chair of the CSDA Polishing Committee and the lead trainer of the

association’s Concrete Polishing training class. Bowman can be reached at

419-408-5906 or by email at [email protected].

POLISHED PERSPECTIVE cont inued


4 8 | DECEMBER.14

TECH TALK

Tech Talk is a regular feature of Concrete Openings magazine, focusing on equipment, maintenance and technical issues of interest to concrete cutting, polishing and imaging contractors. Readers wishing to have a particular subject addressed can call or email CSDA with their suggestions at 727-577-5004 or [email protected].

By Mike Orzechowski

Fine Dust and Slurry Vacuums

Fine dust and slurry vacuums are an important part of the engineering controls for reducing exposure to respirable silica dust in the cutting,

coring and grinding of concrete. These vacuums are commonplace in the industry, yet they are not always fully understood.

The two main methods used to control silica dust is by using water or a fine dust vacuum. If water is used as the primary dust control system, then concrete slurry is generated during the cutting, coring and grinding operation. The slurry vacuum is essentially a jobsite cleanup tool to collect slurry generated from cutting with water. The

water is the mechanism for controlling the dust. If a fine dust vacuum is used as the primary dust control system, then the vacuum filtration is the mechanism for capturing the respirable silica dust. Typically, filters have to be High Efficiency Particulate Air (HEPA) or near-HEPA standards for them to be truly considered a fine dust vacuum.

Vacuum performance is generally rated by two factors: cubic feet per minute (cfm) and inches of water. These two data points are measured at the extremes of the normal operation of the vacuum. The cfm is a measurement of the maximum free air flow through the vacuum with no resistance to the

flow. The inches of water is a measurement of the maximum sealed suction of the vacuum, which is when there is zero air flow. In essence, it is based on how many inches the vacuum can lift a column of water. It is sometimes referred to as the water lift.

Some vacuum motors are name-plated as a multistage motor. The additional stages are internal fans placed in series in the motor which maintains the same air flow but increases the suction (inches of water or water lift). If a vacuum system has multiple motors, then the additional motors are running parallel to increase the air flow (cfm) while maintaining the same lift as a single motor.


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There is a big difference between through-motors (sometimes called thru-flow motors) and bypass-motors. Through-motors use the air stream to cool the vacuum motor and are common in many shop and household vacuums. The bypass-motors are typically found in slurry/wet vacuums. The bypass-motor uses a separate fan to supply air to cool the motor with no air flow through the hose. It is interesting to note that fine dust vacuums typically use the same bypass-motors because the air stream of fine dust can blind the filters and reduce the cooling air flowing through the motor, much like water and slurry does.

High performance vacuum motors typically spin at high rotational velocities with tight tolerances. The dust and slurry generated by the cutting, coring and grinding of concrete is very abrasive and can damage the bearings. Many slurry vacuums have a float ball to keep the slurry out of the motors when the tank fills. However, the mist and foam from the slurry are also very abrasive and can get past the float ball, damaging the bearings. This can be seen by turning on a slurry vacuum that has had ample time to dry out. A puff of dust comes out of the exhaust port on the vacuum because of the dried slurry mist in the motor. Some manufacturers use a baffle or filter to reduce the abrasive mist and foam. Some contractors treat the water in the tank with a surfactant to reduce the abrasive foam from the concrete slurry.

Super Absorbent Polymers (SAPs) and Flocculants (flocs) are becoming more common in conjunction with slurry vacuums to manage the volume of slurry and provide additional options for disposing of the slurry. One example would be a contractor using a small slurry/wet vacuum to collect slurry, then wheeling it to a flatbed truck with 55-gallon drums and a drum top slurry vacuum. The slurry is transferred to the drums and then the contractor returns to collect more slurry with the small vacuum. The flocculent can be added to the slurry in the drums on the truck to separate the water from the slurry. For heavy high solids slurries, the slurry can either be treated directly with the SAP to dry it or additional water can be added to the drum to allow for the floc to mix with the slurry and properly settle the solids. Although adding water seems counterintuitive, the floc will usually settle out more solids from the slurry if able to mix properly—returning even more water than the amount added. The water can be siphoned off using the drum top vacuum and the slurry solids can be treated with the

SAP to dry out any remaining liquid in the slurry, creating solid waste.

Some slurry vacuums have an integral pump in the vacuum to pump out the tank, as the vacuum fills at the point where the slurry is generated. Some of these pumps have a manual on/off feature and some are automatic with a float switch. There is also a notable difference between dewatering pumps, that pump essentially clean liquids, and the trash pumps that can pump debris-rich liquids.

At first blush, the fine dust vacuums seem simple: a vacuum motor, HEPA filter and a hose. Unfortunately, fine dust vacuums are arguably much more complicated than slurry/wet vacuums. The filtration particle size target is 0.3 to 10 micrometers (microns). The human eye can see particles as small as 40 or 50 micrometers without optical assistance. Respirable particles less than 10 microns are light enough to remain suspended in the air stream. They can enter the lungs, past the cilia and mucous defense mechanisms, and are capable of penetrating deep into the alveoli. Dust particles in the range of 10 to about 100 microns are considered inhalable dust, which can enter the body but are large enough to be trapped by the nose, throat and upper respiratory tract. The danger is that if the filtration threshold of the vacuum is 10 microns, the dust exhausted out of the vacuum will contain dangerous particles that are invisible. Since the air looks clear, it might lead to workers removing respirators and other forms of protection.

HEPA filters meet specific criteria established by the United States Department of Energy (DOE). They are a throwaway, extended-media, dry type filter with a rigid casing enclosing the full depth of the pleats. The filter shall exhibit a minimum efficiency of 99.97% at a test aerosol diameter of 0.3 micrometers. Many vacuums claim to be near-HEPA filtration and are typically considered fine dust vacuums, provided the air exhausted from the vacuum is essentially the same as the true HEPA vacuums or equivalent to an N100 rating respirator. The European Union established a standard EN 1822:2009 to classify HEPA filter levels from E10 to U17. Some vacuums follow the European Standard and promote a HEPA class rating.

Fine dust vacuums should be considered as a complete system from the local exhaust ventilation (LEV), or collect point, to the filters and the exhaust out the back of the vacuum. The dust is generated by a grinding action and the LEV and suction need to overcome

5 0 | DECEMBER.14

TECH TALK cont inued

the kinetic energy of the dust particles to capture the dust. For shrouds with large openings, a dust skirt is often needed to increase the air velocity and overcome the kinetic energy of the individual particles. To accomplish this requires larger air flows. To create large air flows with a near-HEPA level of filtration requires a large amount of power. It is important to properly size the vacuum for the complete system.

One of the major considerations in fine dust vacuums is particle speed. Particles between 0.05 and 0.5 microns are considered MPPS, or most penetrating particle size, to embed deep in the filter media at higher particle velocities. A larger filter surface area equates to lower air and particle speeds through the filter. Many of the filters are pleated to increase the filter area. As particles are coated on the filters or deeply embedded in the filter media, the useable surface area of the filter is decreased. Therefore, air and particle speeds are increased and the filter can be damaged.

Many fine dust vacuums use a multistage filtration process, including cyclonic or inertial separation, to remove large particles from the airstream to settle in a collection drum or bag. For very fine particles that remain in the airstream, there is typically a series of filters like nylon, PTFE (Polyester), paper cellulose and cloth fiber. The final filters are HEPA, which are disposable filters and can be expensive, so it is important to clean the air prior to the final stage of the HEPA filter.

Near-HEPA filters can be cleaned during operation by several methods, including reverse air blast or mechanical shaking. Some of these methods, usually the reverse air blast, can be done automatically on specific cycles. The vacuum through the filter is suspended momentarily while a blast of air goes through the filter in the opposite direction to the normal flow. This releases any particles that are caked on the filter media. It is important that the

filters are rated for that blast overpressure. For mechanical shakers, the vacuum must also be suspended when the filters are cleaned. If not, the dust that falls from the filter is quickly sucked back up to the filter through the operation of the vacuum suction. Shut off the vacuum before shaking the filters clean so the dust can settle in the collection drum and not be immediately sucked back onto the filter.

Vacuums with manual cleaning systems are usually configured with a means of measuring the pressure differential across the filters, helping to identify when they need to be cleaned. One common method is a Magnehelic Gauge, which measures filter resistance. When the filter resistance is high, the filter is blinded by dust. When the filter resistance drops suddenly it is usually an indication of a leak in the filter.

Fine dust vacuums are usually dedicated to dry dust only. For some fine dust vacuums, using paper cellulose or cloth fiber filter media, the moisture in the morning dew or wet conditions on the jobsite can cake slurry on the filter media and, in some cases, permanently damage the filters.

Some fine dust vacuums use smaller hoses to increase the air speed velocity in the hose to keep the particles in suspension. Particles between 10 to 100 microns require air speeds of around 0.2 meters per second to prevent them settling in the hose, but for larger and heavier particles the air speed must

increase significantly. These smaller hoses have more air resistance than vacuums with larger hose diameters. Either way, the length of the hose should be reasonable for the jobsite conditions, taking into consideration the vacuum size, particle size range and the volume of dust. Longer hoses tend to settle dust in the hose. From time to time, the hose may need to be cleared.

It is important to note that fine dust vacuums can generate static electricity buildup. Many use antistatic hoses to minimize the charge buildup. If a vacuum has a problem building up a static electric charge, one fix is to dangle a small piece of sash chain that is grounded to the

vacuum body. This will release the charge to the earth ground, much like how ambulances have chains hanging from the vehicle axles.

Hoses are crush proof rated because the vacuum is drawing a negative pressure on the periphery of the hose. If the hose is damaged, be certain it is properly repaired to maintain the integrity of the vacuum.

Concrete dust is heavy. Exercise caution when disposing of the dust. Vacuums that have open drums should to be emptied such that dust overexposures are not realized when the bin is dumped. Some vacuums have bags to help contain dust for easier and cleaner disposal.

Finally, with fine dust or slurry vacuums, it is important to maintain the vacuum system, keep filters clean and ensure seals and gaskets are well maintained. If the motor is overheated or abrasive, slurry or dust can compromise the bearings and the motor can be damaged beyond repair.

Mike Orzechowski is the engineering

manager for equipment for CSDA member

DITEQ Corporation, based in Lenexa,

Kansas, and has been in the industry for 17

years. He is the chair of the CSDA Standards

& Specifications Committee, Finance

Committee and is also involved with other

committees within the association. Mike can

be reached at 866-688-1032 or by email at

[email protected].


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CSDA OPERATOR CERTIFICATION 2014A selection of photos from the association's concrete sawing and drilling certification courses, held November 10-15 in Clearwater, Florida. Congratulations to the graduates and thank you to Diamond Products, Expert Equipment Company, Husqvarna, ICS and Pentruder for the use of their tools and equipment. See page 64 for a full list of CSDA Certified Operator companies.

5 4 | DECEMBER.14

INDUSTRY BITS

Concut Introduces New Core Bit SeriesConcut, Inc. is pleased to introduce its new Z-Speed series of core bits. These professional grade bits are available in diameters ranging from 2 inches to 72 inches and have been designed for electric and hydraulic drilling. They feature ‘wavy’ tops that are designed to help the bit to break in quickly and their standard drilling depth is 14 inches, although custom sizes are also available. The Z-Speed Red bits are built with speed in mind—they work in both heavily reinforced and unreinforced concrete as well as in hard or soft aggregates. The Z-Speed Blue core bit is a versatile bit that is designed for optimal speed and life, which will cut in all aggregates and steel conditions. Concut also produces Z-Speed “light-set bits” that have fewer segments for improved speed. The bits have a 12-millimeter diamond depth and no pad, plus segments are sold separately for companies to do their own re-tipping.

For More InformationContact: Tom MonaghanTel: 800-243-5888Email: [email protected]

New Line of High Speed Blades Introduced by Diamond ProductsDiamond Products is pleased to announce its new line of H.D. Maxx enhanced Heavy Duty Orange high speed diamond blades. The Heavy Duty Orange MAXX line offers the same heavy duty quality as the rest of the Orange range, but with even longer life and faster cutting performance. Available in diameters from 10 inches to 20 inches, the new blades feature heat isolation slots in the segments that keep the blades cool during high speeds, extending cutting life. Angled gullets in the blade core provide even greater cooling. H.D. MAXX blades are offered with all the bonds of the previous Heavy Duty Orange high speed blades. The H7H blade is designed for reinforced concrete and hard materials, while the H8H is for general purpose cutting and the H10H is for asphalt, green concrete, brick and block. This new line of blades is available January 1, 2015.

For More InformationTel: 800-321-5336Web: www.diamondproducts.com

Brokk, Inc. to Feature Redesigned Brokk 400 at WOC 2015

Brokk, Inc. has upgraded its electric Brokk 400 remote-controlled demolition machine and the company will feature it at booth C4237 during World of Concrete in Las Vegas, February 3-6, 2015. The new Brokk 400 model features a bigger drive axis, rollers and sidetracks. It also has a larger undercarriage with new tracks that are 10 percent longer than its predecessor. This provides up to 60 percent greater stability when operating with heavier attachments. It can handle attachments up to 1,420 pounds and its hydraulic quick-hitch system eliminates the need for hard pinning. The Brokk 400 has a hitting power of 773 foot-pounds at the tip of the tool, weighs 11,240 pounds and measures 63 inches wide by 81 inches tall. It is powered by a 30-kilowatt electric motor for emissions-free operation in confined areas. The machine features a robust, three-part boom that can operate at angles of up to 30 degrees and reach 22 feet horizontally and 24 feet vertically. The boom also features a box-weld design that provides additional protection for cylinders and hoses.

For More InformationContact: Peter BigwoodTel: 413-537-5572Email: [email protected]


DITEQ Announces Partnership with NaceCareDITEQ Corporation of Lenexa, Kansas, recently announced a strategic partnership with NaceCare Solutions based in Toronto, Canada. DITEQ is now the master distributor for NaceCare products in the Continental U.S. dealer network. This new partnership provides the concrete sawing and drilling industry access to the Canadian company’s line of dust vacuums, wet vacuums, slurry collection units, floor scrubbers and electric burnishers.

For More InformationContact: Mike OrzechowskiTel: 866-688-1032Email: [email protected]

Husqvarna Introduces New Range of Grinding MachinesHusqvarna has revamped its lineup of small grinders and added the PG 450 for concrete grinding, coating removal, concrete repair and polishing. The 3-horsepower machine has a grinding width of 18 inches and the chassis/frame can be separated from the grinding head in less than 30 seconds. The grinder’s frame folds tightly to be wheeled and the handles on the grinding head allow it to be lifted and moved, allowing it to fit into the trunk of most vehicles. In addition, the handle bar on the frame adjusts for an ergonomic operating height. The PG 450 has a total weight of 240 pounds, has a grinding speed of 705 rpm and runs on single phase power. Its self-adjusting floating cover with brush list enables dust to be collected for a cleaner work environment. The new cover follows the surface of the floor and creates a tight seal for efficient dust management. The planetary drive on the PG 450 helps it produce a flatter surface and the machine can be used to create a HiPERFLOOR® polished concrete solution.

For More InformationContact: Cate StratemeierTel: 913-928-1442 Email: [email protected]

Economy Improving Slowly According to FMI Q3-2014 OutlookFails Management Institute (FMI), a leading provider of management consulting and investment banking* to the engineering and construction industry, released its Q3-2014 Construction Outlook in September. The forecast called for solid, slow growth. Contributing factors included relatively low energy prices, low inflation, unemployment holding around 6.2 percent and GDP slowly growing. Additionally, consumer confidence has begun to rise steadily, building permits and housing starts bounced back in July and banks are starting to lend again, that is, if the applicant has good credit and cash flow. Therefore, sectors such as power, conservation and development, as well as transportation, will continue to see growth ahead of GDP. However, water supply, sewage and waste disposal and highway and street construction will be weaker as government spending is not expected to pick up significantly in the near term. Additional select market predictions include:

Residential – Multifamily construction is still expected to grow at a healthy pace of 13 percent in 2015 after reaching a near-record pace in 2014. The inventory for new homes increased to six months in July, showing some weakness in sales, but housing starts in July were 21.7 percent above July 2013 levels.

Office – Dropping unemployment rates and rising GDP have provided a lift in the office forecast now expected to reach 8 percent growth in 2014 and grow an additional 7 percent in 2015. Large metropolitan areas like New York City will benefit the most, as vacancy rates drop to 10.6 percent compared with national vacancy rates hovering around the 16 to 17 percent range.

Manufacturing – Improvements in manufacturing construction have been a surprise to many as the sector has been riding a roller coaster since the recession. After a flat 2013, the forecast called for 2014 to end up at 6 percent, growing an additional 8 percent in 2015.

Transportation – Transportation construction also continues at a solid pace, with 7 percent growth in 2014.

*Investment banking services provided by FMI Capital Advisors, Inc., a registered broker-dealer and wholly owned subsidiary of FMI.

For More InformationContact: Sarah AvalloneTel: 919-785-9221Email: [email protected]

GDM Technologies Releases New Turbo HandsawThe new Handicut™ GT (geared turbine) air saw produces over 6.5 horsepower, which is more output than some other gas handsaws, but without the fumes. GDM’s lightweight saw is under 16 pounds, approximately half the weight of conventional vane motor saws and runs on “oil-free” clean air. GDM’s Handicut™ GT is suitable for demanding jobs like cutting reinforced concrete, block, brick or stone, can cut walls, floors or pipework and can be used inside or outside. The Handicut™ GT is designed for wet or dry cutting using high speed diamond blades. The turbine motor compresses clean air to produce 6.5 horsepower without the use of an oiler. The saw can be used flat, vertical or upside down without fumes, oil or spills.

For more information contactTel: 866-443-6729Email: [email protected]

5 6 | DECEMBER.14


CSDA 2015 Annual Meeting NoticeThe annual meeting of the members of the Concrete Sawing & Drilling Association will take place at 11:00 AM on Thursday, April 2, 2015 at the The Renaissance Vinoy in St. Petersburg, Florida, for the purpose of receiving reports, transacting business and electing officers and directors.

For more information, call the CSDA office at 727-577-5004 or email [email protected].

Hilti Launches Software for Use with Scanning ToolsThe Hilti X-Scan system PS 1000, used in conjunction with the new PROFIS PS 1000 Premium software, enhances the company’s product line for the nondestructive inspection of concrete and as-built checks. The premium package is designed for simple and reliable operation to find and mark drilling, coring or sawing locations. The system has been upgraded with a new “expert” mode that detects embedded objects at depths up to 18 inches depending on permittivity of concrete. The PROFIS PS 1000 Premium software package offers export functions to analyze the data in additional programs such as AutoCAD. These upgrades allow users to overlay scan data from three different sensors and view the information in a single output. The software package is a tool for “as built” checks and allows the user to label and scan positions and drill hole markers with building coordinates for accurate scan placement in design files, whether onsite or off. Plus, users can export scan data in various design formats like “DXF”, “COLLADA” and “X3D”, making the data available for popular design programs such as AutoCad, Trimble SketchUp, Hilti PROFIS Anchors and more.

For More InformationTel: 800-879-8000 (U.S.), 800-363-4458 (Canada)Web: www.us.hilti.com (U.S.), www.hilti.ca (Canada)

I N D U S T R Y B I T S

Stihl Introduces World’s First Lithium-Ion Powered Cut-off MachineStihl is pleased to introduce the TSA 230 Cutquik®, the world’s first battery-powered cut-off machine. With no exhaust emissions, the TSA 230 enables indoor cutting in enclosed spaces and other jobsites where users are not permitted to use traditional gasoline-powered cut-off machines. The TSA 230 has an onboard water connection and control for wet cutting and dust suppression. Dry cutting in dust-sensitive areas is aided by an available depth guide with vacuum adapter. Weighing 8.6 pounds, this new cut-off machine is fueled by a low-maintenance, brushless, commercial-grade high torque electric motor. It utilizes an advanced 36-volt lithium-ion battery system, eliminating the need for traditional fuel and limiting maintenance. The battery technology of the cut-off machine provides operators with up to 15 minutes of quality and high performance with no gradual drop in power. Recharging rates can be increased with an optional rapid charger unit.

For More Information Tel: 800-467-8445Web: www.stihlusa.com

Dixie Diamond Introduces The BossDixie Diamond Manufacturing is pleased to present The Boss, the company’s latest fast-cutting core bit. Available in sizes from 2 inches to 60 inches in diameter, the bit is compatible with all core drill motors. Its unique serrated design reduces friction, allowing more horsepower to reach the tip of the segment for faster cutting speed. The Boss has a bond that is suitable for use in river rock and quartz and is now in stock.

For More InformationContact: Sid KilgoreTel: 800-654-7224Email: [email protected]

5 8 | DECEMBER.14


STAYED IN AMERICA1-800-638-3326 • edcoinc.com • contrxsystems.com

Visit us online or callfor more information

VISIT US AT WOC February 3rd - 6thBOOTH NO. O30648

EVERYTHINGYOU NEEDTO KNOW ABOUTSURFACE PREPARATION,RESTORATION, PROFESSIONALSAWING EQUIPMENT ANDHAND HELD TOOLS

New HR4013C Rotary Hammer Released by MakitaMakita has expanded its lineup of concrete hammers with a new 1.56-inch rotary hammer that has 45 percent less vibration and 20 percent more impact energy than its predecessor. The new 11-amp HR4013C weighs 15.1 pounds, delivers 8.4 foot pounds of energy and is engineered with enhanced Anti-Vibration Technology (AVT®), a synchronized three-component system designed for reduced vibration. The result of the enhanced AVT® is a vibration rating of 5 meters per second squared. An air actuated counterbalance directs air pressure from the crank and barrel room into the counterbalance cylinders to move counterweight pistons in the opposite direction of the drive piston, reducing vibration. Vibration-absorbing housing features a spring-loaded main handle and upper housing that move independently of the motor and drive mechanism, engineered to isolate vibration away from the user. An integrated damper spring at the base of the impact bolt is engineered to absorb impact vibrations from the drill bit. The HR4013C offers 2-mode operation for “ chipping only” or “ hammering with rotation,” as well as 24 bit angle settings and a one-touch sliding chuck for quick bit changes.

For More InformationContact: Wayne Hart Tel: 714-522-8088, x4410Email: [email protected]

Multi-Head Floor Scabbler From CS UnitecCS Unitec’s Trelawny™ MHS5 concrete floor scabbler is a demolition tool designed for quick concrete removal. Five piston heads supply 6,500 total blows per minute and provide a cutting width of 11 inches. This heavy-duty, pneumatic, walk-behind scabbler consumes 80 cfm of air at 90 psi. The MHS5 includes an integrated dust shroud and vacuum port to reduce hazardous dust and maintain worksite cleanliness when connected to a dust collection vacuum. CS Unitec offers two models for leveling high spots, breaking down hard coatings prior to blast cleaning and texturing for sealant and overlay preparation. MHS5 Model 159.5050 is equipped with 5-point bush hammer heads for keying concrete and removing laitance without damaging the substrate below. Model 159.5075 employs 9-point bush hammer heads for creating excellent bond profiles for epoxies, urethanes and thin overlays. Both models feature large wheels for rough terrain and built-in dead man’s handle for operator safety.

For More InformationTel: 800-700-5919Email: [email protected]: www.csunitec.com



CONCRETE SAWING, DRILLING AND POLISHING CONTRACTORS

INSURANCE PROGRAM

National “A” Rated XV Insurance Program

In celebrating over 50 years of service, we are your dedicated

industry professionals!

We at Apollo General Insurance Agency have created a Commercial General Liability and BusinessAuto insurance program for specialized Concrete Sawing, Drilling and Polishing Contractors.

General Liability Base Limits:$1,000,000 Per Occurrence$2,000,000 General Aggregate$2,000,000 Products/Completed Ops

$1,000,000 Personal/Advertising Injury$100,000 Fire Legal Liability$5,000 Medical Payments

Business Automobile$1,000,000 Combined Single Limit

We also have available outside markets for Property, Equipment, Excess Liability (for larger risks)Contractors Pollution and Workers Compensation.

Our experienced, professional staff would like to provide you with more information about ourConcrete Sawing, Drilling and Polishing Program. For complete program details, please contactSandi Hoffman or Bob Elster. We also invite you to visit our website at www.apgen.com.

We look forward to hearing from you!

1-800-624-5829 www.apgen.com

Sandi Hoffman, Ext. 16 [email protected]

Bob Elster, Ext. 17 [email protected]

CONSTRUCTIONAMERICAS™

2015 EXPOSITIONMARCH 26-27MIAMI, FL

ConstructionAmericas.fiu.edu

CA_Ad.indd 1 10/31/14 2:34 PM

New Wall Saw Blade from K2 DiamondK2 Diamond introduces the Golden Eagle wall saw blade for the professional user. This new wall saw blade incorporates the company’s Matrix Technology™, designed to provide optimal cutting speed and long tool life. The Golden Eagle wall saw blade is offered in one fast cutting bond with two different segment widths of 0.187 and 0.243 inches. Blade diameters are available from 20 to 72 inches. Field product testing of the blade was performed on a wide variety of aggregates and different wall saw machine types across North America, from which the company has received positive feedback.

For More InformationContact: Mike NelsonTel: 800 539-6116Email: [email protected]

ATTEND

$15 FOR ‘15

6 0 | DECEMBER.14

New Director of Sales for StihlStihl Southeast, Inc., distributor of Stihl outdoor power equipment for Florida, Georgia, Alabama and portions of the Caribbean, has announced that Mark Bixler will be the company’s new director of sales beginning January 1, 2015. Bixler brings a wealth of sales and management experience to the position, currently serving as territory manager for Southeast Florida and the Caribbean Islands. He will oversee the Stihl Southeast sales team, replacing Ward Brooks, who announced his retirement effective December 31, 2014. In addition to his current role at Stihl Southeast, Bixler previously held sales and management positions with various security companies in South Florida, most recently with Stanley Convergent Security Solutions. He also served in the U.S. Navy for 14 years.

For More InformationContact: Bob Noble Tel: 407-240-7900Email: [email protected]

Bosch Introduces Pocket-Size Laser MeasureBosch is pleased to introduce the GLM 15, a pocket-size laser measure with one-button operation. The GLM 15 can calculate precise distances up to 50 feet and within 0.125 of an inch of accuracy. The device turns on and defaults to always-on measuring with one press of a button. The user can point the device to a target and with another click of the button record the measurement. When done, the button can be pressed and held to turn the device off. The pocket-size device has a square, flat design to make the product suitable for use on any surface and requires two AA batteries. Measurements start at the back of the tool for easy distance marking. The GLM 15 is available at authorized dealers nationwide.

For More InformationTel: 877-207-2499Web: www.boschtools.com

New K 970 Power Cutter Released by HusqvarnaHusqvarna is pleased to release its improved K 970 power cutter for heavier cutting of concrete and stone in alterations, renovations and new construction work. Available in 14- and 16-inch models, the 6.4-horsepower cutter has several improvements to its predecessor. A new cylinder design and carburetor increase the power cutter’s capacity. At the same time, a new cylinder and muffler, with integrated heat deflector, ensure optimal operating temperatures and make the machine less sensitive to variations in climate and fuel. The 14-inch model weighs just over 24 pounds without fuel or a blade attached. A new, lighter blade guard made of magnesium has been designed for the 14-inch model to provide better balance and stepless guard adjustment. The guard includes a reversible blade bushing, allowing operators to switch between blades with different center holes. The K 970’s progressive water valve allows exact adjustment of the water volume, reducing water consumption and slurry.


New Drop-In Anchors Introduced by HiltiThe new Hilti HDI+/HDI-L+ drop-in anchors are FM- and UL-approved. These 0.38-inch and 0.5-inch drop-in anchors are suitable for applications such as anchoring sprinkler, HVAC, plumbing, electrical elements and suspended interior finishing elements. The HDI+/HDI-L+ drop-in anchors have been redesigned with a new stepped plug, which requires less impact energy to fully set the anchor. This reduction allows the HDI+/HDI-L+ to be installed with Hilti cordless rotary hammers and an automatic setting tool with integrated stop bit. This eliminates the need for hand setting tools and overhead hammering. When volume is a factor, the HDV drop-in anchor is designed for conventional installation. The HDV can be used with the standard Hilti hand setting tool and hammer. Contractors can download the Hilti Anchor Selector App (in the U.S.; www.us.hilti.com/apps, in Canada; www.hilti.ca/apps) to select the correct Hilti anchor typically used for any given application.

For More InformationTel: 800-879-8000 (U.S.), 800-363-4458 (Canada)Web: www.us.hilti.com (U.S.), www.hilti.ca (Canada)

Bixler



FAST CUTTING, that is!... You’re bleeding money because slow cutting speeds are driving payroll through the roof. You need diamond blades that will cut fast and lower your labor costs.

That’s why more contractors are turning to Diamond Tools Technology.

Our diamond tools are crafted by a seasoned team of metallurgists that work in a state-of-the-art facility. Each formulation is the culmination of decades of in-fi eld testing and experience - designed to deliver fast cutting speeds to improve your bottom line.

When it came time to remove a runway at a major East Coast airport, we went toe-to-toe with the best of the best, and WON!

The next time you need to reduce labor costs, think about calling DTT at (877) 345-6388

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6 2 | DECEMBER.14


K2 Introduces New Diamond Core BitsK2 Diamond is happy to introduce its new line of Razor Cut diamond core bits. These new core drill bits are offered in sizes from 2 inches in diameter and larger. Razor Cut core bits can be supplied with open back, solid back or ultra lightweight spider back tube designs. Their unique segment design gives these new core bits their name. Delivered from K2’s Matrix Technology™, Razor Cut core bits are designed for fast drilling speed and long tool life.

For More InformationContact: Mike NelsonTel: 800 539-6116Email: [email protected]

Makita Unveils AVT® Demolition HammerThe 17-pound Makita HM1111C demolition hammer has been designed to deliver compact power with less vibration and a range of performance features for chipping and demolition applications. The HM1111C is powered by a 14-amp motor with 12.7 foot pounds of impact energy. It incorporates the company’s exclusive Anti-Vibration Technology (AVT®), an internal counterbalance system engineered to reduce vibration for user comfort. Makita offers an AVT® solution in every major hammer class, from 1-inch rotary hammers to 70-pound breaker hammers. Additional features include variable speed control, soft start, constant speed control and L.E.D. indicators for service and power alerts. It is suitable for a range of chipping applications including removing excess concrete from over-pour, pulling up laminate flooring and tiles, chipping through-wall penetrations and digging out hard dirt for landscaping/hardscaping.

For More InformationContact: Wayne Hart Tel: 714-522-8088, x4410Email: [email protected]

DITEQ Appoints New Field Sales ManagerDITEQ Corporation is pleased to announce a new appointment to the company’s sales team. Billy Tucker assumes the role of field sales manager and will cover Mississippi, western Tennessee (Nashville and west) and Alabama. Tucker lives in northern Mississippi and is a graduate of Mississippi State University.

For More InformationContact: Joann MillerTel: 866-688-1032Email: [email protected]

Tucker

www.gdmsaws.com | 866-443-6729

think green, think power, think gdm

The Power of a Hydraulic Saw with the Clean Ease of an Air Saw

• DualStageTurbineCompressorhasGreaterEfficiency

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• Producesupto25HP(125lbs.)Torque• NoOilerNeeded-JustCleanAirPower• 50%QuieterthanVaneMotors

GT TURBO AIR WALL SAWThe Power of a Hydraulic Saw with the Clean Ease of an Air Saw

GDM Technologies is an American company. All products are made in the U.S.A.

GDM-halfpg-ConConst.indd 1 1/14/13 10:04 AM



Bosch Expands Heated Jacket Line with Women’s CollectionThe new PSJ120 women’s heated jacket from Bosch is the company’s first extension of its heated jacket collection. The women’s heated jacket offers tailored-fit features and is powered by a Bosch 12-volt Max lithium-ion battery connected to the BHB120 battery holster. The battery not only powers the jacket, but also provides USB-compatible cell phones and other electronic devices with an outlet to charge them. The PSJ120 features three quick warming core heat zones—two chest and one back—that start warming in minutes and provide up to six hours of heated runtime on low heat level with a 2.0 ampere hour 12-volt Max battery. The jacket’s shell and inner lining is made of a water- and wind-resistant polyester, while reflective features increase visibility day and night. Five pockets include one BHB120 storage pocket, two hand pockets, one cell phone chest pocket and one large inner document pocket. The PSJ120 is available in sizes small to extra-large for women and up to 3XL for men.

For More InformationTel: 877-207-2499Web: www.boschtools.com

ASCC Past President Receives Lifetime Achievement AwardDennis C. Ahal, past president of the American Society of Concrete Contractors (ASCC), received a Lifetime Achievement Award on September 18, 2014 at the organization’s Annual Conference in Denver, Colorado. The Lifetime Achievement Award is ASCC’s highest honor, acknowledging recipients for their body of work within the industry and their service to ASCC. Ahal was president of ASCC from 1997 to 1998 and has also served on the American Concrete Institute’s (ACI) Board of Directors. ACI awarded him the Roger Corbetta Concrete Contractor Award in 2005, and he was named an ACI fellow in 2007. Ahal has spoken to local and national audiences at large events, including World of Concrete, and is now retired after owning and managing Ahal Contracting Co., of St. Louis, Missouri, for many years.

For More InformationContact: Beverly A. GarnantTel: 314-962-0210Email: [email protected]

Husqvarna Appoints New District ManagersHusqvarna Construction Products is pleased to announce the appointment of two new district managers for distribution sales. Jason Lavrinc joins Husqvarna as a district manager for distribution sales in Pennsylvania and West Virginia. Jason has general construction experience and for the past 10 years serviced and sold insurance in the Pittsburgh area. Lee Watson joins the company as a district manager for distribution sales for the South, territory of Virginia and Washington, D.C. Lee has worked in the distribution field, selling construction materials and equipment for over 15 years. He worked his way through this business in inside sales, account management, branch management and sales management for regional and national construction material firms. Simultaneously, he earned his undergraduate degree in marketing and his MBA.


Retiring TCA Executive Director to be Honored at Jubilee EventThe Tilt-Up Concrete Association (TCA) will be honoring Ed Sauter, the association’s longstanding executive director, at the Winter Tilt-Up Jubilee during World of Concrete (WOC). Sauter will enter part-time retirement at the end of 2014 and step down as TCA executive director. He began his tenure at the association in 1992, when he agreed to take over as interim director and continued in the position for 23 years. In 2001, Sauter began expanding the TCA staff, going into partnership with Jim Baty, TCA’s technical director. Mitch Bloomquist, managing director, was brought on board in 2010 to provide an even stronger focus on membership benefits and the association’s brand image. The inaugural Winter Tilt-Up Jubilee was held earlier this year at WOC and the 2015 event will be held February 4 at the Las Vegas Hotel (LVH). A brief annual meeting will precede the event and attendees are asked to register via www.tilt-up.org/events. The Jubilee is sponsored by the TCA Global Associates Council, a representative body of the TCA Global Associate membership.

For More InformationContact: Kristin DispenzaTel: 740-249-4056Email: [email protected]

Lavrinc

Watson

Sauter

Ahal

6 4 | DECEMBER.14

CERTIFICATION

ABC CUTTING CONTRACTORS BIRMINGHAMBessemer, Alabama

ABC CUTTING CONTRACTORS MOBILEDaphine, Alabama

ACCU-CUT CONCRETE SERVICESPalm Harbor, Florida

AGGREGATE TECHNOLOGIESHouston, Texas

AMERICAN EAGLE CONCRETE SERVICESOrlando, Florida

ANDERS CONSTRUCTION, INC.Harvey, Louisiana

ATLANTIC CONCRETE CUTTING, INC.Mt. Holly, New Jersey

AUSTIN ENTERPRISEBakersfield, California

B.T. RENTALS LIMITEDWoodbrook, Trinidad & Tobago

CENTRAL CONCRETE CUTTING, INC.Edgar, Wisconsin

CHICAGO CUT CONCRETE CUTTINGChicago, Illinois

COBRA CONCRETE CUTTING SERVICES CO.Arlington Heights, Illinois

CONCRETE CUTTING & BREAKING CO.Jacksonville, Florida

CONCRETE CUTTING SPECIALISTS, INC.Freeland, Michigan

CONCRETE PENETRATING CO.Dallas, Texas

CONCRETE RENOVATION, INC.San Antonio, Texas

CONSTRUCTION DEBRIS REMOVAL, INC.St. Augustine, Florida

CORE SOLUTIONS LTD.Maraval, Trinidad & Tobago

CORING & CUTTING OF SPRINGFIELD, INC.Nixa, Missouri

CORING & CUTTING SERVICES, INC.Bentonville, Arkansas

CORING & CUTTING SERVICES, INC.Jacksonville, Arkansas

CR MEYEROshkosh, Wisconsin

CUT-RITE CONCRETE CUTTING CORP.Pawtucket, Rhode Island

CUTTING EDGE SERVICES CORP.Batavia, Ohio

D.M. CONLON/DAN-KEL CONCRETE CORING, SAWING & SCANNINGMyrtle Beach, South Carolina

DARI CONCRETE SAWING AND DRILLINGRaleigh, North Carolina

DEANDREA CORING & SAWING, INC.Henderson, Colorado

DELTA CONTRACTORS & ASSOCIATES, LLCBaltimore, Maryland

DIXIE CONCRETE CUTTING CO.College Park, Georgia

EAST COAST CONCRETE SPECIALITIES, INC.Jessup, Maryland

ELMER’S CRANE & DOZER, INC.Traverse City, Michigan

HAFNER & SON, INC.Danielsville, Pennsylvania

HARD ROCK CONCRETE CUTTERS, INC.Wheeling, Illinois

HARD ROCK SAWING & DRILLING SPECIALIST CO.Keshena, Wisconsin

HOLES INCORPORATEDHouston, Texas

HOLES OF SAN ANTONIO, INC.San Antonio, Texas

OPERATOR CERTIFICATIONCSDA’s Operator Certification is a comprehensive six-day program that combines detailed classroom instruction with on-slab demonstration and evaluation of advanced concrete cutting techniques. Safety, proper equipment use and efficiency are emphasized. CSDA certified operators are recognized industry-wide for their proficiency in the full range of sawing and drilling applications.

MINIMUM REQUIREMENTS• Successful completion of CSDA Cutting Edge, Slab Sawing & Drilling 101,

Wall Sawing 101 or Wire Sawing 101

• Three years field experience (4,500 hours)

• Successful completion of 10-hour OSHA Construction Safety course

• No more than one lost-time injury within the last three years

• Unrestricted driver’s license

• Negative drug test within 30 days of taking the course

HOUSLEY DEMOLITION CO., INC.Visalia, California

INTERNATIONAL DRILLING & SAWING, INC.Montgomery, Alabama

J-RAY CONTRACTORS, LLCMarrero, Louisiana

JACK DOHERTY CONTRACTINGWoburn, Massachussetts

K.C. CORING & CUTTING CONSTRUCTION, INC.Kansas City, Missouri

L&S FORMLESS CURB COMPANYHanover, Pennsylvania

LIUNA LOCAL 506 TRAINING CENTRERichmond Hill, Ontario, Canada

LOMBARDO DIAMOND CORE DRILLING CO.Santa Clara, California

M6 CONCRETE CUTTING & CORINGWichita, Kansas

PENHALL COMPANY/CONCRETE CORING COMPANY OF HAWAIIAiea, Hawaii

QUICK CUTS CONCRETE CUTTING SERVICES, LLCBelvidere, Illinois

ROUGHNECK CONCRETE DRILLING & SAWINGMorton Grove, Illinois

SUPER CITY CONCRETE CUTTINGOcean Grove, Victoria, Australia

TRUE LINE CORING & CUTTING OF CHATTANOOGA, LLCChattanooga, Tennessee

TRUE LINE CORING & CUTTING OF KNOXVILLE, LLCKnoxville, Tennessee

TRUE LINE CORING & CUTTING OF NASHVILLE, LLCNashville, Tennessee

WOLF INDUSTRIAL SERVICESSan Francisco, California


ATLANTIC CONCRETE CUTTING, INC.Mount Holly, New Jersey

AUSTIN ENTERPRISEBakersfield, California

CENTRAL CONCRETE CUTTING, INC.Edgar, Wisconsin

COBRA CONCRETE CUTTING SERVICES CO.Arlington Heights, Illinois

CONCRETE RENOVATION, INC.San Antonio, Texas

CUTTING EDGE SERVICES CORP.Batavia, Ohio

DEANDREA CORING & SAWING, INC.Henderson, Colorado

DI-TECH INTERNATIONAL, INC.Winnipeg, Manitoba, Canada

GREENE’S, INC.Woods Cross, Utah

HARD ROCK CONCRETE CUTTERS, INC.Wheeling, Illinois

HOLES INCORPORATEDHouston, Texas

ONLINE CONCRETE CUTTING SERVICES PTY. LTDSeven Hills, New South Wales, Australia

WESTCOAST CUTTING & CORING, LTD.Coquitlam, British Columbia, Canada

COMPANY CERTIFICATIONThe CSDA Company Certification Program is the first of its kind in the industry. This program has been created for cutting contractors to provide owners, architects, engineers, general contractors and government officials with a valuable pre-qualification tool that acknowledges sound business practices. It is available to all sawing and drilling contractors.

A COMPANY MUST MEET THE FOLLOWING CRITERIA TO ACHIEVE CERTIFICATION:• Meet the basic safety, and insurance requirements of the industry

• Undertake sound operational and financial best practices

• Provide evidence it has took part in basic training or certification programs to better its employees and the company as a whole

• Successfully pass a written application review

6 6 | DECEMBER.14

B E N E F I T SM E M B E R

NEW M

EM

BE

RS

MEMBERSHIP

SAFETY RESOURCES AND TOOLBOX SAFETY TIPS (TSTS)• 230-page CSDA Safety Manual,

• Safety Handbook in English/Spanish

• Safety Videos for concrete cutters

• Over 100 Toolbox Safety Tips (TSTs)

NE

TW

OR

KIN

G

NEXT GEN CSDA NEXT GENERATION GROUPThe group aims to continue the growth of the association while serving the needs and wants of the younger generation, with the goal of continuing to set a standard of excellence.

DISCOUNT

PROGRAMS

The Association negotiates member

benefit programs with national

vendors like Staples, UPS and

V-beltsupply.com in order to provide

cost-savings opportunities

for CSDA Members.

AT THE ANNUAL CONVENTION AND QUARTERLY MEETINGSThe number one benefit for members has always been the opportunity to network with cutting professionals at the annual convention and quarterly meetings. This networking provides opportunities to forge new relationships and learn from other experienced professionals.

North American Contractors

ADAM’S CONCRETE CUTTING & DEMOLITION, LLCGlendale, Arizona

ADVANCE CONCRETE LLCGreenville, North Carolina

AMERICAN EAGLE CONCRETE SERVICESOrlando, Florida

CUTTING EDGE LLCDenver, Colorado

VOLCANO CONSTRUCTION SERVICES LTD.Dartmouth, Nova Scotia, Canada

Overseas Contractor

CHASE+DRILL+SAW LTD.Muscat, Oman

Manufacturer

AMERIPOLISH, INC.Lowell, Arizona

Affiliate

ALLEGIANT PARTNERS, INC.Bend, Oregon


TESTIMONIAL Since I started in the concrete cutting business, I have had the drive to be successful. I have been in the industry for many years now and I am pleased to be the Vice-President, Field Operations for a company that believes in continuing education—for myself and my co-workers. This was one of the leading reasons why Chicago Cut Concrete Cutting became a member of CSDA. I knew when we set up the business, a key ingredient to our success and growth strategy would be to get involved with this association. We realized that for us to be an elite cutting company, we would need the guidance and programs that CSDA has to offer. Everyone at Chicago Cut has benefitted from safety resources like the Toolbox Safety Tips, while some of our experienced employees have been through the CSDA Operator Certification program. Our President, Tiffany Phillips, has assured our growing company that we will continue to follow the CSDA path to keep us on the cutting edge of our industry and ahead of the competition. When you see a Chicago Cut truck driving down the street, look for the CSDA member sticker that we display proudly.

Bob Hopkins Chicago Cut Concrete CuttingChicago, [email protected]

THE CSDA WEBSITE AT WWW.CSDA.ORG CONTAINS A WEALTH OF INFORMATION AVAILABLE 24/7 IN THE “MEMBERS” SECTION. IN ADDITION, CSDA’S FACEBOOK PAGE AND DISCUSSION FORUM GROUP PAGE ALSO PROVIDE MEMBERS WITH A CHANCE TO DISCUSS TECHNICAL ISSUES, SELL EQUIPMENT, HIRE EMPLOYEES OR ANY OTHER RELEVANT TOPICS.

24/7

REPRESENTATION WITH GOVERNMENTAL ORGANIZATIONSCSDA HAS WORKED WITH OSHA TO ADVANCE THE SAFETY OF CUTTING CONTRACTORS. THIS PARTNERSHIP INCLUDED ISSUING BEST PRACTICE AND TOOLBOX SAFETY TALK DOCUMENTS, JOINT EXHIBITIONS AT TRADE SHOWS, REVIEW OF SAFETY MATERIALS AND ROUNDTABLES.

DUESSCHEDULE GROSS SALES NORTH AMERICAN POLISHING GPR IMAGING MANUFACTURER DISTRIBUTOR OVERSEAS AFFILIATE CONTRACTOR CONTRACTOR CONTRACTOR CONTRACTOR

$0–1M $585 $750 $1,255 $910

$1–2M $950 $1,550 $1,160

$2–3M $1,445 $2,290 $1,720

$3M–5M $1,950 $1,250 $750

$3,690 $400

$725

$5–10M $2,450 $4,975 $2,775

>$10M $3,095 $6,175

REGISTER ONLINE AT WWW.CSDA.ORG

For more information about CSDA membership, visit www.csda.org, call 727-577-5004 or email [email protected].

6 8 | DECEMBER.14

CALENDAR

2015

FEBRUARY 2-3CSDA Estimating ClassLas Vegas Convention CenterLas Vegas, NVTel: 727-577-5004Email: [email protected]

FEBRUARY 3-6World of ConcreteLas Vegas Convention CenterLas Vegas, NVTel: 972-536-6423www.worldofconcrete.com

FEBRUARY 4CSDA Board MeetingLas Vegas Convention CenterLas Vegas, NVTel: 727-577-5004Email: [email protected]

FEBRUARY 4CSDA Next Generation ReceptionLas Vegas Convention CenterLas Vegas, NVTel: 727-577-5004Email: [email protected]

FEBRUARY 4-5CSDA Concrete Polishing ClassRenaissance Las Vegas HotelLas Vegas, NVTel: 727-577-5004Email: [email protected]

FEBRUARY 4-5CSDA Hand Sawing & Drilling 101 TrainingLas Vegas Convention CenterLas Vegas, NVTel: 727-577-5004Email: [email protected]

FEBRUARY 25-26UK Concrete ShowNational Exhibition Center, Hall 5Birmingham, United KingdomTel: 44-203 9296Email: [email protected]

MARCH 9-112015 Design-Build In TransportationHenry B. Gonzalez Convention CenterSan Antonio, TXTel: 301-270-3171Email: [email protected]

APRIL 22-25IACDS Annual General MeetingParis, FranceEmail: [email protected]

JUNE 4-5CSDA Summer MeetingsSheraton Kansas City HotelKansas City, MOTel: 727-577-5004Email: [email protected]

SEPTEMBER 10-11CSDA Fall MeetingsDenver Marriott City CenterDenver, COTel: 727-577-5004Email: [email protected]

OCTOBER 14-15Offsite Construction ShowExCelLondon, United KingdomTel: 44-203 9296Email: [email protected]

NOVEMBER 2-6Batimat 2015Paris Nord Villepinte Exhibition Centre Paris, France Email: [email protected] www.batimat.com

MARCH 11-132015 Design-Build for Water/WastewaterHenry B. Gonzalez Convention CenterSan Antonio, TXTel: 301-270-3171Email: [email protected]

MARCH 26-27Construction Americas 2015U.S. Century Bank ArenaMiami, FLTel: 305-348-3517Email: deborah@constructionmarketingassociation.orgwww.constructionamericas.fiu.edu

MARCH 30CSDA Spring MeetingsThe Renaissance Vinoy St. Petersburg ResortSt. Petersburg, FLTel: 727-577-5004Email: [email protected]

MARCH 31-APRIL 2CSDA Convention & Tech FairThe Renaissance Vinoy St. Petersburg ResortSt. Petersburg, FLTel: 727-577-5004Email: [email protected]

APRIL 20-25World of Concrete EuropeParis Nord Villepinte Exhibition Centre Paris, France www.intermatconstruction.com

CSDA Convention & Tech Fair St. Petersburg, Florida


CSDA Social MediaCSDA’s social media pages are packed with all the latest news, updates, photos and videos from the association and Concrete Openings magazine. Look out for exclusive content and become “friends” with others who are looking to network and promote the sawing and drilling industry. Join our growing fan base and stay in touch with the association through your PC, laptop or mobile device. Find direct links to these pages at www.csda.org.

Not a Subscriber?Get your free subscription today!Visit www.concreteopenings.com and click “subscribe.”

Target the Specialized Industry of Concrete Cutting, Polishing and Imaging Advertising in Concrete Openings magazine is the only way to reach the specialty market of cutting, polishing and imaging contractors who work with concrete, asphalt or masonry because it is specifically targeted to this segment of the industry.

How Do You Reach 18,000+ Concrete industry Professionals?Each issue of Concrete Openings magazine is sent to more than 11,000 operators, equipment manufacturers and suppliers in the concrete cutting, polishing and imaging industry, and more than 7,000 specifiers of these services around the world.

Who Reads the Magazine?Concrete Openings reaches cutting, polishing and imaging contractors as well as specifiers of these services, including engineers, architects, general contractors and governmental agencies. Why waste your message on unnecessary circulation? Advertising in Concrete Openings guarantees a targeted audience of industry professionals.

READERSHIP BY PROFESSION

• Specifiers

• Contractors

• Manufacturers, Distributors

52%

8%

40%

ADVERTISING AND READERSHIP

Circulation 18,000+ minimum, per issue

11,000+ member and prospective member companies made up of contractors, manufacturers, distributors and affiliates

7,000+ general contractors, engineers, architects and government officials who specify cutting, polishing and imaging

Concrete Openings WebsiteConcrete Openings has its own website. Advertisers have direct links to their websites placed on our Advertisers page as a complimentary addition to ad placement. A full page-turning copy of the magazine, including ads, is also available for visitors to read on the website. Visitors to the site can now access our advertisers at the touch of a button. The Concrete Openings Website also has banner advertising opportunities available throughout the year.

Visit www.concreteopenings.com for more information.

Readership Per IssueA poll of Concrete Openings subscribers revealed that 66% pass on their copy of the magazine to at least one other person, with almost 25% stating that the magazine is passed on to four or more people each issue. This translates to an average of four people reading each issue of the magazine for a total readership per year of approximately 60,000.

http://www.concreteopenings.com

7 0 | DECEMBER.14

To receive additional information about products advertised in this issue, visit the advertisers page on concreteopenings.com, or contact the vendors below.

ADVERTISERS

CUTTER’S CORNERThis classified section is for use by anyone who wants to sell or buy used equipment, post help wanted ads or advertise business opportunities. Anyone interested in placing ads should send copy to Concrete Openings Classifieds, 100 2nd Ave S, Ste 402N St. Petersburg, FL 33701. Copy can also be faxed to 727-577-5012 or emailed to [email protected]. Cost: $100 for 10 lines for members; $200 for non-members. Additional lines $10 each. Copy must be in the CSDA office no later than the first day of the month preceding publication

59 Apollo General Insurance Agency, Inc. 707-996-2912 x17 [email protected]

49 Brokk, Inc. 877-276-5548 [email protected]

39 Concrete Cutters Network 781-771-1672 [email protected]

45 Concut, Inc. 253-872-3507 [email protected]

59 Construction Americas 2015 305-348-3517 [email protected]

52 CS Unitec, Inc. 203-853-9522 [email protected]

51, Inside Front Cover Diamond Products 800-321-5336 [email protected]

61 Diamond Tools Technology 612-408-9253 [email protected]

29 Diamond Vantage 866-322-4078 [email protected]

10, 56 DITEQ Corporation 816-246-5515 [email protected]

69 Dixie Diamond Manufacturing 678-296-3751 [email protected]

58 EDCO-Equipement Development Co. 301-663-1600 [email protected]

31, 39 Expert Equipment Company 713-797-9886 [email protected]

62 GDM Technologies/Terra Diamond 801-990-9034 [email protected]

21 GelMaxx 619-701-7246 [email protected]

47 GMI Engineered Products 419-408-0497 [email protected]

17 Geophysical Survey Systems, Inc. (GSSI) 603-893-1109 [email protected]

Inside Back Cover Hilti North America 918-872-3079 [email protected]

36, 37, Outside Back Cover Husqvarna Construction Products 913-928-1442 [email protected]

2 ICS, Blount Inc. 800-321-1240 [email protected]

23 K2 Diamond 310-539-6116 [email protected]

13 Makita 714-522-8088 x4410 [email protected]

19 Merit Engineering & Equipment Company 928-771-0575 [email protected]

11 Pentruder, distributed by ICS, Blount Inc. 800-321-1240 [email protected]

53 Reimann & Georger Corporation (RAC) 716-895-1156 [email protected]

41 Sensors & Software 905-624-8909 [email protected]

16 Solutions Insurance Trust 312-283-1322 [email protected]

5 Western Saw 805-981-0999 [email protected]

PAGE ADVERTISER PHONE EMAIL

CONCRETE CUTTING BUSINESS FOR SALEBased in Austin, Texas, with the following items of equipment:

• 2x 65 hp Meco slab saw with low hours• 2x Cardi 4-speed core drills• 2x Cardi 3-speed core drills• 2x Ford work trucks—an F450 and an E250, including water tanks and pumps• 35 hp wall saw with diesel power unit, on a trailer• ICS chain saw and power unit• 20-inch-diameter hand saw• Other tools and equipment (contact for full details)

For more information, contact Mark at 512-422-3049 or email [email protected].

7 2 | DECEMBER.14

PATRICK O’BRIENExecutive Director

DIRECTOR’S DIALOGUE

Convergence

W hat does convergence have to do with concrete cutting? The definition of convergence means a coming together from different directions. Convergence is exactly what is

happening to CSDA and the industry.CSDA introduced its first training program, Cutting Edge, in the

mid-1990s. Since that time, many other classroom, hands-on and online training courses have been added and over 4,000 students have completed these courses. There has never been an industry requirement to train operators. The companies that train their operators do so because they believe the investment in improving employees is worth the cost and time. Many studies have shown the benefits of better trained employees, but not everyone agrees.

Somewhat independently, CSDA has also produced materials to help contractors with their safety needs. A CSDA Safety Manual and a CSDA Safety Handbook have been produced and a series of safety videos developed. But similar to training, these safety materials are not widely mandated. Some forward-thinking companies have taken advantage of these offerings while others do not see the need.

In addition, the association has been consistently working to introduce standards, specifications, tolerances and best practices. There have been 35 of these documents issued to date, each of which helps to define the work CSDA contractors do on a daily basis. Many of these documents have been adopted by specifying agencies such as the U.S. Military and NASA Unified Facilities Guide Specification (UFGS) Rehabilitation for Civil Work. These documents are steadily gaining acceptance in the construction industry.

The CSDA segment of the construction industry is relatively small and therefore does not fall under other work in areas of training, safety or standards. So CSDA has been progressive and has independently developed these courses, programs and documents.

The recent introduction of CSDA-ST-115 Measuring Concrete Micro Surface Texture for the concrete polishing floor industry has generated great interest with architects and engineers who want a detailed document that quantitatively defines the outcome of a polished floor rather than the previous subjective evaluations. To build on this interest, CSDA will be holding educational sessions on ST-115 at its 2015 Convention specifically for architects. So don’t be surprised if you see many new faces at the Convention and Tech Fair.

The CSDA Company Certification program has recently become the catalyst to converge the training, safety and standards that CSDA has independently developed over a number of years. The Certification Committee is working to refine the criteria for a Certified Company and it will include all of these previously separate elements. In consultation with the Construction Certification Institute, the committee has discovered that many of the requirements to enhance a CSDA certification program are already in place, they just need to be adopted and included in the program requirements.

There is a lot of work to be done, but the convergence of these separate entities has solidified the path for CSDA to enhance the professionalism of the industry and elevate CSDA to a higher level of performance with architects and engineers.



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Documents

Concrete Openings - December 14