006 - Vol 1 Division 5

NORTHSIDE BRANCH LIBRARY CONTRACT NO. CE 11-12-09

04/03/2012 05 12 00-1 Structural Steel Framing

SECTION 05 12 00

STRUCTURAL STEEL FRAMING

PART 1 GENERAL

1.1 DESCRIPTION OF WORK

A. The work included under this section consists of furnishing all material, supplies, equipment, tools, transportation, and facilities, and performing all labor and services necessary for, required in connection with or properly incidental to furnishing, fabricating, priming, and erecting structural steel and miscellaneous iron complete in place, as described in this section of the specifications, shown on the accompanying drawings, or reasonably implied therefrom, except as hereinafter specifically excluded.

1.2 SECTION INCLUDES

A. Structural steel framing members,.

1.3 RELATED REQUIREMENTS

A. Section 01352 – LEED Certification Requirements

B. Section 03 30 00 - Cast-in-Place Concrete: Grouting of column bases and placement of anchor bolts, assemblies and embeds

C. Section 05 31 00 - Steel Decking

1.4 REFERENCE STANDARDS (Editions adopted by current governing California Building Code)

A. AISC 303 - Code of Standard Practice for Steel Buildings and Bridges; American Institute of Steel Construction, Inc.

B. AISC 341 - Seismic Provisions for Structural Steel Buildings; American Institute of Steel Construction, Inc.

C. AISC 348 (RCSC) - Specification for Structural Joints Using ASTM A325 or A490 Bolts; American Institute of Steel Construction, Inc.

D. AISC 360 - Specification for Structural Steel Buildings; American Institute of Steel Construction Inc.

E. ASTM A36 - Standard Specification for Carbon Structural Steel.

F. ASTM A53 - Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.

G. ASTM A108 - Standard Specification for Steel Bar, Carbon and Alloy, Cold Finished.



H. ASTM A123 - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products.

I. ASTM A153 - Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware.

J. ASTM A193 - Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications.

K. ASTM A240 - Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications.

L. ASTM A276 - Standard Specification for Stainless Steel Bars and Shapes.

M. ASTM A307 - Standard Specification for Carbon Steel Bolts and Studs.

N. ASTM A325 - Standard Specification for Structural Bolts, Steel, Heat Treated.

O. ASTM A 449 - Standard Specification for Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use.

P. ASTM A490 - Standard Specification for Structural Bolts, Alloy Steel, Heat-Treated.

Q. ASTM A500 - Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes.

R. ASTM A563 - Standard Specification for Carbon and Alloy Steel Nuts.

S. ASTM A572 - Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel.

T. ASTM A 588 - Standard Specification for High-Strength Low-Alloy Structural Steel with 50 ksi Minimum Yield Point with Atmospheric Corrosion Resistance.

U. ASTM A653 - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process.

V. ASTM A780 - Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings.

W. ASTM A786 - Standard Specification for Hot-Rolled Carbon, Low-Alloy, High-Strength Low-Alloy, and Alloy Steel Floor Plates.

X. ASTM A992 - Standard Specification for Structural Steel Shapes.

Y. ASTM B695 - Standard Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel.

Z. ASTM F436 - Standard Specification for Hardened Steel Washers.



AA. ASTM F593 - Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs.

BB. ASTM F594 - Standard Specification for Stainless Steel Nuts.

CC. ASTM F844 - Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use.

DD. ASTM F959 - Standard Specification for Compressible-Washer-Type Direct Tension Indicators for Use with Structural Fasteners.

EE. ASTM F1554 - Standard Specification for Anchor Bolts, Steel, 36, 55, and 105-ksi Yield Strength.

FF. ASTM F1852 - Standard Specification for “Twist Off” Type Tension Control Structural Bolt /Nut /Washer Assemblies, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength.

GG. AWS D1.1 - Structural Welding Code - Steel; American Welding Society.

HH. AWS D1.6 - Structural Welding Code - Stainless Steel; American Welding Society.

II. SSPC-SP 6 - Commercial Blast Cleaning; Society for Protective Coatings.

1.5 SUBMITTALS

A. See applicable Division 01 Section for submittal procedures.

B. Shop Drawings

1. Shop drawings for steel fabrications shall show details of members, including connections, sizes, spacing of bolts and welds. They shall show the marking and position of each member, erection plans and the limits of paint applications. A complete anchor bolt/rod setting plan for the execution of the work shall be submitted.

2. Shop drawings and calculations for temporary shoring and bracing shall be submitted for review. The shop drawings shall show layout, size of members and connection details. Calculations shall show all stresses in members and connections, from dead, live, and lateral loads in accordance with the requirements of the CBC current governing edition. Shop drawings and calculations for temporary shoring and bracing shall be stamped and signed by a civil engineer registered in the State of California.

C. Certificates of Compliance

1. Structural Steel

a. The Contractor shall provide Mill Certificates for each grade of steel for each heat to be used on project and certify that products meet or exceed



specified requirements.

b. Mill Certificates shall include name of mill, date of rolling, date of shipping, ultimate tensile strength, yield strength, and percent of elongation.

c. Mill Certificates shall be furnished with each lot of material shipped to the site and shall be signed by the Contractor which will serve to certify that all structural steel materials installed comply with specified requirements.

2. Welding Material

a. The Contractor shall provide manufacturer's Certificates of Compliance for all electrodes, fluxes and shielding gasses to be used and certify that the filler metal meets the supplemental notch toughness requirements, as applicable.

3. Bolts

a. The Contractor shall provide Certificates of Compliance for bolts and certify that products meet or exceed specified requirements.

4. When Mill Certificates cannot be provided or does not supply required supplemental certifications, the Contractor shall hire a professional testing laboratory to verify compliance of each type of material to be used and provide laboratory test reports. The cost of testing shall be paid for by the Contractor.

D. Laboratory Test Reports

1. Laboratory test reports shall show the name of testing agency, date of testing, types of tests performed and shall be signed by a principal of the testing agency who is a registered civil engineer in the State of California.

2. When required by other portions of these specifications, laboratory test reports shall be submitted for each type of steel for each heat to show compliance with appropriate ASTM Standards and these specifications.

E. Welding Procedure Specifications (WPS)

1. Welding procedure specifications for all prequalified joints shall be submitted per AWS D1.1, Clause 3 and reviewed prior to beginning fabrication. Non-prequalified joints shall be qualified per AWS requirements. WPS shall specify all applicable variables of AWS D1.1, power source information, and electrode manufacturer and trade name.

F. LEED Submittal: LEED product data as specified in Division 1, Section 01352 - LEED Certification Requirements. See Section 01352 LEED Certification Requirements Part 1 and Part 2. Provide product data for the following LEED credits:

1. MRc4 Recycled Content



2. MRc5 Regional Materials

3. EQc4.2 Low-Emitting Materials, Paints & Coatings

1.6 QUALITY ASSURANCE

A. Codes and Standards: The fabrication, priming and erection of structural steel members shall comply with the current governing edition of CBC, AISC 360, AISC 303, AWS D1.1, AWS D1.6, and RCSC Specifications except where more stringent requirements are shown or specified.

B. Sampling, Testing, and Inspection:

1. General

a. If the special inspector, through oversight or otherwise, has accepted material or work which is defective or contrary to specifications, this material or work, regardless of state of completion, may be rejected.

2. Contractor

a. The Contractor shall cooperate with and notify Owner's agent at least 24 hours in advance of inspections required and shall supply samples, test pieces, and facilities for inspection without extra charge.

b. The Contractor shall identify and tag each lot of fabricated steel to be shipped to the site by heat numbers in such a manner that it can be accurately identified at the job site.

c. The Contractor shall remove all unidentified steel received at the site.

C. Credentials: Welding processes and welding operators shall be qualified in accordance with AWS D1.1. Welders to be employed are to provide AWS certification for the type of welding necessary.

PART 2 PRODUCTS

2.1 MATERIALS

A. Steel Angles and Channels: ASTM A36.

B. Steel W Shapes and WT Tees: ASTM A992.

C. Steel M Shape, S Shape, MT Tees and ST Tees: ASTM A36.

D. Steel HP Shape: ASTM A572, Grade 50.

E. Steel Plates, and Bars: ASTM A36 unless noted otherwise.

F. Steel Plates and Bars: ASTM A572, Grade 50 where shown on structural drawings.



G. Structural Tubing: ASTM A500, Grade B.

H. Pipe: ASTM A53, Type E or S, Grade B, with sulphur not exceeding 0.05%.

I. Shear Stud Connectors: ASTM A108 Type B.

J. Machine Bolts and Nuts: Heavy Hex, Carbon steel, ASTM A307, manufactured to American Standard Bolt and Nut dimensions with "Free Fit - Class 2" threads with matching finish ASTM A563 nuts. All unfinished bolts shall have an approved lock washer under nut.

K. Threaded Rod and Nuts: Carbon steel, ASTM A36, manufactured to American Standard Bolt and Nut dimensions with "Free Fit - Class 2" threads. All unfinished bolts shall have an approved lock washer under nut. Rods embedded in concrete, grout or adhesive shall be galvanized or non-lubricated unless noted otherwise.

L. Smooth Rods: Smooth Rods shall conform to ASTM A36.

M. Anchor Rods and Nuts: ASTM F1554 Grade 36 Class 2A with matching finish ASTM A563 nuts. Rods embedded in concrete, grout or adhesive shall be galvanized or non-lubricated unless noted otherwise. Embedded rods without a head, nut or hook for anchorage shall be threaded full length.

N. High Strength Anchor Rods and Nuts: ASTM F1554 Grade 105 Class 2A with matching finish ASTM A563 nuts. Rods embedded in concrete, grout or adhesive shall be galvanized or non-lubricated unless noted otherwise. Embedded rods without a head, nut or hook for anchorage shall be threaded full length.

O. High-Strength Structural Bolts and Nuts:

1. Conventional Bolts: ASTM A325, Type 1.

2. Twist-Off-Type Tension-Control Bolt Assembly: ASTM F1852. The use of these devices must conform to the requirements in the RCSC Specification.

3. Compressible-Washer-Type Direct-Tension Indicator: ASTM F959. The use of these devices must conform to the requirements in the RCSC Specification.

4. Nuts: ASTM A563. Finish shall match fastener.

P. Washers shall be flat circular, rectangular or square beveled washers and shall conform to ASTM F436 Type 1 for high strength bolts/rods and ASTM F844 for other bolts/rods. Washer finish shall match nut. Washers shall be installed under the element being turned. Washers over oversized or slotted holes shall also comply with RCSC Specification section 6.

Q. Raised-Pattern Floor Plates: ASTM A786 Commercial Grade.

R. Forged Steel Structural Hardware:



1. Clevises and turnbuckles shall conform to AISI C1035.

2. Eye nuts and eye bolts shall conform to AISI C1030.

3. Sleeve nuts shall conform to AISI C1018 grade 2.

S. Welding Filler Metal: Arc-welding electrodes shall be E70 series electrodes for A36, A572 and A992 material. Electrodes shall be as recommended by their manufacturers for the positions and conditions of actual use.

1. Weld metal toughness shall be reported on the filler metal manufacturer's certificate of compliance. All filler metal shall have a minimum CVN value of 20 ft-lbs at 0° F. Exceptions: Metal deck welding, stair and handrail welding, and light gage steel welding.

2. Demand critical welds (DCW) shall use filler metal with a minimum CVN value of 20 ft-lbs at -20° F and 40 ft-lbs at 70° F.

T. Paint System: Paint system shall consist of Corothane I Galvapac Zinc Primer and Fast Clad Urethane topcoat or approved equal. Prepare surfaces and apply coatings according to manufacturer's specifications.

2.2 FABRICATION

A. The Fabricator shall provide quality control inspections for welding and bolting operation; and reduced beam sections, where exist, per AISC 341 Appendix Q section Q5.

B. Shop fabricate to greatest extent possible.

C. Locate concrete reinforcement and confirm final concrete anchor locations prior to fabricating plates, members or other steel assemblies attached with anchors.

D. Welding:

1. Connections and joints that are part of SFRS, shall be welded in accordance with AISC 341, Appendix W.

2. Tack welds, air-arc gouging and flame cutting shall not be performed without adequate preheat or incorporation into the final weld.

3. The filler metal manufacturer's published recommendations shall be the basis for determining the allowable range of essential variables for a prequalified WPS. Unless noted otherwise on the plans, back-up bars for CJP welds shall be removed followed by backgouging and backwelding.

E. High Strength Bolting: All high strength bolted connections shall be Slip Critical type connections unless noted otherwise.

2.3 FINISH



A. Galvanizing:

1. Galvanize all structural steel where shown on the drawings.

2. Galvanizing of products fabricated from rolled, pressed and forged steel shapes, plates, bars and strip 1/8 inch thick or thicker, shall conform to ASTM A123.

3. Galvanizing of standard pipe shall conform to ASTM A53.

4. Galvanizing of iron and steel hardware and nuts and bolts shall conform to ASTM A153 class C, except whenever threaded studs, bolts, nuts, and washers are specified to conform to ASTM A307, A325, A449, A563, or F436 and zinc coating is required, they shall be hot-dip zinc coated per ASTM A153 or mechanically zinc coated per ASTM B695 class 55 or greater. Unless otherwise specified, galvanizing shall be performed after fabrication. Components of bolted assemblies shall be galvanized separately before assembly.

5. Nuts to be used on bolts/rods/studs before hot-dip galvanizing, and then hot-dip galvanized in accordance with ASTM A153 class C, shall be tapped oversize after coating and shall conform to thread dimension and overtapping allowances in ASTM A563.

6. Galvanized surfaces that are abraded or damaged at any time after the application of the zinc coating shall be repaired by thoroughly wire brushing the damaged areas and removing loose and cracked coating, after which the cleaned areas shall be painted with 2 applications of unthinned zinc-rich primer containing not less than 94% zinc dust by weight according to ASTM A780. Aerosol cans shall not be used.

B. Painting:

1. Steel that is exposed to view and/or weather shall be painted unless noted as galvanized on the contract drawings. Do not paint surfaces that will be fireproofed or 2 inches around the faying surface of slip critical connections and 2 inches around areas where field welding will occur. Painting shall consist of a prime coat followed by finish coats as specified by the architect. Touch-up painting is required at field weld locations.

a. Primer and finish paint shall be delivered in original sealed containers marked with manufacturer's name and brand identification.

b. Use primer and finish paint as prepared by the manufacturer without thinning or other admixture unless so stated by the manufacturer. Do not do any painting in temperatures lower than 45 °F.

PART 3 EXECUTION

3.1 ERECTION



A. The Contractor will be responsible to erect the complete structural frame plumb and true to line and grade, in conformance with the AISC 303.

B. Temporary Bracing and Shoring:

1. The Contractor shall temporarily brace the frame in both directions and shall maintain columns plumb until the final connections of the framework and construction of diaphragms are complete.

2. The Contractor shall provide such temporary shoring and additional bracing of steel frame as required to adequately and safely support any or all loads imposed upon the structure during construction.

C. After erection, where the member is galvanized or painted, field welds, abrasions or scratched surfaces, and surfaces not shop primed or galvanized, shall be primed if member is painted or painted if member is galvanized, except surfaces to be in contact with concrete. The entire work shall be left in a neat, clean and acceptable condition.

3.2 FIELD QUALITY CONTROL

A. The Contractor shall provide field quality control inspections for welding and bolting operation; and reduced beam sections, where exist, per AISC 341 Appendix Q section Q5.

B. The Contractor shall hire the Engineer responsible for the design of temporary bracing and shoring to inspect the work as detailed on the reviewed shop drawings.

C. The Engineer responsible for design, temporary bracing and shoring shall write a letter to the Architect certifying construction of temporary bracing and shoring is in accordance with the reviewed shop drawings, prior to start of construction requiring temporary bracing or shoring.

END OF SECTION



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NORTHSIDE BRANCH LIBRARY CONTRACT NO. CE 11�12�09

04/03/2012 05 12 13�1 Architecturally Exposed

Structural Steel

SECTION 05 12 13

ARCHITECTURALLY EXPOSED STRUCTURAL STEEL

PART 1 GENERAL


A. Requirements regarding features affecting appearance of Architecturally Exposed Structural Steel (AESS) which are additional to requirements specified for structural steel framing.

1.2 RELATED SECTIONS

A. Section 05 12 00 � Structural Steel Framing: Requirements for AESS not affecting appearance.

B. Section 09 96 54 – High Performance Urethane Coating: Finish coat requirements.

1.3 REFERENCES

A. AICS 303 � Code of Standard Practice for Steel Buildings and Bridges.

B. SSPC – Society for Protective Coatings.

C. CGBSC � California Green Building Standards Code, 2010 edition.

1.4 DESIGN REQUIREMENTS A. Sustainable Design Requirements: Materials and products specified in this section are intended to contribute credits for LEED certification as specified in Division 1 Section “LEED Certification Requirements.” 1. Refer to and comply with LEED requirements specified in Division 1 “LEED Certification Requirements” section. 2. Potential credits include: a. MRc4 Recycled Content. b. MRc5 Regional Materials.

1.5 SUBMITTALS

A. Shop Drawings: In addition to requirements of Section 05 12 00 � Structural Steel Framing:

1. Identify AESS members on fabrication and erection drawings.



Structural Steel

2. Identify special tolerances and erection requirements as noted on Drawings or defined herein.

3. Clearly indicate which surfaces or edges are exposed and associated surface preparation and finish.

B. LEED Documentation: Submit product data as specified in Division 1 “LEED Certification Requirements” section for following LEED credits:

1. MRc4 Recycled Content. 2. MRc5 Regional Materials.


A. Comply with applicable provisions of Section 10 of AISC’s "Code of Standard Practice", except where more stringent requirements are shown or specified.

1.7 REGULATORY REQUIREMENTS

A. Primer: Comply with requirements of CGBSC Section 5.504.4.3.

1.8 MOCK�UPS

A. At least 4 weeks prior to fabricating architecturally exposed structural steel, construct mockups of architecturally exposed structural steel items noted on Drawings using materials and methods specified herein demonstration aesthetic effects and qualities of materials and execution.

B. Schedule construction of mock�up allowing sufficient time for Architect's review and acceptance prior to general installation of work of this section.

C. Construct mock�ups from full�sized members matching conditions shown on Drawings, unless otherwise directed by Architect.

D. Construct mock�ups to include horizontal/vertical member intersection with horizontal and vertical members extending 3 feet from intersection.

E. Prepare mock�ups surfaces with specified primer and finish applied.

1. Locate mock�ups on project site at mutually agreeable location. Mock�ups shall be easily visible and accessible throughout architecturally exposed structural steel construction.

2. Notify Architect at least 1 week prior to date when mockups will be available for review.

F. Rebuild mock�up panels not meeting specified requirements as directed by Architect. Obtain Architect’s approval of mockups before starting fabrication of architecturally exposed structural steel.



Structural Steel

G. Accepted mock�ups will establish minimum standard of quality and workmanship for architecturally exposed structural steel work specified under this section.

H. Retain accepted mock�ups in undisturbed condition until work of this section is complete.

I. Accepted mock�ups may not remain as part of work.

1.9 DELIVERY, STORAGE, AND HANDLING

A. Deliver products to site, store, handle and protect in accordance with fabricator’s instructions and recommendations.

B. Use special care in handling to prevent twisting or warping of AESS members.

C. Weld tabs for erection, temporary bracing, and safety cabling only at points concealed from view in completed structure.

D. Where prime painted items cannot be finish painted after erection, allow for finish painting prior to erection.

1.10 COORDINATION

A. Coordinate locations and sizes of penetrations and openings in architecturally exposed structural steel with Drawings and work of other trades. Verify conformance with structural requirements shown on Drawings.

B. Where architecturally exposed structural steel elements are indicated to fit against concrete or other construction, verify dimensions in field prior to fabrication.

PART 2 PRODUCTS

2.1 MATERIALS

A. General: Conform to requirements Section 05 12 00 � Structural Steel Framing and

additional requirements of this Section.

B. Exposed Surfaces: Use only materials that are smooth and free of surface blemishes including pitting, rust and scale seam marks, roller marks, rolled trade names, and roughness. Remove such blemishes by grinding or by filling and grinding, prior to cleaning, treating, and applying surface finishes.

C. Primer Paints: Same as specified in Section 05 12 00 � Structural Steel Framing.

2.2 FABRICATION

A. General: Conform to requirements Section 05 12 00 Structural Steel Framing and additional requirements of this Section.



Structural Steel

B. Fabricate and assemble AESS in shop to greatest extent possible. Locate field joints in AESS assemblies at concealed locations or as authorized by Architect.

C. Fabricate AESS with exposed surfaces smooth, square and of surface quality consistent with accepted sample.

1. Grind exposed edges of sheared, punched or flame�cut steel to remove burrs and marks to match accepted sample.

D. Fabrication Tolerances:

1. Fabricate AESS to one�half of tolerances for common structural steel, in accordance with AISC 303, Section 10.

2. Joint Gaps: Maintain uniform gap of 1/8 inch ± 1/32 inch.

3. Copes and Blocks: Maintain uniform gap of 1/8 inch ± 1/32 inch.

E. Welds:

1. Assemble and weld pieces by methods that will maintain alignment of members without warp exceeding tolerances of this section.

2. Use weld types that do not require backing bars or access holes to extent practical. Remove fabrication aids and repair surfaces by welding and grinding.

3. Fill weld access holes and finish flush with adjacent surfaces. Fill with metal, except where epoxy fillers are acceptable to Architect.

2.3 FINISHES

A. Surface Preparation:

1. Ease corners of plates and shapes to receive primer to uniform 1/16�inch chamfer.

2. After fabrication, prepare steelwork to be prime painted in accordance with SSPC�SP6, "Commercial Blast Cleaning".

B. Prime Painting

1. See requirements of Section 05 12 00 � Structural Steel Framing.

2. Do not paint following surfaces:

a. Surfaces to be embedded in concrete, except initial two inches.

b. Faying surfaces of high�strength bolted connections painted with Type C primer.



Structural Steel

c. Surfaces to be field welded.

2.4 SOURCE QUALITY CONTROL

A. Architect reserves right to visit fabrication plant to view items after fabrication for imperfections that might result in rejection of appearance of member.

PART 3 EXECUTION

3.1 EXAMINATION

A. Examine installed work of other trades to determine acceptability for installation. Verify that such work is complete to point where work of this section may begin and is acceptable for product installation.

B. Verify items provided by other sections of work are properly sized and located.

C. Examine architecturally exposed structural steel members upon delivery for imperfections that might result in rejection of member due to appearance. Coordinate remedial action with fabricator and Architect prior to erecting steel.

D. Do not begin installation until unsatisfactory conditions have been corrected.

3.2 PROTECTION OF MATERIALS

A. Protect materials from damage, weather, and contaminants such as grease, oil, and dirt.

3.3 PREPARATION

A. Make temporary erection connections at locations not exposed to view in final condition or as authorized by Architect.

3.4 ERECTION

A. General: Conform to requirements Section 05 12 00 � Structural Steel Framing and additional requirements of this Section.

B. AESS Erection Tolerances: Meeting requirements of AISC 303, Chapter 10.

1. Splice members only where indicated.

C. Bolting: Where bolt�head alignment is specified, note orientation for each connection on erection drawings. Where not noted, orient bolt heads in given connection to one side.



Structural Steel

D. Welding: Conform to applicable requirements of Article 2.2, “Fabrication” and following:

1. Remove run�out tabs, erection bolts and other added to connections to allow for alignment steel members, fit�up, and welding in field from structure. Remove welds at run�out tabs match adjacent surfaces and grind smooth. Plug weld holes for erection bolts and grind smooth.

2. Fill holes where holes must be cut in web at intersection with flanges on W shapes and structural tees to permit field welding of flanges.

a. Execute filling with approved procedures for connections that are part of Seismic Lateral Resisting System for building.

E. Field Touch�up Painting: After erection, touch�up field welds and abraded areas of shop paint to blend with adjacent surfaces of AESS.

1. Touch up surfaces to receive with same paint used for shop priming.

2. Prior to painting welds, thoroughly chip and wire brush. Wash with dilute solution of phosphoric acid (approximately 5%) and rinse with water. Allow surface to dry prior to painting.

END OF SECTION


04/03/2012 05 31 00-1 Steel Deck

SECTION 05 31 00

STEEL DECK

PART 1 GENERAL


A. The work included under this section consists of furnishing all materials, supplies, equipment, tools, transportation and facilities and performing all labor and services necessary for, required in connection with or properly incidental to installing all steel deck as described in this section of the specifications, shown on the accompanying drawings, or reasonably implied therefrom, except as hereinafter specifically excluded.


A. Roof deck.

B. Supplementary framing for openings up to and including 18 inches.



B. Section 03 30 00 - Cast-in-Place Concrete: Concrete topping over metal deck.

C. Section 05 12 00 - Structural Steel Framing.


A. AISI S100 - North American Specification for the Design of Cold-Formed Steel Structural Members; American Iron and Steel Institute.

B. ASTM A653 - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process.

C. AWS D1.3 - Structural Welding Code - Sheet Steel; American Welding Society.

D. SDI MOC - Manual of Construction with Steel Deck.

E. SDI (DM) - Publication No.31, Design Manual for Composite Decks, Form Decks, Roof Decks; Steel Deck Institute.

F. SSPC-Paint 20 - Zinc-Rich Primers (Type I, "Inorganic," and Type II, "Organic"); The Society for Protective Coatings.

1.5 SUBMITTALS

A. See applicable Division 01 section for submittal procedures.


04/03/2012 05 31 00-2 Steel Deck

B. Product Data

1. Provide manufacturer's catalog sheets including instruction for use and description of application for each type of metal deck.

C. Mill Certificates

1. The Contractor shall provide Mill Certificates for each heat of each type of metal deck to be used on project.

2. Mill Certificates shall include name of mill, date of rolling, date of shipping, yield point and minimum tensile strength.

3. Mill Certificates shall be provided with each lot of material shipped to the site and shall be signed by the Contractor which will serve to certify that all metal deck materials installed comply with specified requirements.

4. When Mill Certificates cannot be provided, the Contractor shall hire a professional testing laboratory to verify compliance and provide laboratory test reports. The cost of testing shall be paid for by the Contractor.

D. Laboratory Test Reports

1. Laboratory test reports shall show the name of testing agency, date of testing, types of tests performed and shall be signed by a principal of the testing agency who is a registered Civil Engineer in the State of California.

2. When required by other portions of these specifications, laboratory test reports shall be submitted for each deck type tested to show compliance with appropriate ASTM Standards and these specifications.

E. ICC or IAPMO Approvals

1. Each type of metal deck proposed for use on project shall have ICC or IAPMO approval for vertical load and diaphragm rating capacities in accordance with the requirements shown on the structural drawings or required by these specifications.

F. LEED Submittal: LEED product data as specified in Division 1, Section 01352 – LEED Certification Requirements. See Section 01352 LEED Certification Requirements Part 1 and Part 2. Provide product data for the following LEED credits:



3. EQc4 Low-Emitting Materials, Paints & Coatings


04/03/2012 05 31 00-3 Steel Deck


A. Codes and Standards: The fabrication and erection of metal deck shall comply with all the applicable provisions of the following codes, specifications, and standards, except where more stringent requirements are shown or specified:

1. CBC current governing edition.

2. Code of Recommended Practice, SDI, current edition.

1. AISI S100

B. Sampling, Testing and Inspection:

1. If the inspector, through oversight or otherwise, has accepted material or work which is defective or contrary to specifications, this material or work, regardless of state of completion, may be rejected.

2. The Contractor shall identify and tag each lot of deck to be shipped to the site by heat number in such a manner that it can be accurately identified at the job site.

3. The Contractor shall remove all unidentified metal deck received at the site.

C. Installer Credentials: Company specializing in performing the work of this Section approved by manufacturer and having 5 years previous experience in its installation.

PART 2 PRODUCTS

2.1 STEEL DECK

A. Roof Deck: Non-composite type, fluted steel sheet:

1. Galvanized Steel Sheet: ASTM A653, Structural Steel (SS) Grade 33, with G60 galvanized coating.

2. Structural Properties: The deck type (profile) and thickness (gage) shall be as shown on the plans.

B. Tolerance:

1. Uncoated thickness shall not be less than 95% of the design thickness as listed in following table:


04/03/2012 05 31 00-4 Steel Deck

Gage No.

Design Thickness (in)

Minimum Thickness (in)

28 0.0149 0.014 26 0.0179 0.017 24 0.0238 0.023 22 0.0295 0.028 20 0.0358 0.034 18 0.0474 0.045 16 0.0598 0.057

2. Panel length shall be within plus or minus 1/2 in. of specified length.

3. Panel cover width shall be no greater than minus 3/8 in., plus 3/4 in.

4. Panel camber and/or sweep shall be no greater than 1/4 in. in 10 ft. length.

5. Panel end out of square shall not be greater than 1/8 in. per ft. of panel width.

2.2 ACCESSORY MATERIALS

A. Fasteners: See structural drawings.

B. Weld Washers: Mild steel, uncoated, 3/4 inch outside diameter, 3/8 inch hole diameter, and 1/8 inch thick.

C. Touch-Up Primer for Galvanized Surfaces: SSPC-Paint 20, complying with VOC limitations of authorities having jurisdiction.

2.3 FABRICATED DECK ACCESSORIES

A. Sheet Metal Deck Accessories: Pour stops, column closures, end closures, cover plates, and girder fillers shall be the type suitable for the application and conform to ASTM A653 Structural Steel (SS). Pour stop minimum gages shall be in accordance with SDI RD1.0 Pour Stop Selection Table.

PART 3 EXECUTION

3.1 INSTALLATION

A. Install metal deck and accessories in accordance with manufacturer's instructions and SDI MOC.

B. Metal deck shall be installed continuous over three span minimum. Care shall be exercised to properly fit male-female units of side laps before crimping or connecting.

C. End joints shall occur at points of support only with a minimum end bearing of 2 inch.

D. Attachment of the metal deck to the steel frame and side lap connections shall be as shown on the structural drawings.


04/03/2012 05 31 00-5 Steel Deck

E. Welding washers shall be used on all deck units with metal thickness less than 0.028 inches.

F. Where welding washers are not used, a minimum visible 5/8 inch diameter arc puddle weld shall be used. Weld metal shall penetrate all layers of deck material at end laps and shall have good fusion to the supporting members.

G. Weld deck in accordance with AWS D1.3.

H. Furnish and install diagonal supports at columns and any other miscellaneous structural supports which are required to carry the metal deck and are not shown on the plans.

I. Trades that subsequently cut openings not shown on the structural drawings, shall be responsible for reinforcing these openings based upon an approved engineered design.

J. Weld stud shear connectors through steel deck to structural members below in accordance with manufacturer’s recommendations.

K. Immediately after welding deck and other metal components in position, coat welds, burned areas, and damaged surface coating, with touch-up primer if the surface is not protected by concrete.

L. Any deck which is found to be damaged shall be removed and replaced at the Contractor's expense.

END OF SECTION


04/03/2012 05 31 00-6 Steel Deck



04/03/2012 05 40 00-1 Cold-Formed Metal Framing

SECTION 05 40 00

COLD FORMED METAL FRAMING

PART 1 GENERAL


A. The work included under this section consists of furnishing all material, supplies, equipment, tools, transportation, and facilities, and performing all labor and services necessary for, required in connection with or properly incidental to furnishing, fabricating, and erecting cold-formed metal framing complete in place, as described in this section of the specifications, shown on the accompanying drawings, or reasonably implied therefrom, except as hereinafter specifically excluded.


A. Formed steel stud exterior wall and interior wall framing.

B. Formed steel joist and purlin framing and bridging.



B. Section 03 30 00 - Cast-in-Place Concrete: Grout under base plate, bearing plates and channels.

C. Section 05 12 00 - Structural Steel Framing.

D. Section 05310 - Steel Deck.


A. AISC 303 - Code of Standard Practice for Steel Buildings and Bridges; American Institute of Steel Construction, Inc.

B. AISI S100 - North American Specification for the Design of Cold-Formed Steel Structural Members; American Iron and Steel Institute.

C. ASTM A36 - Standard Specification for Carbon Structural Steel.

D. ASTM A123 - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products.

E. ASTM A153 - Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware.

F. ASTM A653 - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process.



G. ASTM A780 - Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings.

H. ASTM A1003 - Standard Specification for Steel Sheet, Carbon, Metallic- and Nonmetallic-Coated for Cold-Formed Framing Members

I. ASTM C955 - Standard Specification for Load-Bearing (Transverse and Axial) Steel Studs, Runners (Tracks), and Bracing or Bridging for Screw Application of Gypsum Panel Products and Metal Plaster Bases.

J. ASTM C1513 - 10 Standard Specification for Steel Tapping Screws for Cold-Formed Steel Framing Connections

K. ASTM C1513 - Standard Specification for Steel Tapping Screws for Cold-Formed Steel Framing Connections.

L. AWS D1.1 - Structural Welding Code - Steel; American Welding Society.

M. AWS D1.3 - Structural Welding Code - Sheet Steel; American Welding Society.

N. SSPC-Paint 20 - Zinc-Rich Primers (Type I, "Inorganic," and Type II, "Organic"); Society for Protective Coatings.

1.5 SUBMITTALS

A. See applicable Division 01 Section for submittal procedures.

B. Product Data

1. Provide Manufacturer's product information and installation instructions for each item of metal framing and accessories.

C. Shop Drawings

1. Show layout, spacing, sizes, coating, thicknesses, and types of cold-formed metal framing, fabrication, fastening and anchorage details, including mechanical fasteners. Show reinforcing channels, opening framing, supplemental framing, strapping, bracing, bridging, splices, accessories, connection details, and attachment of other work. Show all work necessary for Engineer and Architect to review of Contractors understanding of the contract drawings.

D. Deferred Submittal

1. Contractor shall design all cold formed metal framing necessary for the project. Structural calculations, drawings and specifications shall be created, submitted to the Architect/Engineer for review and then submitted to the City of Santa Clara for plan check and approval. Plans and calculations shall be complete and shall show all member locations, spacing, loading and other information necessary for the cold-formed metal work to be constructed. Plans and calculations shall be signed by a Structural Engineer registered in the State of California.



E. LEED Submittal: LEED product data as specified in Division 1, Section 01352 – LEED Certification Requirements. See Section 01352 LEED Certification Requirements Part 1 & Part 2. Provide product data for the following LEED credits:



3. EQc4.2 Low-Emitting Materials, Paints & Coatings


A. Codes and Standards: The fabrication and erection of cold-formed metal framing shall comply with all the applicable provisions of the following codes, specifications, and standards, except where more stringent requirements are shown or specified:

1. AISI S100

2. AISC 303

3. AWS D1.3

4. AWS D1.1

B. Credentials: Welding processes and welding operators shall be qualified in accordance with AWS D1.1 and D1.3. Welders to be employed are to provide AWS certification for the type of welding necessary.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Protect metal framing units from rusting and damage.

B. Deliver to Project site in manufacturer's unopened containers or bundles, identified with name, brand, type and grade.

C. Store off ground in a dry ventilated space or protect with suitable waterproof covering.

PART 2 PRODUCTS

2.1 MANUFACTURERS

A. Metal Framing, Connectors, and Accessories:

1. American Studco, Inc., Angeles Metal Systems, California Metal Systems, Inc., Consolidated Fabricators Corp., Design Shapes in Steel, Dietrich Industries, Inc., Knorr Steel Framing Systems, The Steel Network, Inc., Unimast, Inc., United Construction Supply, Western Metal Lath Co. or approved equal.



2.2 FRAMING SYSTEM

A. Provide primary and secondary framing members, bridging, bracing, plates, gussets, clips, fittings, reinforcement, and fastenings as required to provide a complete framing system.

2.3 FRAMING MATERIALS

A. Base Metal for All Members and accessories: ASTM A1003 steel sheet, galvanized in accordance with ASTM A653 G60 coating.

1. Structural Grade 33 type H for 33 mil and 43 mil members.

2. Structural Grade 50 type H for 54 mil and thicker members.

B. Tracks: ASTM C955; Manufacturer's standard U-shaped (T type) steel track, unpunched, with straight flanges (unstiffened flanges).

1. Size: Match steel studs.

2. Gage: Match steel studs (54 mil minimum thickness).

C. Studs and Wall Blocking: ASTM C955; Manufacturer's standard C-shaped (S type) steel studs, punched with minimum 1-5/8 inch lipped flanges (stiffened flanges).

1. Gage and size: As required by design and coordinated with the drawings (33 mil minimum).

D. Headers: Manufacturer's standard C-shapes (S type) used to from header beams, punched, with minimum 1-5/8 inch lipped flanges (stiffened flanges).

1. Gage and size: As required by design and coordinated with the drawings (33 mil minimum).

E. Joists and Purlins: ASTM C955; Manufacturer's standard C-shaped (S type) steel studs, with minimum 1-5/8 inch lipped flanges (stiffened flanges).

1. Gage and size: As required by design and coordinated with the drawings.

2.4 ACCESSORIES

A. Framing Connectors: Factory-made formed steel sheet, thickness determined for conditions encountered, finish to match framing components and factory punched holes.

B. Structural Steel Shapes and Clips: ASTM A36, zinc coated by the hot-dip process according to ASTM A123.

C. Bracing, Furring, Bridging: Formed steel sheet, thickness determined for conditions encountered; finish to match framing components.



D. Touch-Up Primer for Galvanized Surfaces: SSPC-Paint 20, with dry film containing a minimum of 94% zinc dust by content, complying with VOC limitations of authorities having jurisdiction.

2.5 FASTENERS

A. Self-Drilling, Self-Tapping Screws: ASTM C1513, hot dip galvanized per ASTM A153.

B. Bolts, Nuts and Washers: Hot dip galvanized per ASTM A153.

C. Powder Actuated Fastener:Hilti X-U fastener (ESR-2269) or approved equal for dry-interior use and Hilti X-CR (ESR-1663) or approved equal for exterior use. Install per current ICC report and Manufacturer's recommendations.

D. Welding and Electrodes: In conformance with AISI Manual, AWS D1.1 and AWS D1.3.

E. Slide Clips: Manufacturer's standard bypass or head clips, capable of accommodating 1/2 inch (upward and downward) vertical displacement and/or 1/2 inch lateral drift of structural roof using slotted holes, screws and anti-friction bushings, while maintaining structural performance of framing. Use only the products that have a valid ICC/ IAPMO evaluation report.

2.6 GROUT

A. As specified in Section 03 30 00.

2.7 FABRICATION

A. Fabricate cold-formed metal framing and accessories plumb, square, true to line, and with connections securely fastened, according to manufacturer's recommendations and ASTM C1007 requirements except where more stringent requirements are shown or specified.

1. Fabricate framing assemblies in jig templates.

B. Reinforce, stiffen, and brace framing assemblies to withstand handling, delivery, and erection stresses. Lift fabricated assemblies to prevent damage or distortion.

C. Fabrication Tolerances: Fabricate assemblies to a maximum allowable tolerance variation per ASTM C1007.

PART 3 EXECUTION

3.1 EXAMINATION

A. Examine supporting substrates and abutting structural framing for compliance with requirements, including installation tolerances and other conditions affecting performance of cold-formed metal framing. Do not proceed with installation until unsatisfactory conditions have been corrected.



3.2 PREPARARTION

A. Grout bearing surfaces uniform and level to ensure full contact of bearing flanges or track webs on supporting concrete or masonry construction.

3.3 INSTALLATION OF FRAMING

A. Install components in accordance with manufacturers' instructions and ASTM C1007 requirements except where more stringent requirements are shown or specified.

B. Cold-formed metal framing may be shop or field fabricated for installation or it may be field assembled.

C. Install framing members in one-piece lengths, unless splice connections are indicated for track or tension members.

D. Do not bridge building expansion and control joints with cold-formed metal framing. Independently frame both sides of joints.

E. Erection Tolerances: Install cold-formed metal framing to a maximum allowable tolerance variation per ASTM C1007.

F. Install continuous top and bottom tracks. Align tracks accurately and securely anchor at corners and ends, and at 24-inches on center for powder-driven anchors, 32-inches on center for expansion anchors unless noted otherwise on contract drawings.

G. Set studs plumb, except as required for diagonal bracing for nonplumb walls or warped surfaces.

H. Align studs vertically where wall framing continuity is interrupted by horizontal framing. Where studs cannot be aligned, continuously reinforce track to transfer loads.

I. Anchor studs abutting structural columns or walls to supporting structure.

J. Install headers over wall openings wider than the stud spacing. Locate headers above openings as indicated. Fabricate headers of compound shapes, complete with clip-angle connectors, web stiffeners, or gusset plates.

1. Frame wall openings with not less than a double stud at each jamb of frame.

2. Install runner tracks and jack studs above and below wall openings. Anchor tracks to jamb studs with clip angles or by welding, and space jack studs same as full height wall studs.

K. Install supplementary framing, blocking, and bracing in stud framing indicated to support fixtures, equipment, services, casework, furnishings, and similar work requiring attachment to framing.

L. Install slide clips or deep leg track where studs are attached to building structure to allow for building slab deflection without transmitting forces to metal studs.



M. Install horizontal bridging in stud system, spaced in rows not more than 48-inches apart. Fasten at each stud intersection.

N. Install miscellaneous framing and connections, including supplementary framing, web stiffeners, clip angles, continuous angles, anchors, and fasteners, to provide a complete and stable wall framing system.

3.4 FABRICATED WALL PANEL INSTALLATION

A. Install fabricated wall panels and securely anchor to supporting structure.

B. Erection Tolerances: Bolt or weld wall panels at horizontal and vertical junctures to produce flush, even, true to line joints.

1. Maximum variation in plane and true position between prefabricated assemblies shall not exceed 1/16-inch.

3.5 REPAIRS AND PROTECTION

A. Galvanizing Repair: Prepare and repair damaged galvanized coatings on fabricated and installed cold-formed metal framing with galvanized repair paint according to ASTM A780.

B. Provide final protection and maintain conditions in a manner acceptable to manufacturer and installer to ensure that cold formed metal framing is without damage or deterioration at time of Substantial Completion.

END OF SECTION





04/03/2012 05 50 00�1 Metal Fabrications

SECTION 05 50 00

METAL FABRICATIONS PART 1 GENERAL


A. Miscellaneous metal and fabricated ferrous metal items, galvanized and prime painted.

B. Accessories.

C. Refer to schedule at end of this section.

1.2 PRODUCTS SUPPLIED BUT NOT INSTALLED UNDER THIS SECTION

A. Supply metal fabrications to be cast in structural concrete to Section 03 30 00 � Cast�In�Place Concrete.

1.3 RELATED SECTIONS

A. Section 03 30 00 � Cast�in�Place Concrete.

B. Section 05 12 00 � Structural Steel Framing.

C. Section 05 40 00 � Cold Formed Metal Framing: Load bearing light gauge metal framing and backing.

D. Section 05 51 33� Metal Ladders.

E. Section 05 73 93 – Decorative Metal Roof Screens.

F. Section 09 22 16 � Non�Structural Metal Framing: Non�load bearing light gauge metal framing and backing.

G. Section 09 91 00 � Painting: Field painting of metal fabrications.

H. Other metal items are specifically called for and described in other sections. 1.4 REFERENCES

A. AA � Aluminum Association Finishes Designation System.

B. ANSI B18.21.1 � Lock Washers.

C. ANSI B18.22.1 � Plain Washers.

D. ASTM A36 � Specification for Carbon Structural Steel.



E. ASTM A53 � Specification for Hot�Dipped, Zinc�Coated Welded and Seamless Steel Pipe.

F. ASTM A123 � Specification for Zinc (Hot�Dip Galvanized) Coatings on Iron and Steel Products.

G. ASTM A153 � Specification for Zinc Coating (Hot�Dip) on Iron and Steel Hardware.

H. ASTM A283 � Specification for Low and Intermediate Tensile Strength Carbon Steel Plates, Shapes and Bars.

I. ASTM A307 � Specification for Low�Carbon Steel Externally and Internally Threaded Fasteners.

J. ASTM A500 � Specification for Cold�Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes.

K. ASTM A653 � Steel Sheet, Zinc�Coated, (Galvanized) or Zinc�Iron Alloy Coated (Galvannealed) by the Hot�Dip Process.

L. ASTM A1008 � Specification for Steel Sheet, Cold�Rolled, Carbon, High�Strength Low�Alloy and High�Strength Low Alloy with Improved Formability.

M. ASTM B209 � Specification for Aluminum and Aluminum Alloy Sheet and Plate.

N. ASTM B221 � Aluminum Alloy Extruded Bars, Rods, Wire, Shapes and Tubes.

O. ASTM F593 � Specification for Stainless Steel Bolts, Hex Cap Screws and Studs.

P. ASTM F594 � Specification for Stainless Steel Nuts.

Q. AWS D1.1 � Structural Welding Code � Steel.

R. AWS D2.4 � Standard Symbols for Welding, Brazing and Nondestructive Examination.

S. CGBSC � California Green Building Standards Code, 2010 edition.

T. FS FF�S�325 � Shield, Expansion, Nail, Expansion and Nail, Drive Screw (Devices, Anchoring, Masonry).

U. SSPC � Society for Protective Coatings. 1.5 DESIGN REQUIREMENTS A. Sustainable Design Requirements: Materials and products specified in this section are intended to contribute credits for LEED certification as specified in Division 1 Section “LEED Certification Requirements.” 1. Refer to and comply with LEED requirements specified in Division 1 “LEED Certification Requirements” section.



2. Potential credits include: a. MRc4 Recycled Content. b. MRc5 Regional Materials. c. EQc4.1 Low�Emitting Materials, Adhesives & Sealants. d. EQc4.2 Low�Emitting Materials, Paints & Coatings.

1.6 SUBMITTALS

A. Shop Drawings: Indicate materials, finishes, locations, sizes, profiles, attached hardware and fittings, reinforcing, anchorage, size and type of fasteners and details of fabricated metal work.

1. Include erection drawings, elevations and details showing cuts, copes, connections holes, threaded fasteners and welds.

2. Indicate welded connections using symbols conforming to AWS D2.4. Indicate shop and field welds with net weld lengths.

3. Indicate size and location of welded connectors, concrete inserts or masonry inserts where connectors or inserts are required to receive work.

B. Product Data: Submit manufacturer’s data for accessories.

C. Samples:

1. Galvanized Finish: Submit samples, minimum 3 x 3 inches in size, illustrating each type of zinc coating specified.

D. Welders' Certificates: Certify welders employed on the work have passed AWS qualification tests within the previous 12 months.

E. LEED Documentation: Submit product data as specified in Division 1 “LEED Certification Requirements” section for following LEED credits:

1. MRc4 Recycled Content. 2. MRc5 Regional Materials. 3. EQc4.1 Low�Emitting Materials, Adhesives & Sealants. 4. EQc4.2 Low�Emitting Materials, Paints & Coatings.

1.7 CREDENTIALS

A. Welders: Personnel qualified in accordance with AWS D1.1 within previous 12 months.



1.8 REGULATORY REQUIREMENTS A. Primers: Comply with requirements of CGBSC Section 5.504.4.3. 1.9 FIELD MEASUREMENTS

A. Verify that field measurements are as indicated on shop drawings. PART 2 PRODUCTS 2.1 MATERIALS

A. Steel Sections: ASTM A36.

B. Steel Plates and Bars: ASTM A36.

C. Steel Tubing: ASTM A500, Grade B.

D. Steel Pipe: ASTM A53, Grade B, Schedule 40.

E. Sheet Steel: ASTM A1008, cold rolled sheet steel; 24 gauge minimum thickness.

F. Galvanized Sheet Steel: ASTM A653, Grade A, G90; minimum 24 gauge thickness.

G. Extruded Aluminum Tubing, Angles and Channels: ASTM B221, 6061 alloy, T6 temper.

H. Aluminum Sheet: ASTM B209, 5005alloy, H34 temper.

2.2 ACCESSORIES

A. Fasteners: Stainless steel for aluminum�to�aluminum and aluminum�to�steel connections; plated carbon steel for steel�to�steel connections.

1. Screws:

a. Sheet Metal Screws: Self�tapping and drive screws as appropriate to application; length sufficient to penetrate through second surface minimum 1/4 inch.

b. Machine Screws: ANSI B18.6.3.

2. Bolts and Nuts: Regular hex head bolts with hex nuts except where indicated otherwise on Drawings; no upset threads permitted

a. Plated Carbon Steel: ASTM A307; length. Grade A.

b. Stainless Steel: ASTM F593 and ASTM F594.



3. Washers:

a. Plain Washers: ANSI B18.22.1.

b. Lock Washers: Helical, spring type, carbon steel, ANSI B18.21.1.

4. Expansion Bolts:

a. Wedge Type: FS FF�325(3), Group II, Type 4; wedge type expansion anchor; size as noted on Drawings; ITW Ramset/Red Head “Trubolt+” Seismic Wedge, Hilti Corp. “Kwik�Bolt TZ,” or equal product substituted under provisions of Division 1.

b. Sleeve Type: Size as noted on Drawings; Hilti Corp. Sleeve Anchor, ITW Ramset/Redhead Dynabolt Sleeve or equal product substituted under provisions of Division 1.

B. Welding Materials: AWS D1.1; type required for materials being welded.

C. Welded Stud Connectors: Shear type connectors in compliance with AWS D1.1; Nelson Studs; size as indicated on Drawings.

D. Shop and Touch�Up Primer for Carbon Steel: SSPC 15, Type I; red oxide; VOC content not to exceed 100g/L.

E. Touch�up Primer for Galvanized Surfaces: SSPC 20, Type I; inorganic; zinc rich; VOC content not to exceed 340 g/L.

F. Protective Back Coating: SSPC Paint 12; cold�applied asphalt mastic; inert type; non�corrosive; compounded for 15 mil dry thickness.

G. Non�Shrink Grout: Premixed high�strength, non�shrink, non�ferrous grout requiring only addition of water at site; Master Builder’s “Masterflow” 928 Grout or equal product substituted under provisions of Division 1.

2.4 FABRICATION

A. Fabricate items true to shape, size and tolerances indicated on Drawings and on final reviewed shop drawings with shearing, punching, bending, forming and other operations necessary to complete work.

B. Fit and shop assemble items in largest practical sections for delivery to site.

C. Fabricate units complete or in largest practical sections before galvanizing.

D. Fabricate anchorage and related components of same material and finish as metal fabrication, except where specifically noted otherwise.

1. Provide anchors, bolts, and miscellaneous fasteners necessary to fasten work in place.



2. Provide miscellaneous fasteners, brackets and framing as indicated or as necessary to complete installation.

E. Fabricate items with joints tightly fitted and secured. Make exposed joints butted tight, flush and hairline.

F. Fabricate items with straight lines, square corners or smooth bends and free from twists, kinks, warps, dents and other imperfections.

1. Straighten work bent by shearing or bunching.

2. Provide smooth finish and well�defined lines and arises on exposed surfaces of completed work.

G. Form assemblies and supports to exclude water.

1. Fabricate items in manner that will provide for expansion and contraction, prevent shearing of fasteners, ensure rigidity and provide close fitting of sections.

2. Provide gauge and assembly to ensure sufficient strength to prevent distortion during shipping, handling, installing and under severe service conditions.

3. Prepare items to receive hardware; ensure components are properly detailed and have proper clearances.

4. Drill holes for bolts and screws. Conceal fasteners where possible.

5. Dress exposed edges smooth; ease to small uniform radius.

H. Perform shop welding in accordance with applicable requirements of AWS D1.1.

1. Weld interior permanent connections in ferrous metal items unless indicated otherwise.

2. Weld behind finishes surfaces wherever possible.

3. Grind exposed welds smooth and flush with adjacent finished surfaces.

4. Remove welding spatter, flux, slag and oxides from finished surfaces.

I. Complete provisions for bolted, screwed and riveted connections in shop unless otherwise indicated.

1. Evenly space exposed heads.

2. Bolts:

a. Countersink bolt heads; finish smooth and flush.

b. Provide washers under heads and nuts bearing on wood.



c. Use beveled washers where bearing is on sloped surfaces.

d. Draw nuts tight; prevent loosening of permanent connections by nicking threads.

3. Screws: Use flat head type screws. Countersink; fill screw slots and finish smooth and flush.

4. Rivets: Center and countersink heads; machine�drive tight and finish flush and smooth.

2.5 FINISHES

A. Clean surfaces of rust, scale, dirt, grease, and foreign matter prior to finishing.

1. Where hand cleaning methods are not adequate, clean in accordance with SSPC�SP1, SSPC�SP2, SSPC�SP�6 or SSPC�SP7 as required.

2. Completely remove burrs, rough spots and pitting from normally exposed ferrous metal items.

B. Painting:

1. Do not prime surfaces in direct contact bond with concrete and where field welding is required.

2. Apply prime paint materials in accordance with paint manufacturer’s instructions and recommendations.

3. Permit thorough drying before shipment.

4. Spot paint abrasions and field connections after assembly.

5. Galvanizing Repair: Apply to minimum 2 mil dry film thickness.

6. Prime Paint: Apply to minimum 1.5 mil dry film thickness.

7. Protective Back Coating for Protection of Dissimilar Materials: Apply to minimum 15 mil dry film thickness.

C. Galvanizing:

1. Hot�dip galvanize products after fabrication in accordance with ASTM A123 or ASTM A153 as applicable.

2. Mark products with name of galvanizer, applicable ASTM designation and weight of zinc coating.

3. Galvanize fabricated items complete or in largest practicable sections.

4. Galvanize to the following minimum weights:



a. Items totally concealed from view: Minimum 2.0 oz/ square foot.

b. Items exposed to view: Minimum 1.1 oz/square foot.

5. Wash�prime galvanized items to be painted within six hours of galvanizing.

6. Touch�up galvanized and pre�galvanized items with specified primer.

D. Anodizing:

1. Clean and texture aluminum surface to medium matte finish by treating surface with sodium hydroxide.

2. Apply clear anodic coating by immersing surface in sulfuric acid solution and passing direct electric current through aluminum and surface to produce minimum 0.7 mil thick oxide film.

E. Finish Schedule:

1. Interior Ferrous Metal Items:

a. Concealed: Clean, chemically etch and shop�apply one coat primer.

b. Exposed: Clean, treat with hot phosphate, chemically etch and shop�apply one coat primer.

2. Exterior Ferrous Metal Items:

a. Concealed: Clean and hot�dip galvanize to specified standards.

b. Exposed: Clean, hot�dip galvanize to specified standards, chemically etch and shop�apply one coat primer.

3. Interior and Exterior Aluminum Items:

a. Concealed: Mill finish.

b. Exposed: AA�M12C22A41; non�specular mechanical finish as fabricated; chemically etched to fine matte finish; Class I clear anodized coating minimum 0.7 mils thick.

4. Hardware Including Fasteners: Finish to match item fastened.

F. Back paint concealed metal surfaces in contact with cementitious materials or dissimilar metals with protective backing paint to minimum dry film thickness of 15 mil.

2.6 SOURCE LABORATORY CONTROL

A. Shop testing and inspections will be performed by Owner’s Testing Laboratory.



B. Provide free access to work at all times and cooperate with inspectors and laboratory personnel.

C. Testing Laboratory will:

1. Continuously inspect shop welding of load bearing fabricated items.

2. Ultrasonically test complete penetration welds in load bearing fabricated items. PART 3 EXECUTION 3.1 EXAMINATION

A. Verify that field conditions are acceptable and are ready to receive work.

B. Verify that setting conditions and dimensions are correct.

C. Verify that solid blocking and backing has been provided at framed and furred conditions.

D. Do not begin installation until unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Obtain Architect's authorization prior to site cutting and making adjustments not scheduled.

B. Clean and strip site primed steel items to bare metal where site welding is scheduled.

C. Make provision for erection loads with temporary bracing. Keep work in alignment.

D. Supply items required to be cast into concrete with setting templates to appropriate sections.

3.3 INSTALLATION

A. Install metal fabrications as indicated on Drawings and final reviewed shop drawings.

B. Install items plumb and level, accurately fitted, free from distortion or defects.

C. Perform field welding only where indicated on final reviewed shop drawings in accordance with AWS D1.1.

D. Install anchors and fasteners of sizes, types and spacing indicated and as required to fasten work rigidly in place.

1. Embed anchors in concrete as work progresses.

2. Do not cinch fastenings through finish alone without spacer washers.



3. Install concrete inserts or pre�drilled expansion bolts for fastening items into concrete.

4. Fasten work tightly to prevent rattle or vibration except where expansion and contraction tolerances are required.

E. Set frames, plates, sills, bolts and similar items on non�shrink grout mixed in accordance with manufacturer’s instructions.

3.4 FIELD QUALITY CONTROL

A. Field inspection and testing will be performed by Owner’s Testing Laboratory.

B. Provide free access to work at all times and cooperate with laboratory personnel.

C. Testing Laboratory will:

1. Continuously inspect welding of load bearing fabrications in field.

2. Ultrasonically test full penetration welds of load bearing fabrications.

3.5 ADJUSTING

A. After installation, touch�up field welds, scratched and damaged surfaces with primer.

3.6 CLEANING

A. Remove weld spatter, excess sealant, dirt and other foreign materials from metal fabrications.

B. Remove machining oil, silicone and other foreign materials from surfaces of galvanized steel and stainless steel manufactured items.

C. Perform cleaning with materials and methods that will not damage finish.

3.7 PROTECTION OF INSTALLED WORK

A. Protect work of this section from defacement or damage to profile, shape or finish until final acceptance.

3.8 SCHEDULE

A. Provide and install items listed in schedule and shown on Drawings with anchorage and attachments necessary for installation.

B. Schedule is list of principal items only. Refer to Drawing details for items not specifically scheduled.

C. Steel Columns Not Included in Section 05 12 00: Prime paint finish unless enclosed; galvanize finish where exposed to exterior.



D. Ledge and Shelf Angles, and Channel angles and Plates Not Attached to Structural Framing: Prime paint finish.

E. Support Posts and Angle Brackets for Countertops: Prime paint finish.

END OF SECTION





04/03/2012 05 51 11�1 Metal Stairs with

Concrete Filled Treads

SECTION 05 51 11

METAL STAIRS WITH CONCRETE FILLED TREADS

PART 1 GENERAL


A. Steel stair system with sheet steel pans to receive concrete fill at treads and landings.

B. Steel stair frame of structural steel sections.

C. Plates, angles, hangers and struts for securing stairs to building structure.

D. Related railings.

E. System design. 1.2 RELATED SECTIONS

A. Section 03 20 00 � Concrete Reinforcing: Mesh reinforcing for steel pans.

B. Section 03 30 00 � Cast�In�Place Concrete: Cast�in�place concrete walls; concrete fill for steel pan treads and landings.

C. Section 03 35 00 � Concrete Finishing: Mechanical finishing concrete fill for treads and

landings.

D. Section 03 35 69 � Concrete Sealers and Hardeners: Topical finish applied to concrete fill at reads and landings of stairs.

E. Section 05 51 33 � Metal Ladders: Roof access ladders; elevator pit ladders.

F. Section 09 90 00 – Painting and Coating: Field finish painting of stair stringers. 1.3 REFERENCES

A. ASTM A36 � Specification for Carbon Structural Steel.

B. ASTM A53 � Specification for Pipe, Steel, Black and Hot Dipped, Zinc�Coated, Welded and Seamless Steel Pipe.

C. ASTM A123 � Specification for Zinc (Hot�Dip Galvanized) Coatings on Iron and Steel

Products.

D. ASTM A307 � Specification for Carbon Steel Bolts and studs, 60,000 PSI Tensile Strength.




E. ASTM A500 � Specification for Cold�Formed Welded and Seamless Carbon Steel

Structural Tubing in Rounds and Shapes.

F. ASTM A1011 � Specification for Steel, Sheet and Strip, Hot�Rolled, Carbon, Structural, High�Strength Low�Alloy and High�Strength Low�Alloy with Improved Formability.

G. AWS D1.1 � Structural Welding Code.

H. CBC � California Building Code, 2010 edition.

I. CGBSC – California Green Buildings Standards Code.

J. NAAMM � National Association of Architectural Metal Manufacturers.

K. SSPC � Society for Protective Coatings.

1.5 SYSTEM DESCRIPTION

A. Metal Stairs with Concrete Filled Treads: Metal stair system with structural steel frame, steel plates, angles, hangers and struts for securing frame to building structure, sheet metal pans to receive concrete fill at treads and landings and related handrails and guardrails. Concrete fill provided under separate section.

1.6 DESIGN REQUIREMENTS A. Sustainable Design Requirements: Materials and products specified in this section are intended to contribute credits for LEED certification as specified in Division 1 Section “LEED Certification Requirements.” 1. Refer to and comply with LEED requirements specified in Division 1 “LEED Certification Requirements” section. 2. Potential credits include: a. MRc4 Recycled Content. b. MRc5 Regional Materials. c. EQc4.2 Low�Emitting Materials, Paints & Coatings. 1.7 PERFORMANCE REQUIREMENTS

A. Design and fabricate stair assembly to:

1. Support minimum live load of 100 lb/sq ft with deflection of stringer not to exceed 1/360 of span.




2. Support minimum 300 pound concentrated load at center of any pan with deflection of stringer not to exceed 1/360 of span.

3. Resist lateral load equivalent to 25 percent of live load plus dead load with lateral

deflection not to exceed 1/8 inch horizontal displacement. B. Design and fabricate railing assemblies and attachments to:

1. Withstand lateral force of 200 lbs at any point without damage or permanent set when tested in accordance with ASTM A935.

2. Withstand minimum 50 pounds/linear foot applied horizontally to top rail without

damage or permanent set when tested in accordance with ASTM A935. 1.8 SUBMITTALS

A. Work of this section is designated on Drawings as requiring deferred approval by City Building Department, submit shop drawings and structural calculations, product data, samples, fabricator’s certifications and LEED documentation allowing sufficient time for Architect's review and for approval by City Building Department prior to fabrication and installation.

1. Design responsibility and costs associated with design and engineering for deferred approval work rests solely with Contractor. 2. Structural calculations submitted shall be stamped and signed by structural engineer employed by Contractor and registered in State of California. 3. Deferred approval submittals must be complete and must be reviewed and accepted by Architect and Architect’s consultants prior to submittal to City Building Department. 4. Architect will submit final reviewed documents to City Building Department

for their review.

B. Shop Drawings and Design Calculations: Submit shop drawings and design calculations stamped and signed by Professional Engineer registered in State of California.

1. Indicate profiles, sizes, connection attachments, reinforcing, anchorage,

openings, size and type of fasteners and accessories.

2. Include layout and erection drawings, elevations and details where applicable.

3. Include setting and template drawings for items built into structure.

4. Show splices and attachments for railings.




5. Indicate welded connections using standard AWS welding symbols. Indicate net weld lengths.

6. Submit calculations substantiating that design complies with design criteria and

necessary structural and safety requirements. B. Product Data: Submit manufacturer’s product data for handrail brackets and safety nosings. C. Samples:

1. Rails: Submit samples, minimum 12 inches long, of each type of rail to be used illustrating each material, profile, size and finish.

2. Handrail Brackets: Submit samples of each handrail bracket to be used

illustrating each material, profile, size and finish used. D. Fabricator's Certificates: Certify that welders employed on work have been AWS qualified within the previous 12 months.

E. LEED Documentation: Submit product data as specified in Division 1 “LEED Certification Requirements” section for following LEED credits:

1. MRc4 Recycled Content. 2. MRc5 Regional Materials. 3. EQc4.2 Low�Emitting Materials, Paints & Coatings.


A. Stair Classification: Comply with NAAMM Metal Stairs Manual for Commercial Class stairs.

B. Railings: Comply with NAAMM Pipe Railing Systems Manual.

1.10 CREDENTIALS

A. Welders: AWS qualified. 1.11 REGULATORY REQUIREMENTS A. Stairs:

1. Stairways: Comply with requirements of CBC Sections 1009 and 1133B.4. 2. Striping for Visually Impaired: Comply with requirements of CBC Section 1133B.4.4.




3. Slip Resistance of Interior Exposed Concrete Walking Surfaces: Comply with requirements of CBC Section 1124B.1.

B. Railings: 1. Guardrails: Comply with requirements of CBC Section 1013. 2. Handrails: a. Required Locations: Comply with requirements of CBC Section 1009.12. b. Configuration: Comply with requirements of CBC Section 1133B.4.1. C. Primers: Comply with requirements of CGBSC Section 5.504.4.3. 1.12 DELIVERY, STORAGE AND HANDLING

A. Deliver products to site, store, handle and protect in accordance with fabricator’s instructions and recommendations.

B. Deliver items requiring anchorage built into structure with setting diagrams, templates,

measurements and instructions.

C. Protect components from damage at shop, in transit and during storage at job site.

D. Store components on site in clean dry location away from uncured concrete and masonry.

1. Stack in manner that will prevent bending.

2. Maintain protective wrapping applied during transit in place until installation.

1.13 FIELD MEASUREMENTS

A. Verify that field measurements are as indicated on shop drawings prior to fabrication. 1.14 COORDINATION

A. Coordinate fabrication and installation of steel pan stairs with installation of concrete fill specified under Section 03 30 00 – Cast�In�Place Concrete.

B. Coordinate installation of safety nosings with installation of concrete fill specified under

Section 03 30 00 – Cast�In�Place Concrete.

C. Coordinate fabrication and installation of steel pan stairs with installation of specified under Section 05 12 00 – Structural Steel Framing.




D. Coordinate fabrication and installation of railings with installation of metal framed walls specified under Section 05 40 00 – Cold Formed Metal Framing.

PART 2 PRODUCTS

2.1 MATERIALS

A. Steel Sections, Shapes, Plates and Bars: ASTM A36.

B. Steel Pipes: ASTM A53, Grade B.

C. Steel Tubing: ASTM A500, Grade B.

D. Sheet Steel: ASTM A1011, Grade 36.

E. Bolts, Nuts, and Washers: ASTM A307, Grade A; galvanized to ASTM A153.

F. Exposed Mechanical Fastenings: Flush countersunk screws or bolts; unobtrusively located; consistent with design of structure.

G. Welding Materials: AWS D1.1; type required for materials being welded.

H. Shop and Touch�Up Primer for Carbon Steel: SSPC 15, Type 1, red oxide; VOC

compliant. 2.2 MANUFACTURED ITEMS A. Handrails Brackets: Cast malleable iron; curved for round rail; Julius Blum & Co. #382, R&B Wagner, Inc. #1701�2, or equal product substituted under provisions of Section 01 25 11. C. Safety Nosings: Aluminum base with non�slip abrasive fill; 2�1/4 inches wide; 1/4 to 5/16 inch thick; extruded anchors; contrasting fill color as selected by Architect; American Safety Tread Co., Inc. Type 24, Balco, Inc. H�255 Single Component or equal product substituted under provisions of Division 1. 2.3 FABRICATION

A. Fabricate stair assemblies in accordance with NAAMM Metal Stairs Manual and with NAAMM Pipe Railing Systems Manual to arrangement indicated on Drawings.

B. Provide steel beams, stringers, landing platforms, cover plates, hanger rods, supports,

cross�bracing of landing platforms, stiffeners, anchors, clips, angles and fastening devices.

C. Fit and shop assemble sections in largest practical sizes, for handling through building

openings. Minimize field connections.




D. Use metal clean and free from mill scale, rust and pitting. Perform cutting, punching,

drilling and tapping for attachment to other work.

E. File or grind smooth parts exposed to view; remove weld marks and leave free of noticeable fabrication marks.

F. Miter corners and angles of members unless otherwise indicated or where not required

by standard practice.

G. Fabricate members true to length so assembly is accomplished without fillers. Fabricate so that finishes members are free of bends, twists, open joints and projecting edges at corners of connections.

H. Miter, cope and block to produce tight hairline joints.

I. Mechanical Fastening:

1. Use proper size bolts; draw nuts tight with upset threads.

2. Bolts in exposed work shall have not more than 1/8 inch of thread projecting

beyond nut.

J. Welding:

1. Sequence welding to minimize distortion and heat stresses.

2. Weld by shielded electric arc process in accordance with AWS.

3. Continuously weld along entire contact area except where spot welding is permitted. Do not spot weld surfaces exposed to view.

4. Grind exposed welds flush and smooth with adjacent finished surface. Ease

exposed edges to small uniform radius.

K. Supply components required for anchorage of fabrications.

1. Fabricate anchors and related components of same material and finish as fabrication, except where specifically noted otherwise.

2. Accurately form components required for anchorage of stairs and landings and

railings to each other and to building structure.

L. Fabricate stairs with treads and landings of metal pan construction ready to receive reinforcing and concrete.

1. Form treads with closed risers from 1 piece minimum 12 gauge steel sheet; form

with nosing and sanitary cove as indicated.




2. Form platforms at landings from minimum 10 gauge steel sheet; reinforce with

“T” shaped stiffeners spaced not over 28 inches oc.

3. Form stringers from rolled steel sections. M. Form railing assembly and wall rails with steel tube sections of sizes and to profiles and configurations indicated on Drawings. 1. Form rails with formed fittings, covers, and fabricated bends for welded connections. 2. Fabricate railings in longest practical lengths with provisions for expansion and contraction. 3. Ensure no handrail exceeds 1�1/2 inch outside diameter. 4. Grind exposed welds smooth and flush with adjacent finished surfaces for Type 2 in accordance with NAAMM Pipe Railing Systems Manual. 2.4 FINISHES

A. Prepare surfaces prior to finishing.

1. Clean surfaces of rust, scale, grease and foreign matter using suitable tools in accordance with SSPC SP�1.

2. Remove oil and grease with suitable solvents in accordance with SSPC SP�1.

B. Prime paint steel surfaces.

1. Do not prime surfaces in direct contact bond with concrete or where field welding

is required. Keep shop coat minimum 2 inches away from surfaces and edges requiring field welding.

2. Apply primer in dry weather or under cover. Do not apply primer when ambient

temperature is below 40 degrees F.

3. Stir primer and keep at and edges uniform consistency during application.

4. Do not thin primer in excess of manufacturer’s recommendations.

5. Brush or spray apply primer in accordance with manufacturer’s directions to dry film thickness of not less than 1.5 mils.

6. Allow primer to dry before handling or shipping.




PART 3 EXECUTION

3.1 EXAMINATION

A. Examine installed work of other trades to determine acceptability for installation. Verify that such work is complete to point where work of this section may begin and is acceptable for product installation in accordance with fabricator’s instructions and recommendation.

B. Verify dimensions, tolerances and method of attachment with other work.

C. Do not begin installation until unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Clean and strip primed steel items to bare metal where site welding is required.

B. Supply items required to be cast into concrete with setting templates, to appropriate sections.

3.3 INSTALLATION

A. Install stair components in accordance with final reviewed shop drawings.

B. Install items plumb and level, accurately fitted, free from distortion or defects.

C. Provide anchors, plates, angles, hangers, and struts required for connecting stairs to structure.

D. Allow for erection loads, and for sufficient temporary bracing to maintain true alignment

until completion of erection and installation of permanent attachments.

E. Field weld components indicated on shop drawings. Perform field welding in accordance with AWS D1.1.

F. Field bolt and weld to match shop bolting and welding. Conceal bolts and screws

wherever possible. Where not concealed, use flush countersunk fastenings.

G. Mechanically fasten joints butted tight, flush and hairline. Grind welds smooth and flush.

H. Obtain Architect's authorization prior to site cutting or making adjustments not

scheduled.

I. Attach railings to stringers by welding; attach handrail brackets to railings with minimum 2 mechanical fasteners per bracket.




J. Equally space handrail brackets for wall mounted handrails as required by design criteria but not more than 60�inch centers between end brackets. Attach brackets with mounting bolts to concrete and to wood framing and blocking.

K. After erection, touch�up welds, abrasions and surfaces not primed, except surfaces to

be in contact with concrete. Use primer consistent with shop primer.

L. Coordinate installation of reinforcing and concrete at treads and landings. Ensure reinforcing is welded to tread pans.

M. Coordinate installation of contrasting strips into treads and landings in accordance with

CBC Section 1133B.4.4. Ensure strips are cast into upper approach and lower tread of interior stairs.

1. Ensure contrasting strips are installed aligned, plumb, level and flush with

adjacent surfaces and rigidly anchored to substrate.

2. Ensure contrasting strips are set with square cut ends aligned between steps and equally spaced from ends of steps.

N. Coordinate finishing of concrete fill. Ensure finished surfaces are slip�resistant in

accordance with CBC Section 1124B.1.

O. Coordinate application of field paint finish to exposed steel. 3.4 ERECTION TOLERANCES

A. Maximum Variation from Plumb: 1/4 inch per story, non�cumulative.

B. Maximum Offset from True Alignment: 1/4 inch. 3.5 PROTECTION OF INSTALLED WORK

A. After installation, protect stairs from damage by other construction operations until Substantial Completion.

END OF SECTION


04/03/2012 05 51 33�1 Metal Ladders

SECTION 05 51 33

METAL LADDERS

PART 1 GENERAL


A. Aluminum roof access ladders. 1.2 RELATED SECTIONS

A. Section 03 30 00 � Cast�In�Place Concrete: Elevator pit construction; floor slabs.

B. Section 05 40 00 � Cold Formed Metal Framing: Load bearing and non�load bearing stud framing and backing.

C. Section 07 72 33 � Roof Hatches: Roof hatches and associated safety railing systems.

1.3 REFERENCES

A. ANSI A14.3 � Safety Requirements for Fixed Ladders.

B. ASTM B221 � Aluminum Alloy Extruded Bars, Rods, Wire, Shapes and Tubes.

C. FS FF�S�325 � Shield, Expansion, Nail, Expansion and Nail, Drive Screw (Devices, Anchoring, Masonry).

G. SSPC � Society for Protective Coatings.

1.4 DESIGN REQUIREMENTS A. Sustainable Design Requirements: Materials and products specified in this section are intended to contribute credits for LEED certification as specified in Division 1 Section “LEED Certification Requirements.” 1. Refer to and comply with LEED requirements specified in Division 1 “LEED Certification Requirements” section. 2. Potential credits include: a. MRc4 Recycled Content. b. MRc5 Regional Materials.


04/03/2012 05 51 33�2 Metal Ladders

1.5 SUBMITTALS A. Shop Drawings: Submit shop drawings for ladders indicating sizes, configurations, and connection details.

1. Include plans, elevations, sections and details of components and their connections.

2. Include templates for anchors and bolts.

3. Provide reaction loads for each hanger and bracket.

B. Product Data: Submit manufacturer's data on aluminum ladders and ladder

components.

C. LEED Documentation: Submit product data as specified in Division 1 “LEED Certification Requirements” section for following LEED credits: 1. MRc4 Recycled Content. 2. MRc5 Regional Materials.


A. Roof Access Ladders: Comply with ANSI A14.3. 1.7 CREDENTIALS A. Aluminum Ladder Manufacturer: Company specializing in manufacture of aluminum access ladders with minimum 5 years documented experience with sufficient production capacity to produce required units. C. Installer: Company specializing in installation of aluminum ladders with minimum 3 years documented experience. 1.8 DELIVERY STORAGE AND HANDLING

A. Deliver products to site, store, handle and protect in accordance with manufacturer’s instructions and recommendations.

B. Deliver items requiring anchorage built into structure with setting diagrams, templates,

measurements and instructions.

C. Protect components from damage at shop, in transit and during storage at job site. 1.9 FIELD MEASUREMENTS

A. Verify that field measurements are as indicated on shop drawings.


04/03/2012 05 51 33�3 Metal Ladders

1.10 WARRANTY

A. Manufacturer's Warranty: Warrant aluminum ladders against defects in material and workmanship for period of 5 years from date of Substantial Completion.

PART 2 PRODUCTS

2.1 MANUFACTURERS

A. O'Keefe's Inc.: 1. Floor�to�Roof Access Ladders: Model #500 Standard Duty Channel Rail Fixed Access Ladder. 2. Roof�to�Roof Access Ladders: Model #503 Tubular Rail High Parapet Access Ladder with Platform and Return. B. Manufacturer Offering Acceptable Equivalent Product: Royalite Manufacturing, Inc. C. Substitutions: Under provisions of Division 1. 2.2 COMPONENTS A. Aluminum Ladders: Constructed of extruded aluminum conforming to ASTM B221, 6063 ally, T5 temper; surfaces smooth and free of burrs; mill finish.

1. Rungs: Serrated; minimum 1,500 pound load capacity; secured to rails with self�locking stainless steel fasteners; 1�1/4 inch square.

2. Rails:

a. Floor�to�Roof Access Ladders: 3 x 1 x 1/8 inch thick channel rails.

b. Roof�to�Roof Ladders: Tubes assembled from interlocking aluminum

channel and cover plate extrusions; minimum 1/8 inch wall thickness; 3 inches wide.

3. Brackets: Fabricated from 2 x 3/16 inch flat bar; secured to rails with stainless

steel fasteners.

a. Top and Intermediate Wall: "U" profile.

b. Bottom Wall: Manufacturer's alternate bottom support; "U" profile with diagonal struts.

4. Platforms: 1 x 3 x 1/8 inch aluminum channel frame with 1�1/4 x 4�1/8 inch

serrated aluminum planks.


04/03/2012 05 51 33�4 Metal Ladders

5. Roofover Rail Extension Grab Rails: Fabricated from 1�1/4 inch square serrated tubing.

B. Accessories:

1. Fasteners:

a. To Steel Framing: Stainless steel self�tapping screws; point appropriate to thickness of framing; #12 x length sufficient to penetrate through second surface by minimum 1/4 inch. b. To Concrete: FS FF�S�325, Group II, Type 4, Class 1; stainless steel stud type expansion anchors with single piece wedge; 3/8 inch diameter by length sufficient for 2 inch embedment into concrete; Hilti, Inc. "Kwik Bolt TZ Expansion Anchor, ITW Ramset/Red Head "Trubolt+" Seismic Wedge Anchors or equal product substituted under provisions of Division 1.

2.3 FABRICATION A. Fabricate aluminum roof access ladders to sizes and configurations indicated on Drawings with smooth surfaces free of burrs. B. Floor�to�Roof Access Ladders: Fabricate 18�3/8 inch wide rail�to�rail with rails extending from floor slab to 8 inches beyond top of adjacent roof surface.

C. Roof�to�Roof Access Ladders: Fabricate 18�3/8 inch wide rail�to�rail with rails extending from 4 inches above roofs to 3'�6" above parapet of high roof with platform 5 inches above parapet and grab bars at 12 inches oc between platform and top of rails.

D. Fabricate ladders with rungs equally spaced at 12 inches oc; secure to rails with

stainless steel self�tapping hex�head screws. E. Fabricate wall brackets for roof access ladders to space centerline of ladder rungs 7

inches minimum from supporting wall. 1. Secure to rails with stainless steel round head machine screws; drill for wall

anchors. 2. Locate wall brackets at top and at intermediate points not exceeding 10'�0" oc as

required to support ladder. 3. Locate wall�mounted brackets at bottom of floor�to�roof and roof�to�roof access

ladders with bottom of bracket minimum 9 inches above top of adjacent horizontal surfaces. Coordinate with roofing installation.


04/03/2012 05 51 33�5 Metal Ladders

PART 3 EXECUTION

3.1 EXAMINATION

A. Examine installed work of other trades to determine acceptability for installation. Verify that such work is complete to point where work of this section may begin and is acceptable for product installation in accordance with manufacturer’s instructions and recommendations.

B. Verify that support framing and backing has been installed and are properly located

and secured.

C. Verify that wall and ceiling finishes are installed and cured.

D. Do not begin installation until unsatisfactory conditions have been corrected. 3.2 INSTALLATION

A. Install access ladders in accordance with manufacturer's instructions and recommendations and with final reviewed shop drawings.

B. Install items plumb and level, accurately fitted and free from distortion or defects. C. Anchor access ladders to wall structure. Secure to wall framing with screws; secure to

concrete walls with expansion anchors.

END OF SECTION


04/03/2012 05 51 33�6 Metal Ladders



04/03/2012 05 73 93�1 Decorative Metal Roof Screens

SECTION 05 73 93

DECORATIVE METAL ROOF SCREENS

PART 1 GENERAL 1.1 SECTION INCLUDES

A. Decorative roof equipment screens with metal wall panel facing.

B. Decorative gates within roof equipment screens. 1.2 RELATED SECTIONS

A. Section 05 12 00 – Structural Steel Framing: Structural framing supporting roof screens.

B. Section 09 96 54 – High Performance Urethane Coatings: Field finishing steel roof

equipment framing surfaces. 1.3 REFERENCES A. AAMA 621 � Voluntary Specification for High Performance Organic Coatings on Coil Coated Architectural Hot�Dipped Galvanized (HDG) and Zinc�Aluminum Coated Steel Substrates. B. ANSI B18.21.1 � Lock Washers. C. ANSI B18.22.1 � Plain Washers. D. ASTM A36 � Specification for Carbon Structural Steel. E. ASTM A123 � Specification Zinc (Hot�Dip Galvanized) Coatings on Iron and Steel Products. F. ASTM A153 � Specification for Zinc Coating (Hot�Dip) on Iron and Steel Hardware. G. ASTM A307 � Specification for Low�Carbon Steel Externally and Internally Threaded Fasteners. H. ASTM A500 � Specification for Cold Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes. I. ASTM A653 – Specification for Steel, Sheet and Strip, Heavy�Thickness Coils Carbon, Hot Rolled. J. ASTM A755 – Specification for Sheet Steel, Metallic Coated by the Hot�Dip Process and Prepainted by the Coil�Coating Process for Exterior Exposed Building Products.



K. ASTM E72 – Test Methods of Conducting Strength Tests of Panels for Building Construction. L. AWS D1.1 � Structural Welding Code. M. CGBSC � California Green Building Standards Code, 2010 edition. N. SSPC � Society for Protective Coatings. 1.4 SYSTEM DESCRIPTION

A. Decorative Roof Equipment Screens: Decorative mechanical screen system consisting of prefinished metal wall panels with related trim fastened to welded tube steel framing secured to structural steel framing. Steel tube framing primed for field applied high performance urethane finish. Structural steel framing and high performance urethane finish specified under separate sections.

B. Decorative Gates Within Roof Equipment Screens: Manually operated swinging gates

consisting of prefinished metal wall panels and trim fastened to welded tube steel frame supported of tube steel gate posts with heavy duty steel hinges and equipped with tabs for padlock eyes. Steel frame, hinges and padlock eyes primed for field applied high performance urethane finish. High performance urethane finish specified under separate section.

1.5 DESIGN REQUIREMENTS

A. Sustainable Design Requirements: Materials and products specified in this section are intended to contribute credits for LEED certification as specified in Division 1 Section “LEED Certification Requirements.” 1. Refer to and comply with LEED requirements specified in Division 1 “LEED Certification Requirements” section. 2. Potential credits include: a. MRc4 Recycled Content. b. MRc5 Regional Materials. 1.6 SUBMITTALS

A. Shop Drawings: Indicate plan layouts and elevations with materials, profiles, sizes and spacing of components, anchorage and connections and hardware.

1. Framing:

a. Include erection drawings, elevations and details showing cuts, copes, connections holes, threaded fasteners and welds.



b. Indicate welded connections using symbols conforming to AWS D2.4. Indicate shop and field welds with net weld lengths.

2. Metal Panel Facing: a. Include full elevations showing openings and penetrations. b. Include details of each condition of installation and attachment. Provide details at minimum scale of 1�1/2 inch per foot of trim, flashings and closures. c. Indicate points of supporting structure that must coordinate with metal panel assembly installation.

d. Indicate details of fastening including clip spacing supported by load span tables that include evaluation of clip and panel side joint interaction.

B. Product Data: Submit manufacturer’s product data for components and accessories. Include data indicating compliance with performance requirements.

C. Samples:

1. Wall Panel Profile: Submit full width samples, minimum 12 inches in length,

illustrating each specified wall panel profile.

2. Wall Panel Finish: Submit samples, minimum 3 x 4 inches in size, of specified finish applied to sheet metal illustrating specified color.

3. Wall Panel Fasteners: Submit samples of each type of fastener; identify use.

4. Wall Panel Clips: Submit samples of each type of concealed clips.

D. LEED Documentation: Submit product data as specified in Division 1 “LEED Certification Requirements” section for following LEED credits:

1. MRc4 Recycled Content. 2. MRc5 Regional Materials.

1.7 PERFORMANCE REQUIREMENTS A. Structural Performance: Wall panel sections to withstand effects of wind loads and stresses within limits and under conditions indicated per ASTM E72. 1. Wind Loads: As determined based on uniform pressure, importance factor, exposure category and basic wind indicated on Drawings. 2. Limits of Deflection: Not to exceed L/180 deflection of panel perimeter normal to place of wall with no evidence of failure.



1.8 QUALITY ASSURANCE A. Source Limitations: Provide metal wall panels and panel accessories from single manufacturer. 1.9 CREDENTIALS

A. Framing: 1. Fabricator: Company specializing in fabricating welded tube steel framing with minimum 3 years documented experience. 2. Installer: Company specializing in installing welded tube framing with minimum 3 years documented experience. B. Metal Panel Facing: 1. Manufacturer: Company specializing in manufacture of sheet metal wall panels with minimum 10 years documented experience. 2. Installer: Company specializing in installation of sheet metal wall panels with minimum 5 years documented experience. 1.10 REGULATORY REQUIREMENTS A. Primers: Comply with requirements of CGBSC Section 5.504.4.3. B. Sealant Products: Comply with requirements of CGBSC Section 5.504.4.1. 1.11 DELIVERY, STORAGE AND HANDLING

A. Deliver products to site, store, handle and protect in accordance with manufacturer’s instructions and recommendations.

B. Deliver wall panel materials in dry and undamaged condition; unload per

manufacturer’s instructions.

C. Examine wall panel materials for defects and damage in profile and finish. Remove defective material from site.

D. Store wall panel materials off ground under weatherproof coverings.

E. Stack preformed wall panel material to prevent twisting, bending or abrasion and to

provide ventilation. Slope metal sheets to ensure drainage.

F. Prevent contact with materials during storage that may cause discoloration or staining.

G. Do not overload structure with stored materials.



1.12 FIELD MEASUREMENTS

A. Verify that field measurements are as indicated on shop drawings. 1.13 COORDINATION

A. Coordinate installation of steel tube screen posts with installation of structural steel roof framing; ensure framing is properly located.

1.14 WARRANTY

A. Manufacturer’s Warranty: 1. Metal Wall Panel Assemblies: Furnish 2�year warranty against defects in materials and workmanship. Agree to repair or replace components that fail within 2 years from date of Substantial Completion. 2. Coil Coated Finish: Furnish 20�year warranty against fading, chalking, peeling, cracking, chipping or erosion to metal base of specified paint finish. Agree to repair or replace wall panels with evidence of deterioration of finish within 20 years of date of Substantial Completion.

PART 2 PRODUCTS

2.1 FRAMING COMPONENTS A. Materials:

1. Steel Tubing: ASTM A500, Grade B.

2. Steel Bar and Plate Stock: ASTM A36. B. Accessories: 1. Fasteners: Plated carbon steel for steel�to�steel connections.

a. Screws:

1) Sheet Metal Screws: Self�tapping and drive screws as appropriate to application; length sufficient to penetrate through second surface minimum 1/4 inch.

2) Machine Screws: ANSI B18.6.3.

b. Bolts and Nuts: ASTM A307, Grade A; regular hex head bolts with hex nuts except where indicated otherwise on Drawings; no upset threads permitted.



c. Washers:

1) Plain Washers: ANSI B18.22.1.

2) Lock Washers: Helical, spring type, carbon steel, ANSI B18.21.1.c.

2. Welding Materials: AWS D1.1; type required for materials being welded.

3. Galvanizing Repair: Single pack premixed ready�to�apply liquid organic zinc compound recommended by manufacturer for repair of hot�dipped galvanized surfaces; 221 g/L VOC content; 56 percent solids by volume; 92 percent metallic zinc content by weight in dry film; flat finish; light gray color; ZRC Worldwide ZRC® 221 Cold Galvanizing compound or equal product substituted under provisions of Division 1.

4. Touch�Up Primer for Galvanized Steel Surfaces: SSPC 20, Type I; inorganic;

zinc rich; VOC content not to exceed 340 g/L; compatible with finish specified

under Section 09 96 54.

5. Gate Hardware:

a. Hinges: Double weight steel concealed ball bearing prison hinges; 3 knuckle; swaged for mortise application; no holes for welded attachment; for doors weighing up to 800 pounds; 5 x 6 inches; 3 per gate leaf; factory primed finish; Stanley BB855. b. Locking Mechanisms: Custom fabricated tabs of flat steel plate with padlock eyes welded to each gate frame and locking gate post. C. Fabrication:

1. Fabricate framing for screens and gates to sizes and configurations shown on Drawings and in accordance with final reviewed shop drawings with shearing, punching, bending, forming and other operations necessary to complete work.

2. Fabricate as welded components in largest practical sections for delivery to site.

3. Fabricate anchorage and related components of same material and finish as framing, except where specifically noted otherwise.

a. Provide anchors, bolts, and miscellaneous fasteners necessary to fasten work in place.

b. Provide miscellaneous fasteners, brackets and framing as indicated or as necessary to complete installation.

4. Fabricate components with joints tightly fitted and secured. Make exposed joints flush and hairline.



a. Continuously seal joined pieces by continuous welds.

b. Grind exposed welds smooth and flush with adjacent finished surfaces.

c. Ease exposed edges to small uniform finish.

5. Fabricate components with straight lines, square corners and free from twists, kinks, warps, dents and other imperfections.

a. Straighten work bent by shearing or punching.

b. Provide smooth finish and well�defined lines and arises on exposed surfaces of completed work.

6. Form components to exclude water. Cap open ends of tube steel with filler plates set in and continuously welded to inside face of tubes.

7. Fabricate assemblies in manner that will provide for expansion and contraction, prevent shearing of fasteners, ensure rigidity and provide close fitting of sections. 8. Fabricate assemblies with members sized to ensure sufficient strength to prevent distortion during shipping, handling, installing and under severe service conditions. 9. Prepare components to receive fasteners and hardware; ensure components are properly detailed and have proper clearances.

a. Drill holes for bolts and screws. Conceal fasteners where possible. Dress exposed edges smooth; ease to small uniform radius.

10. Perform shop welding in accordance with applicable requirements of AWS D1.1.

a. Weld permanent connections in ferrous metal items unless indicated otherwise.

b. Weld behind finished surfaces wherever possible.

c. Grind exposed welds smooth and flush with adjacent finished surfaces.

D. Finishes:

1. Clean surfaces of rust, scale, dirt, grease, and foreign matter prior to finishing.

a. Where hand cleaning methods are not adequate, clean in accordance with SSPC�SP1, SSPC�SP2, SSPC�SP�6 or SSPC�SP7 as required.

b. Completely remove burrs, rough spots and pitting from normally exposed ferrous metal items.



2. Galvanizing:

a. Hot�dip galvanize framing components after fabrication in accordance with ASTM A123 or ASTM A153 as applicable.

b. Mark products with name of galvanizer, applicable ASTM designation and weight of zinc coating.

c. Galvanize fabricated items complete or in largest practicable sections.

d. Galvanize to minimum 1.1 oz/square foot.

e. Wash�prime galvanized items to be painted within six hours of galvanizing.

f. Touch�up galvanized items with cold galvanizing repair compound. 3. Prime Painting:

a. Shop prime galvanized surfaces.

b. Do not prime surfaces in direct contact bond with concrete and where field welding is required.

c. Apply prime paint materials in accordance with paint manufacturer’s instructions and recommendations.

d. Permit thorough drying before shipment.

e. Spot paint abrasions and field connections after assembly.

f. Prime Paint: Apply to minimum 1.5 mil dry film thickness. 2.2 FACING COMPONENTS A. Manufacturers:

1. Centria: “Concept Series” Concealed Fastener Wall Panel System. 2. Substitutions: Under provisions of Division 1.

B. Sheet Materials:

1. Coated Sheet Steel: ASTM A755; coil coated galvanized sheet steel. a. Base Metal: ASTM A653, G90, Class Z725; zinc�coated (galvanized) steel sheet; structural steel quality. b. Nominal Uncoated Sheet Thickness: minimum 0.0346 inch thickness (20 gauge).



c. Surface Texture: Smooth.

2. Galvanized Sheet Steel: ASTM A653, G90, Class Z725; structural steel quality.

C. Wall Panels: Factory�formed single�skin coated sheet steel panels with interconnecting side joints configured for concealed fastening; 4�rib profile with recessed flat pane between ribs; Centria #CS�660. 1. Nominal Depth: 7/8 inch. 2. Panel Coverage: 16 inches. D. Accessories:

1. Trim, Flashing and Closure Pieces: Factory formed of same material, gauge and finish as adjacent wall panels.

2. Clips: Fabricated from minimum 16 gauge galvanized sheet steel; profiles to engage panels; configured for concealed attachment. a. Panel Clips: 1�1/2 inches wide x 3/4 inch deep with 7/8 inch high attachment leg; CSC�3 Clip. b. Starter Clips: Continuous 4 break shape with 1/2 inch offset and 1�1/16 inch high attachment leg; CSSF�1 Starter Flash.

3. Fasteners: Stainless steel; types recommended by panel manufacturer for application. a. Screws: Self�drilling screws with 5/8 inch diameter combination bonded steel and neoprene washers; #14 diameter shank; point appropriate to thickness of supporting steel. b. Rivets: Bulb�tite type and dome type as indicated on Drawings; diameters as indicated on Drawings; heads with factory applied coating to match color of trim, flashing and closure pieces. 4. Composition Closure: Manufacturer’s standard preformed end closure shaped to tightly fit panel configuration. 5. Flashing Tape: Non�curing butyl type; self�adhering; 4 inches wide; 1/4 inch thick. 6. Sealant: Non�curing butyl type recommended by panel manufacturer; VOC content not to exceed limits established by South Coast Air Quality Management District Rule #1168.



E. Fabrication:

1. Factory fabricate system components to greatest extent possible for field assembly.

2. Form panels, trim, flashing and closure sections true to shape, accurate in size, square, and free from distortion and defects.

3. Form panels by continuous end�rolling method. Cut true to shape, square and accurate in size.

4. Form trim, flashing and closure sections to profiles indicated on Drawings in longest practical lengths.

a. Form to provide for expansion and contraction in finished installation. b. Hem exposed edges of trim and closures 1/2 inch. c. Fabricate flashings to lap wall panels at least 4 inches. d. Fabricate vertical faces of flashings with bottom edges formed outward and hemmed to form drips. e. Form flashings for lapped seams. F. Finishes:

1. Coil Coated Finish System: AAMA 621; coil�coated fluoropolymer resin finish containing minimum 70 percent polyvinylidene fluoride resin; 3�coat system consisting of 0.8 mil primer with 0.8 mil PVDF fluoropolymer color coat and 0.8 mil PVDF fluoropolymer clear finish coat; Centria Duraguard Plus.

a. Exterior Surfaces: Color to match Centria Prismatic™ Series color #1760

“Limestone.” b. Interior Surface: 1) Wall Panels: Color to match exterior surface color. 2) Trim, Flashing and Closures: Color to match exterior surface color or manufacturer’s standard off�white color.

PART 3 EXECUTION 3.1 EXAMINATION

A. Verify that field conditions are acceptable and are ready to receive work of this section.



B. Verify that structural steel framing supporting screens has been installed and is properly located.

C. Do not begin installation until unsatisfactory conditions have been corrected.

3.2 INSTALLATION � FRAMING

A. Install screen and gate framing in accordance with final reviewed shop drawings.

B. Install screen framing and gate frames plumb, true and in correct relation to adjacent work.

C. Obtain Architect's authorization prior to site cutting or making adjustments that are not

part of scheduled work.

D. Field weld components indicated on shop drawings. Perform field welding in accordance with AWS D1.1. Grind welds smooth and flush.

E. After installation, touch up welds and scratched and damaged galvanized finishes with cold galvanizing repair compound and primer. F. Coordinate field painting of posts and frames. G. Erection Tolerances: Maximum framing deviation from flat plane: 1. 1/4 inch in 20 feet vertically and horizontally. 2. 1/2 inch across screen elevation. 3. 1/8 inch in 5 feet. 3.3 INSTALLATION � FACING

A. Install metal panel system in accordance with final reviewed shop drawings and with manufacturer’s instructions and recommendations.

B. Install metal panels in orientation, sizes and locations indicated. C. Anchor wall panels and trim, flashings and closure pieces securely in place; provide for thermal and structural movement. D. Wall Panels: 1. Set clips over support framing at each panel joint at required spacing; secure to framing with screws.

2. Set wall panels aligned, level and plumb; secure to concealed clips without use of exposed fasteners.



D. Trim; Flashing and Closures:

1. Set trim, flashing and closure pieces as required for complete metal wall panel assembly in place true to line and level. 2. Secure in place with recommended fasteners.

3.4 ADJUSTING

A. Remove and replace panels and flashings damaged beyond repair. Repair, to Architect's satisfaction, panels and flashings with scratched finish and minor damage.

3.5 CLEANING A. Remove temporary protective films from wall panel assembly components. B. Clear weep holes and drainage channels in wall panel assembly of obstructions, dirt and sealant. Maintain in clean condition during construction. C. Clean finished surfaces of wall panel assembly as recommended by panel manufacturer. 3.6 PROTECTION OF INSTALLED WORK

A. Protect installed panels from abuse by other trades.

B. Ensure other trades provide necessary protection against damage from wet concrete, plastering, painting and other construction activities.

END OF SECTION

Documents

006 - Vol 1 Division 5