CANIZALES BOXING GYM EXPANSION PROJECT STORM …

CANIZALES BOXING GYM EXPANSION PROJECT STORM WATER POLLUTION

PREVENTION PLAN

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Canizales Boxing Gym Expansion Project Division 1/Storm Water Pollution Prevention Plan SEC N0. 8196.00

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SECTION 01510

STORM WATER POLLUTION PREVENTION PLAN

PART 1 – GENERAL

1.1 DESCRIPTION

A. SCOPE

This item shall govern the control measures necessary to prevent and control soil

erosion, sedimentation and water pollution which may degrade receiving waters

including rivers, streams, lakes, reservoirs, tidal waters, groundwater and

wetlands. The control measures contained herein shall be installed and

maintained throughout the construction contract and coordinated with the

permanent or existing temporary pollution control features specified elsewhere in

the plans and specifications to assure effective and continuous water pollution

control throughout the construction and post construction period. These control

measures shall not be used as a substitute for the permanent pollution control

measures unless otherwise directed by the Engineer in writing. The controls may

include silt fences, baled hay, rock filter dams, revet mattresses, gabions, dikes,

swales, sediment traps and basins, pipe slope drains, paved flumes, construction

exits, temporary seeding, sodding, mulching, soil retention blankets or other

structural or non-structural water pollution controls.

1.2 SUBMITTALS

The Contractor shall be required to jointly sign the Pollution Prevention Plan

Certification and file a Notice of Intent (NOI) with the Owner, to the

Environmental Protection Agency (EPA).

Prior to the start of construction, the Contractor shall submit to the Engineer, for

approval, schedules for accomplishment of the pollution control measures in

accordance with the Storm Water Pollution Prevention Plan. Work on the project

shall not begin until the schedules for implementation of the controls and methods

of operations have been reviewed and approved by the Engineer in writing. The

Contractor shall provide the Engineer, for information purposes, proposed

methods of pollution control for Contractor operations in areas which are outside

the project limits (such as construction and haul roads, field offices, equipment

and supply areas, and material sources) as well as a plan for disposal of waste

materials.

____________________________________________________________________________________________________________ Canizales Boxing Gym Expansion Project Division 1/Storm Water Pollution Prevention Plan SEC N0. 8189.00

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1.3 SITE DESCRIPTION

A. PROJECT NAME AND LOCATION:

CANIZALES BOXING GYM EXPANSION PROJECT

OWNER’S NAME AND ADDRESS:

CITY OF LAREDO

LOCATED ON GUADALUPE STREET AND MENDIOLA AVENUE

INTERSECTION IN SOUTH LAREDO

1610 GUADALUPE STREET LAREDO, TEXAS 78043

B. DESCRIPTION (Purpose and types of soil disturbing activities)

The project consists of approximately 0.56 acres in South Laredo. The

construction work includes the installation of sidewalk, curb and gutter, asphalt,

caliche and sub-grade. The work also includes the installation of water lines,

storm sewer lines, sanitary sewer lines, and other utility services. The work will

also include trenching and backfilling for the installation of utilities as indicated

in the contract document and specifications.

C. RUNOFF COEFFICIENT

The final average coefficient of runoff for the entire disturbed area will

approximately be C=0.96. The construction site coefficient of runoff is c=0.37.

The actual site is approximately 0.56 acres of which approximately 0.56 acre will

be disturbed by construction activities.

D. NAME OF RECEIVING WATERS

This site drains into the street and eventually into Chacon Creek.

1.4 CONTROLS A. EROSION AND SEDIMENT CONTROLS

1. Stability Practices for the Site:

a. Maximum preservation of natural vegetation and buffer zones by

minimizing rough grading and lot filling operations.

b. Permanent lots, seeding and hydro mulching as may be necessary.

c. Newly graded lots will have textured soil surfaces to reduce the sheet flow

and improve surface water impoundment.

2. Structural Practices for this Site:

a. Silt fence

b. Construction exits

c. Stockpiles will be surrounded by or silt fence.


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d. Trench excavation spoils not immediately hauled off will be backfilled

into the trenches in a continuous operation.

B. NARRATIVE (Order of Activities)

A. Completion of the entire project is expected to be less than 6 months.

1. Clear and grub for perimeter control (i.e. silt fence and hay bales).

2. Install perimeter controls as indicated in the drawings.

3. Install construction entrances and exits.

4. General project construction- beginning with rough grading and lot filling.

5. When all construction activity is complete and the site is stabilized, remove

structural controls.

1.5 OTHER CONTROLS A. WASTE DISPOSAL

All waste materials shall be collected and stored in a dumpster. Contractor shall

meet all local and State solid waste management regulations. All trash and

construction debris from the site will be deposited in the dumpster. The dumpster

will be emptied as often as necessary, and the trash will be hauled from the site.

No construction materials will be buried on-site. All personnel will be instructed

regarding the correct procedure for disposal. Notices stating these practices will

be posted in the office trailer. The Contractor shall be responsible for collection

of all waste material.

B. HAZARDOUS WASTE

All hazardous waste materials will be disposed of in the manner specified by local

or state regulations. Contractor's personnel will be instructed in these practices.

C. SANITARY WASTE

All sanitary waste will be collected from the portable units as necessary by a

licensed sanitary waste management contractor.

1.6 MAINTENANCE AND INSPECTION PROCEDURES

The following is a list of minimum erosion and sediment controls.

A. STABILIZATION PRACTICES FOR THE SITE None

B. STRUCTURAL PRACTICES FOR THE SITE

1. Silt fence and/or hay bales.

2. Stabilized construction entrances and exits.

3. Stabilized creek crossing.

1.7 EROSION AND SEDIMENT CONTROL INSPECTION AND

MAINTENANCE PRACTICES:

The following inspection and maintenance practices shall be used to maintain

erosion and sediment controls:

A. All control measures shall be inspected at least once each week and following a

construction site storm event of 0.5 inches or greater.

B. All measures shall be maintained in good working order; if a repair is necessary,

the repair shall be initiated within twenty-four (24) hours of report.


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C. Built up sediment shall be removed from silt fences and hay bales when it has

reached one-third the height of the structure.

D. Silt fences shall be inspected for depth of sediment, tears, in securely attached

fabric, and firmness of fence posts.

E. A maintenance inspection report shall be made after each inspection. A copy of

the report form to be completed by the Contractor's inspector is attached.

1.8 SPILL PREVENTION The minimum following material management practices shall be used to reduce

the risk of spills or other accidental exposure of materials and substances to storm

water runoff.

A. GOOD HOUSEKEEPING

The following good housekeeping practices shall be followed on-site during the

construction project.

1. In effort shall be made to store only enough products required to do the job.

2. All materials stored on-site shall be stored in a neat, orderly manner in their

appropriate containers and, if possible, under a roof or other enclosure.

3. Products shall be kept in their original containers with the original

manufacturer's labels.

4. Substances shall not be mixed with one another unless recommended by the

manufacturer.

5. Whenever possible, all of a product shall be used up before disposing of the

container.

6. Manufacturers' recommendations for proper use and disposal shall be

followed.

7. The Contractor shall inspect daily, to ensure proper use and disposal of

material on-site.

B. HAZARDOUS PRODUCTS

The following practices shall be used to reduce the risks associated with

hazardous materials.

1. Products shall be kept in original containers unless they are not resealable.

2. Original labels and material safety data containing important product

information shall be safe guarded.

3. If surplus product must be disposed of, manufacturers' or local and state

recommended methods for proper disposal shall be follows.

C. PRODUCT SPECIFIC PRACTICES

The following product specific practices shall be followed on site:

1. Petroleum Products: All on-site vehicles shall be monitored for leaks and

receive regular preventive maintenance to reduce the chance of leakage.

Petroleum products shall be stored in tightly sealed containers which are

clearly labeled. Any asphalt substances used on-site shall be applied

according to the manufacturer's recommendations.

2. Fertilizers: Shall be applied only in the minimum amounts as specified.

Once applied, the fertilizer shall be worked into the soil to limit exposure to


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storm water. Storage shall be in a covered shed. The contents of any partially

used bags of fertilizer shall be transferred to a sealable plastic bin to avoid

spills.

3. Paints: All containers shall be tightly sealed and stored when not required for

use. Excess paint shall not be discharged to the storm sewer system but will

be properly disposed of according to manufacturers' instructions and state and

local regulations.

4. Concrete Trucks: Will not be allowed to wash out or discharge surplus

concrete or drum wash water on the site.

D. SPILL PREVENTION PRACTICES

The following practices shall be followed for spill prevention and clean up:

1. Manufacturers' recommended methods for spill clean up shall be clearly

posted and site personnel shall be made aware of the procedures and the

location of the information and clean up supplies.

2. Materials and equipment necessary for spill clean up shall be kept in the

material storage area on site. Equipment and materials include but not limited

to brooms, dust pans, mops, rags, gloves, goggles, kitty litter, sand, sawdust,

and plastic and metal trash containers specifically for clean up.

3. All spills shall be cleaned up immediately after discovery.

4. The spill area shall be kept well ventilated and personnel shall wear

appropriate protective clothing to prevent injury from contact with a

hazardous substance.

5. Spills of toxic or hazardous material regardless of the size shall be reported to

the appropriate state or local government agency.

6. The spill prevention plan shall be adjusted to include additional written

measures to prevent this type of spills from reoccurring and clean up the spill

if there is another. A description of the spill, what caused it, and the clean up

measures shall also be included.

7. The Contractor shall designate at least two (2) site personnel who shall receive

spill prevention and clean up training. The individuals shall become

responsible for spill prevention and clean up. The names of responsible spill

personnel shall be posted in the materials storage area and in the office trailer

on site.

PART 2 - PRODUCTS

2.1 SILT FENCE:

A. Fabric. Fabric materials shall meet the requirements of TxDOT Materials

Specification D-9-6230, Silt Fence.

B. Fence Types: Two types of silt fences are identified as follows:

1. Type 1: This system is a self supported fence, using a woven geotextile

fabric.

2. Type 2: This system is a not-reinforced fence, using a non-woven geotextile

fabric.

C. Posts: Posts for fence Types 1 and 2 shall be a minimum of 48 inches long,

essentially straight, and shall be wood or steel, unless otherwise shown on the


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plans. Soft wood posts shall be at least 3 inches in diameter or nominal 2 x 4

inches and essentially straight. Hardwood posts shall have a minimum cross

section of 1.5 x 1.5 inches. Steel posts shall be "T" or "L" shaped with a

minimum weight of 1.3 pounds per linear foot.

D. Net Reinforcement: Net reinforcement for the Type 2 fence system shall be

galvanized welded wire mesh of a minimum 12.5 gauge wire or equal, as

approved by the Engineer, with a maximum opening size of 4 inches square and

shall be at least 24 inches wide.

E. Tension Reinforcement and Staples: Tension reinforcement for the Type 1 fence

shall consist of wire or wire cable of at least 12.5 gauge.

F. Staples used to secure reinforcement and fabric to wood posts shall have a crown

at least 3/4 inch wide and legs a minimum of 1/2 inch long.

When the type of fabric or type of reinforcement system is not specified on the

plans, the Contractor may select either of the described types for use in

construction of the silt fence.

2.3. STABILIZED STREAM CROSSINGS:

The material used to prevent erosion and vehicular rutting at stream crossings

shall be concrete rubble or course graded aggregate. Unless otherwise directed,

the rubble or aggregate used in this application shall conform to the requirements

of ASTM D448, size #3 (1 to 2 inch) or as directed by the Engineer.

2.4 STABILIZED CONSTRUCTION EXITS:

A. TIMBER CONSTRUCTION

Timber for construction shall consist of treated railroad ties and lumber. The

railroad ties and lumber shall be treated to control rot and shall be No. 2 quality or

better and free of large and loose knots. Timber shall be fastened with nuts and

bolts or lag bolts all of which shall meet or exceed ASTM-A307.

B. FOUNDATION COURSE

The foundation course shall be flexible base, bituminous concrete, portland

cement concrete, or other material as approved by the Engineer.

PART 3 - EXECUTION

3.1 GENERAL:

A. PREVENTION PLAN

These guidelines and quantities of controls set forth here and in the Plans are to be

considered minimum requirements. It is the Engineer's intent that the pollution

prevention plan be adaptable to changing conditions in the field, both expected

and unexpected. The Engineer may require additional or modified controls in

order to meet the legal requirements of the NPDES construction permit.

The Contractor may develop his own Pollution Prevention Plan if so desired. The

plan must be submitted and approved by the Engineer and must meet all

regulations and guidelines of the EPA's NPDES storm water permitting

requirements.


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B. CONSTRUCTION REQUIREMENTS

1. The Engineer has the authority to limit the disturbed surface area exposed by

construction operations. The Contractor shall provide control measures to

prevent or minimize the impact to receiving waters as required by the plans

and/or as directed in writing by the Engineer.

2. The Contractor shall effectively prevent and control erosion and

sedimentation on the site at the earliest practicable time. Control measures,

where applicable, shall be implemented prior to the commencement of each

construction operation or immediately after the area has been disturbed.

The Contractor shall limit the amount of disturbed earth as directed by the

Engineer. If the Contractor is not able to effectively control soil erosion and

sedimentation resulting from construction operations, the Engineer shall limit

the amount of disturbed area to that which the Contractor is able to work in.

Should the control measures fail to function effectively, the Contractor shall

act immediately to bring the erosion and sedimentation under control by

maintaining existing controls or by providing additional controls as directed

by the Engineer. When in the opinion of the Engineer the site is adequately

stabilized, the Contractor may be required to remove and dispose of the

control measures specified by the Engineer.

All erosion, sediment and water pollution controls shall be maintained in good

working order. A rain gauge shall be located at the project site. Within 24

hours of a rainfall event of 0.5 inch or more as measured by the project rain

gauge, the Contractor and Engineer shall inspect the entire project to

determine the condition of the control measures. Sediment will be removed

and devices repaired as soon as practicable but no later than 7 days after the

surrounding exposed ground has dried sufficiently to prevent further damage

from equipment needed for repair operations.

In the event of continuous rainfall over a 24 hour period, or other

circumstances that preclude equipment operations in the area, the Contractor

will hand carry and install additional backup devices as determined by the

Engineer. The Contractor shall remove silt accumulations and deposit the

spoils in an area approved by the Engineer as soon as practicable. Any

corrective action needed for the control measures shall be accomplished in the

sequence directed by the Engineer, however areas adjacent to water bodies

shall generally have priority followed by devices protecting storm sewer

inlets.

3. The Contractor shall also conform to the following practices and controls.

a. Disposal areas, stockpiles and haul roads shall be constructed in a

manner that shall minimize and control the amount of sediment that may


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enter receiving waters. Disposal areas shall not be located at any

wetland, water body or streambed.

b. Construction operations in streams, wetlands and other waterbodies shall

be restricted to those areas where it is necessary to perform the work

shown on the plans. Wherever streams are crossed, temporary stabilized

stream crossings shall be used.

c. Protected storage for paints, chemicals, solvents, fertilizers and other

potentially toxic materials shall be provided by the Contractor at a

location approved by the Engineer.

d. Construction staging areas and vehicle maintenance areas shall be

constructed by the Contractor in a manner to minimize the runoff of

pollutants at a location approved by the Engineer. The Contractor shall

prevent pollution of receiving waters with petroleum products or other

hazardous or regulated substances. When work areas or material

sources are located adjacent to a water body, control measures such as

dikes, gabions or rock berms, shall be used to keep sediment and other

contaminants from entering the adjacent water body. Care shall be

taken during the construction and removal of such barriers to minimize

down-gradient sedimentation.

e. All waterways shall be cleared as soon as practicable or pipe, shoring,

formwork or other obstructions placed during construction operations

that are not a part of the finished work.

f. Disturbance of vegetation shall be minimized as directed by the

Engineer.

g. The Contractor shall clean paved surfaces as necessary to remove

sediment which has accumulated on the roadway.

4. The project will not be accepted or approved by the Engineer until the

Contractor provides a uniform perennial vegetative cover, or that equivalent

permanent stabilization measures supplemented by temporary measures

when necessary (such as riprap, gabions, soil retention blankets, mulching)

have been employed that will control erosion sedimentation and water

pollution until sufficient vegetative cover can be established.

3.2 SILT FENCE

A. CONSTRUCTION METHODS

Silt fence shall be used during construction near the perimeter of a disturbed area

to intercept sediment form sheet flow. Silt fence of the self-supported Type 1

shall be used only at location where the length of overland runoff is less than 100

feet, the embankment is less than 20 feet in height, the slopes are 3:1 or flatter, or

the installation will be required for less than 6 months. The silt fence installation

methods shall be as specified below, unless otherwise shown on the plans, for the

type specified or selected. The physical alignment and location of the fence shall

be approved by the Engineer.

1. Installation of Posts

Posts for fence types 1 and 2 shall be embedded 18 inches deep, or adequately


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anchored if in rock, with a spacing of 6 to 8 feet, and installed on a slight

angle toward the anticipated run-off source.

2. Fabric Anchoring

Trenches for fence types 1 and 2 shall be dug along the uphill side of the fence

to anchor 6 to 8 inches of fabric. The trench shall have a minimum cross

section of 6 x 6 inches. The fabric for fence types 1 and 2 shall be installed in

the trench such that 4 to 6 inches of fabric is against the side of the trench and

approximately 2 inches of fabric is across the bottom in the upstream

direction. The trench shall be backfilled and hand tamped as approved by the

Engineer.

3. Fabric Attachment

a.) Fence Type 1: The fabric shall be attached to wood posts by staples or

locking plastic ties at a maximum spacing of 6 inches. Attachment to steel

posts shall be by sewn vertical pockets or locking plastic ties if the posts have

suitable projections. The top of the fabric shall be fastened to the tension

reinforcement wire or wire cable by hog rings, locking plastic ties, or cord at a

maximum spacing of 2 feet.

b.) Fence Type 2: The reinforcement shall be attached to the end posts, if

wood, by staples or locking plastic ties, or if steel, by T-clips, locking plastic

ties, or sewn vertical pockets at a minimum of 4 locations. The reinforcement

shall be attached to each succeeding post as approved by the Engineer.

Connect the ends of successive reinforcement sheets or rolls at a fence post at

least 6 times with hog rings or locking plastic ties. The fabric shall be

fastened to the top strand or reinforcement by hog rings, locking plastic ties,

or cord at a maximum spacing of 2 feet.

4. Fabric Splices: Splices for fence Types 1 and 2 shall occur at a fence post and

shall have a minimum lap of 6 inches attached in at least 6 places. Splices in

concentrated flow areas shall not be permitted.

B. MAINTENANCE

The silt fence shall be maintained in good condition (including staking,

anchoring, tension adjustments, etc.) by the Contractor. All necessary work

and materials to maintain the integrity of the fence shall be provided until

earthwork construction and permanent erosion control features are in place

and/or the disturbed area has been adequately stabilized. This type of routine

maintenance shall not be paid for directly but will be considered subsidiary to

this item. The areas damaged by the removal process shall be stabilized by

the Contractor using appropriate methods as approved by the Engineer.

3.3 STABILIZED STREAM CROSSING


At all locations where vehicles shall be crossing Zacate Creek, a 6" deep and 14'

wide (minimum) rubble or aggregate crossing shall be installed. The crossing

length shall be from toe to toe on the stream bank side slopes.

B. MAINTENANCE


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The crossing will be maintained while working in the area. Washouts and rutting

shall be repaired within a 48-hour period after damage is noted.

3.4 STABILIZED CONSTRUCTION ENTRANCE & EXITS:


When tracking conditions exist, traffic shall not be allowed to cross or leave the

construction site and move directly onto a public roadway, alley, sidewalk,

parking area, or other right of way in areas other than at locations of construction

entrances and exits. Construction entrances and exits can be either for long or

short-term use. Foundation courses, if needed, shall be used with the long-term

construction exits.

The exit shall be placed over a foundation course, if directed by the Engineer.

The foundation course and/or compacted subgrade shall be properly graded to

direct runoff from the construction exit to a sediment trap as shown in the plans or

as directed by the Engineer. The exit shall normally be constructed a minimum

length of 50 feet. The width shall be at least 14 feet for one-way traffic and 20

feet for 529-way traffic but shall not be less than full width of all points of ingress

and egress and shall be sufficient for all ingress and egress.

B. MAINTENANCE

Exits shall be maintained in a condition which will prevent tracking or flowing of

sediment onto public right of way and may require periodic removal and

replacement of stone or timber, or other material as conditions demand and repair

and/or clean out of any measures used to trap sediment. Sediment spilled,

dropped, washed or tracked onto public right of way shall be immediately

removed by the Contractor and disposed of at an approved site and in a manner

that will not contribute to additional siltation.

When necessary, wheels shall be cleaned to remove sediment prior to entrance

onto public right of way. When vehicle washing is required, the construction exit

shall be graded to drain into a sediment trap or sediment basin. Sediment shall be

prevented from leaving the construction site.

The construction exits shall be removed promptly when directed by the Engineer.

Discarded materials shall become the property of the Contractor for his disposal at

an approved site. The area beneath the construction exit and area damaged by the

removal process shall be stabilized by the Contractor using appropriate methods

as approved by the Engineer.


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CONTRACTOR CERTIFICATION

FOR


POLLUTION PREVENTION PLAN

I certify under penalty of law that I understand the terms and conditions of the general

National Pollutant Discharge Elimination System (NPDES) permit that authorizes the

storm water discharges associated with industrial activity from the construction site

identified as part of this certification. Further, by my signature, I understand that I am the

permittee, along the any subcontractors signing such certifications to the general NPDES

permit for the storm water discharges associated with industrial activity from the

identified site. As permittee, I understand that I and my company, are legally required

under the Clean Water Act, to ensure compliance with the terms and conditions of the

storm water pollution prevention plan developed under the NPDES permit and the terms

of the NPDES permit.

Signature: For: Work Responsible

Title:

Date:


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POLLUTION PREVENTION PLAN CERTIFICATION

I certify under penalty of law that this document and all attachments were prepared under

my direction or supervision in accordance with a system designed to assure that qualified

personnel properly gathered and evaluated the information submitted. Based on my

inquiry of the person or persons who managed the system, or those persons directly

responsible for gathering the information, the information submitted is, to the best of my

knowledge and belief, true, accurate, and complete. I am aware that there are significant

penalties for submitting false information, including the possibility of fine and

imprisonment for knowing violations.

Signed:

Date:


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INSPECTOR CERTIFICATION

I certify under penalty of law that this document and all attachments were prepared under

my direction or supervision in accordance with a system designed to assure that qualified

personnel properly gathered and evaluated the information submitted. Based on my

inquiry of the person or persons who managed the system, or those persons directly

responsible for gathering the information, the information submitted is, to the best of my

knowledge and belief, true, accurate, and complete. I am aware that there are significant

penalties for submitting false information, including the possibility of fine and

imprisonment for knowing violations.

Signed:

Inspector

Construction Company

Date:


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INSPECTION AND MAINTENANCE REPORT


Inspector: Date:

Days Since Last Rainfall: Amount of Last Rainfall: Inches

STABILIZATION MEASURES

DATE SINCE DATE SINCE

LAST NEXT STABILIZED

AREA DISTRUBANCE DISTURBANCE STABILIZED? WITH CONDITION

Stabilization Required:

To Be Performed By: On Or Before:


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STRUCTURAL CONTROLS

FILTER FABRIC FENCE


BOTTOM FABRIC POTS HOW DEEP

OF FABRIC TORN OR TIPPING IS THE

LOCATION STILL BURIED? SAGGING? OVER? SEDIMENT?

Maintenance Required For Silt Fences:

To Be Performed By: On Or Before:


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Changes Required To The Pollution Prevention Plan?

Reasons For Changes:

Inspector’s Signature: Date:

SMALL CONSTRUCTION SITE NOTICE FOR THE

Texas Commission on Environmental Quality (TCEQ) Stormwater Program

TPDES GENERAL PERMIT TXR150000

The following information is posted in compliance with Part II.E.2. of the TCEQ General Permit Number TXR150000 for discharges of stormwater runoff from small construction sites. Additional information regarding the TCEQ stormwater permit program may be found on the internet at:

http://www.tceq.state.tx.us/nav/permits/wq_construction.html

Operator Name:

Contact Name and Phone Number:

Project Description: Physical address or description of the site’s location, estimated start date and projected end date, or date that disturbed soils will be stabilized

Location of Stormwater Pollution Prevention Plan:

For Small Construction Activities Authorized Under Part II.E.2. (Obtaining Authorization to Discharge) the following certification must be completed:

I (Typed or Printed Name Person Completing This Certification) certify under penalty of law that I have read and understand the eligibility requirements for claiming an authorization under Part II.E.2. of TPDES General Permit TXR150000 and agree to comply with the terms of this permit. A stormwater pollution prevention plan has been developed and will be implemented prior to construction, according to permit requirements. A copy of this signed notice is supplied to the operator of the MS4 if discharges enter an MS4. I am aware there are significant penalties for providing false information or for conducting unauthorized discharges, including the possibility of fine and imprisonment for knowing violations.

Signature and Title Date

Date Notice Removed

MS4 operator notified per Part II.F.3.

http://www.tceq.state.tx.us/nav/permits/wq_construction.html

Portland Cement StuccoSection 09 24 23

Page 1 of 15

Canizales Boxing Gym Expansion Project Frank Architects Inc.

SECTION 09 24 23 PORTLAND CEMENT STUCCO

PART 1 GENERAL

1.01 SECTION INCLUDESA. Materials and installation of exterior stucco wall covering with continuous insulation, waterproof air barrier

and drainage cavity.

1.02 RELATED SECTIONSA. Section 03 30 00 Cast-In-Place ConcreteB. Section 04 20 00 Unit MasonryC. Section 07 62 00 Sheet Metal Flashing and TrimD. Section 07 92 00 Joint SealantsE. Section 08 40 00 Entrances, Storefronts, and Curtain WallsF. Section 08 50 00 Windows

1.03 REFERENCED DOCUMENTSA. ASTM Standards:

1. A 641 Standard Specification for Zinc-Coated (Galvanized ) Carbon Steel Wire2. A 653 Specification for Sheet Steel Zinc coated (Galvanized) by the Hot-Dip Process,

Commercial Quality3. B 69 Specification for Rolled Zinc4. C 144 Specification for Aggregate for Masonry Mortar5. C 297 Standard Test Method for Flatwise Tensile Strength of Sandwich Constructions6. C 578 Specification for Preformed, Cellular Polystyrene Thermal Insulation7. C 847 Standard Specification for Metal Lath8. C 897 Standard Specification for Aggregate for Job-Mixed Portland Cement-Based

Plasters9. C 926 Standard Specification for Application of Portland Cement-Based Plaster10. C 1063 Standard Specification for Installation of Lathing and Furring for Portland

Cement Plaster11. C 1177 Specification for Glass Mat Gypsum for Use as Sheathing12. C 1513 Standard Specification for Steel Tapping Screws for Cold-Formed Steel

Framing Connections13. D 226 Standard Specification for Asphalt-Saturated Organic Felt Used in Roofing and

Waterproofing14. D 1784 Specification for Rigid Poly (Vinyl Chloride) (PVC) Compounds and

Chlorinated Poly (Vinyl Chloride) (CPVC) Compounds15. D 4541 Test Method for Pull-Off Strength of Coatings Using Portable Adhesion

Testers16. E 96 Standard Test Methods for Water Vapor Transmission of Materials17. E 283 Test Method for Determining Rate of Air Leakage Through Exterior Windows,

Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen

18. E 330 Test Method for Structural Performance of Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Difference

19. E 331 Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform Static Air Pressure Difference

20. E 783 Standard Test Method for Field Measurement of Air Leakage Through Installed Exterior Windows and Doors

21. E 2178 Standard Test Method for Air Permeance of Building Materials


Page 2 of 15


22. E 2357 Standard Test Method for Determining Air Leakage of Air Barrier Assemblies23. E 2430 Standard Specification for Expanded Polystyrene (“EPS”) Thermal Insulation

Boards For Use in Exterior Insulation and Finish Systems (“EIFS”).

B. APA Engineered Wood Association1. PS 1 Voluntary Product Standard, Structural Plywood2. PS 2 Performance Standard for Wood-Based Structural-Use Panels3. E 30 APA Engineered Wood Construction Guide

C. AISI (American Iron and Steel Institute)1. AISI S200-2007 North American Standard for Cold-Formed Steel Framing-General

Provisions

D. ICC ES (International Code Council Evaluation Service)1. AC 11, Acceptance Criteria for Cementitious Exterior Wall Coatings2. AC 212, Acceptance Criteria for Water-resistive Coatings used as Water-resistive Barriers

over Exterior Sheathing3. ICC ESR 1233: StoGuard with Gold Coat and StoGuard with EmeraldCoat Water-resistive

Barriers4. ICC ESR 2323: StoPowerwall and StoPowerwall NExT Stucco Systems5. ICC ESR 2142: Styrofoam Brand Insulation Boards and Dow Fan-Fold Products

E. Proprietary Publications 1. Sto S 422 StoGuard Waterproof Air Barrier Handbook

1.04 DESIGN REQUIREMENTS

A. Structural (wind and axial loads)

1. Design for maximum allowable deflection, normal to the plane of the wall of L/3602. Design for wind load in conformance with all code requirements3. Substrate – 8” CMU load – bearing walls, per structural drawings.4. Insulation board: maximum 2 inch XPS (extruded polystyrene) insulation board in

conformance with ASTM C 578 Type IV requirements5. Drainage mat: maximum ¼ inch thick6. Metal Lath: minimum 2.5 lb / yd2 (1.4 kg / m2) self-furred galvanized steel diamond mesh

metal lath in conformance with ASTM C 8477. Lath fasteners and plates: corrosion resistant fasteners in conformance with AISI Standard

S200-2007 and ASTM C 1513, for CMU wall substrate. All fasteners shall comply with applicable codes and wind loads.

8. Stucco: minimum 5/8 inch, maximum 7/8 inch portland cement stucco in conformance with ASTM C 926 of uniform thickness applied in two coats, scratch and brown coat.

B. Moisture Control1. Prevent the accumulation of water into or behind the stucco, either by condensation or

leakage into the wall construction, in the design and detailing of the wall assembly:a. Provide corrosion resistant flashing to protect exposed elements and to direct water to

the exterior, including, above window and door heads, beneath window and door sills, at floor lines, at roof/wall intersections, decks, abutments of lower walls with higher walls, above projecting features, and at the base of the wall.

b. Air Leakage Prevention—prevent excess air leakage in the design and detailing of the wall assembly. Provide continuity between air barrier components in the wall assembly.Refer to StoGuard Waterproof Air Barrier Handbook.


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c. Vapor Diffusion and Condensation -- perform a dew point analysis of the wall assembly to determine the potential for accumulation of moisture in the wall assembly as a result of water vapor diffusion and condensation. Adjust wall assembly components accordingly to minimize the risk of condensation. Avoid the use of vapor retarders on the interior side of the wall in warm, humid climates.

d. Provide StoGuard Waterproof Air Barrier over sheathing, concrete and masonry.e. At expansion joints, back joints with barrier membrane. Refer to Sto details at

www.stocorp.com. f. Seal stucco terminations and accessory butt joints with appropriate sealant.

C. Grade Condition1. Do not specify stucco for use below grade or on surfaces subject to continuous or

intermittent water immersion or hydrostatic pressure. Provide minimum 4 inch (100 mm) clearance above earth grade, minimum 2 inch (51 mm) clearance above finished grade (pavers/sidewalk). Provide increased clearance in freeze/thaw climate zones.

D. Sloped surfaces, including Foam Trim and Projecting Architectural Features Attached to Stucco.1. Avoid the use of stucco on build-outs or weather exposed sloped and horizontal surfaces

(refer to 2 and 3 below).2. Build out trim and projecting architectural features from the stucco wall surface with code

compliant EPS foam. All foam trim and projecting architectural features must have a minimum 1:2 [27] slope along their top surface. All foam horizontal reveals must have a minimum 1:2 [27] slope along their bottom surface. Increase slope for northern climates to prevent accumulation of ice/snow and water on surface. Where trim/feature or bottom surface of reveal projects more than 2 inches (51 mm) from the face of the wall plane, protect the top surface with waterproof base coat. Limit foam thickness to a maximum of 4 inches (102 mm). Periodic inspections and increased maintenance may be required to maintain surface integrity of finishes on weather exposed sloped surfaces. Limit projecting features to easily accessible areas and limit total area to facilitate maintenance and minimize maintenance burden. Refer to Sto details.

3. Do not use EPS foam on weather exposed projecting ledges, sills, or other projecting features unless supported by framing or other structural support and protected with metal coping or flashing. Refer to Sto details.

E. Joints and Accessories1. Provide two piece expansion joints in the stucco system where building movement is

anticipated: at joints in the substrate or supporting construction, where the system is to be installed over dissimilar construction or substrates, at changes in building height, at floor lines, at columns and cantilevered areas.

2. Provide one piece expansion joints every 144 ft2 (13 m2). Cut and wire tie lath to the expansion joint accessory so lath is discontinuous at or beneath the accessory. Do not exceed length to width ratio of 2-1/2:1 in expansion joint layout and do not exceed more than 18 feet (5.5 m) in any direction without an expansion joint. Where casing bead is used back-to-back as the expansion joint, back the joint with barrier membrane.

3. Provide one piece expansion joints at through wall penetrations, for example, above and below doors or windows.

4. Provide minimum 3/8 inch (9 mm) wide joints where the system abuts windows, doors and other through wall penetrations.

5. Provide appropriate accessories at stucco terminations and joints.6. CAUTION: Exercise extreme care in design and detailing when incorporating channel

reveal accessories in the stucco wall assembly. Embed in sealant and apply surface sealant as necessary to prevent water leakage where channel reveal accessories abut or intersect with other accessories. Do not use channel reveal accessories in lieu of expansion or


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control joints. The use of channel reveal accessories may interfere with drainage and cause excess cracking where stucco adjoins the accessory. Limit use to areas that can be easily maintained or avoid their use.

7. Provide appropriate sealant at stucco terminations and at stucco accessory butt joints. 8. Indicate location of joints, accessories and accessory type on architectural drawings.

F. Fire Protection1. “One Coat” Stuccos: refer to ICC ESR 2323 or other Sto listed “one coat” stucco ESR’s

for limitations that apply with respect to construction Type and/or fire-resistive rated construction.

2. ASTM C 926 Compliant Stuccosa. Provide 15 minute thermal barrier, typically minimum ½ inch thick interior gypsum wall board, to separate foam plastic insulation from interior.b. For noncombustible Type Construction:

i. Provide full width firestops at floor lines, typically 4 pcf semi-rigid mineral wool, where metal framing runs continuously past floor line.ii. Provide minimum ¾ inch (19 mm) stucco thickness.

c. Refer to Sto Details for 1-hour rated non-load bearing fire-resistive rated wall assembly and provide minimum ¾ (19 mm) inch stucco thickness.

G. Stucco Thickness1. Application to Metal Plaster Bases:

a. Minimum stucco thickness shall be ¾ inch (19 mm) for ASTM C 926 compliant stucco.

b. Stucco thickness shall not exceed 7/8 inch (22 mm).2. Stucco shall be applied in two uniform coats (including “one coat” stuccos),scratch and

brown coat, to achieve the prescribed thickness. 3. Thickness shall be uniform throughout the wall area.

1.04 PERFORMANCE REQUIREMENTSA. Continuous Insulation

1. Compliant with ASTM C 578 Type IV requirements

B. Waterproof Air Barrier1. Compliant with ICC ES Acceptance Criteria AC 212 (ICC ESR 1233)2. Material Air Leakage Resistance, ASTM E 2178: less than 0.02 L/s·m2

3. Assembly Air Leakage Resistance, ASTM E 2357: less than 0.2 L/s·m2

4. Water Vapor Permeance, ASTM E 96, Method B: a. Joint Treatment: 7.10 perms [408 ng/(Pa·s·m2)]b. Waterproof Coating: 14.9 perms [856 ng/(Pa·s·m2)]

5. Surface Burning, ASTM E 84: Flame Spread less than 25, Smoke Developed, less than 450, Class A Building Material

6. Tensile Adhesion, ASTM C 297:Gypsum Sheathing, exceeds strength of substratePlywood, > 85 psi (590 kPa)OSB, > 30 psi (206 kPa)

7. VOC, calculation:a. Less than 100 g/Lb. Compliant with US EPA 40 CFR 59 for waterproofing/sealerc. Compliant with South Coast AQMD Rule 1113 for waterproofing/sealer

C. Drainage Mat


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1. Surface Burning, ASTM E 84: Flame Spread less than 25, Smoke Developed less than 450, Class A Building Material

D. Stucco Base1. Stucco scratch and brown coat material in compliance with ASTM C 926 and

manufactured or listed by Sto Corp. (see Addendum)

E. Primers1. Alkaline Resistant Primer for freshly placed (minimum 4 day old) stucco surfaces:

a. Resistant to alkaline surfaces with pH of 13 or lessb. Surface Burning, ASTM E 84: Flame Spread less than 25, Smoke Developed less than 450, Class A building material c. VOC: less than 50 g/L, compliant with South Coast AQMD Rule 1113 for architectural coatings

F. Finishes1. Silicone Enhanced Elastomeric Finish

a. Accelerated Weathering, ASTM G 154: 2000 hours, no blistering, checking cracking, crazing, or other deleterious effectsb. Water Vapor Permeability, ASTM E 96, Method B: > 10 perms [(574 ng/(Pa·s·m2)]c. Surface Burning, ASTM E 84: Flame Spread less than 25, Smoke Developed less than 450, Class A building material d. VOC: less than 50 g/L, compliant with South Coast AQMD Rule 1113 for architectural coatings

1.06 SUBMITTALSA. Manufacturer's specifications, details, installation instructions and product data.B. Manufacturer’s code compliance report and UL Listing for continuous insulationC. Manufacturer’s code compliance report for air barrier and water-resistive barrierD. Manufacturer’s code compliance report for stucco where ICC listed one coat stucco is usedE. Manufacturer's standard warrantyF. Samples for approval as directed by architect or ownerG. Fastener manufacturer’s pull-out or withdrawal capacity testing for frame and solid substratesH. Prepare and submit project-specific details (when required by contract documents)

1.07 QUALITY ASSURANCEA. Manufacturer requirements

1. Stucco and air barrier products manufacturer for a minimum of twenty (20) years.2. Stucco finish products and waterproof air barrier products manufactured under ISO

9001:2008 Quality System and 14001:2004 Environmental Management System.

B. Contractor requirements1. Licensed, insured and engaged in application of portland cement stucco for a minimum of

three (3) years.2. Knowledgeable in the proper use and handling of Sto materials, or equal.3. Employ skilled mechanics who are experienced and knowledgeable in portland cement

stucco application, and familiar with the requirements of the specified work.4. Successful completion of minimum of three (3) projects of similar size and complexity to

the specified project.5. Provide the proper equipment, manpower and supervision on the job site to install the

system in compliance with Sto's published specifications and details and the project plans and specifications.


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C. Insulation board manufacturer requirements1. Listed by an approved agency. Label insulation board with information required by Sto, the

approved listing agency, and the applicable building code.

D. Testing 1. Construct full-scale mock-up of typical stucco/window wall assembly with specified tools

and materials and test air and water infiltration and structural performance in accordance with ASTM E 283, E 331 and E 330, respectively, through independent laboratory. Mock-up shall comply with requirements of project specifications. Where mock-up is tested at job site maintain approved mock-up at site as reference standard. If tested off-site accurately record construction detailing and sequencing of approved mock-up for replication during construction.

2. Conduct air barrier adhesion testing in accordance with ASTM D 4541.3. Conduct air barrier assembly testing in accordance with ASTM E 783.4. Verify adequacy of pull-out or withdrawal capacity of fasteners used for frame construction

with manufacturer in relation to negative design wind pressures.5. Conduct pH testing to check stucco surface alkalinity before application of primer or finish

materials. Where alkaline resistant primer is used pH testing may be waived.6. Conduct wet sealant adhesion testing in accordance with sealant manufacturer’s field

quality control test procedure. 7. Notify design professional minimum 7 days prior to testing.

E. Inspections1. Provide independent third party inspection where required by code or contract documents.2. Conduct inspections in accordance with code requirements and contract documents.

1.08 DELIVERY, STORAGE AND HANDLINGA. Deliver all materials in their original sealed containers bearing manufacturer's name and

identification of product.B. Protect insulation materials from prolonged UV exposure, keep away from sources of heat, sparks,

flame, flammable or volatile materials. Store on a clean, flat surface, off the ground in a dry area. C. Protect coatings (pail products) from freezing and temperatures in excess of 90F (32 C). Store

away from direct sunlight.D. Protect portland cement based materials (bag products) from moisture and humidity. Store under

cover off the ground in a dry location.E. Handle all products as directed on labeling.

1.09 PROJECT/SITE CONDITIONSA. Maintain ambient and surface temperatures above 40F (4C) during application and for 24 hours

after set of stucco, and application of waterproof air barrier and finish materials.B. Provide supplementary heat for installation in temperatures less than 40F (4C) such that material

temperatures are maintained as in 1.09A. Prevent concentration of heat on uncured stucco and vent fumes and other products of combustion to the outside to prevent contact with stucco.

C. Prevent uneven or excessive evaporation of moisture from stucco during hot, dry or windy weather. For installation under any of these conditions provide special measures to properly moist cure the stucco. Do not install stucco if ambient temperatures are expected to rise above 100ºF (38ºC) within a 24 hour period.

D. Provide protection of surrounding areas and adjacent surfaces from application of materials.

1.10 COORDINATION/SCHEDULING A. Protect continuous insulation from prolonged UV exposure. Protect with wall covering within 60

days of installation.


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B. Protect sheathing from climatic conditions to prevent weather damage until the installation of the waterproof air barrier.

C. Install diverter flashings wherever water can enter the wall assembly to direct water to the exterior.D. Coordinate installation of foundation waterproofing, roofing membrane, windows, doors and other

wall penetrations to provide a continuous air barrier and continuous moisture protection. Provide protection of rough openings before installing windows, doors, and other penetrations through the wall and provide sill flashing. Coordinate installation of waterproof air barrier components with window and door installation to provide weather proofing of the structure and to prevent moisture infiltration and excess air infiltration.

E. Install window and door head flashing immediately after windows and doors are installed.F. Protect waterproof air barrier with stucco cladding within 180 days of installation.G. Protect drainage mat with stucco cladding within 30 days of installation.H. Commence the stucco installation after completion of all floor, roof construction and other

construction that imposes dead loads on the walls to prevent excessive deflection (and potential cracking) of the stucco.

I. Sequence interior work such as drywall installation prior to stucco installation to prevent stud distortion (and potential cracking) of the stucco.

J. Provide site grading such that the stucco terminates above earth grade minimum 4 inches (100 mm) and above finished grade (pavers/sidewalk) minimum 2 inches (51 mm). Provide increased clearance in freeze/thaw climate zones.

K. Install copings and sealant immediately after installation of the stucco and when finish coatings are dry.

L. Attach penetrations through stucco to structural support and provide air tight and water tight seals at penetrations.

1.11 WARRANTYA. Provide manufacturer's standard warranty.

PART 2 PRODUCTS

2.01 MANUFACTURERSA. Basis of Design: Sto Corp., 3800 Camp Creek Parkway, Building 1400, Suite 120. Atlanta, GA

30331. Refer to Division 1 for substitution requirements.B. See Addendum for list of stucco base material manufacturers included in the Sto warranty

2.02 WATERPROOF AIR BARRIERA. Basis of Design Product: StoGuard-- fluid applied waterproof air barrier for concrete masonry

substrates consisting of multiple compatible components:1. Sto Gold Fill -- ready mixed acrylic based flexible joint treatment for rough opening

protection, joint treatment of wall sheathing, CMU crack repair, and connections with flashing

2. Sto EmeraldCoat -- ready mixed flexible waterproof coating for wall sheathing, concrete and CMU wall surfaces

3. StoGuard Mesh-- nominal 4.2 oz/yd2 (142 g/m2), self-adhesive, flexible, symmetrical,interlaced glass fiber mesh, with alkaline resistant coating for compatibility with Sto materials (used with Sto Gold Fill® to reinforce rough openings, inside and outside corners, sheathing joints, and connections with flashings)

4. StoGuard Fabric—nonwoven cloth reinforcement used with Sto EmeraldCoat to treat sheathing joints, inside and outside corners and rough openings5. StoGuard RediCorner—a preformed fabric piece used in the corners of rough openings in tandem with StoGuard Fabric for quicker installation6. StoGuard Tape – self adhering rubberized asphalt tape for rough opening protection

in wood or metal frame construction, and transition detailing (refer to Sto Details)


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7. StoGuard Primer – primer for use with StoGuard Tape8. StoGuard Transition Membrane - flexible air barrier membrane for continuity at transitions:

sheathing to foundation, dissimilar materials (CMU to frame wall), wall to balcony floor slab or ceiling, flashing shingle lap transitions, floor line deflection joints, masonry control joints, and through wall joints in masonry or frame construction.

9. StoGuard RapidSeal – one component quick drying waterproof air barrier materialfor rough opening protection, sheathing joints (with StoGuard Mesh), CMU crack repair, and transition detailing, and for sealing fish mouths, wrinkles, seams, gaps, holes, or other voids in StoGuard air barrier materials (refer to Sto Details).

2.03 CONTINUOUS BUILDING INSULATIONA. Basis of Design Product: Sto Insul-X – Type IV XPS rigid insulation board in compliance with

ASTM C 578. See ICC ESR 2142. Insulation Thickness: 2”.

2.04 SPRAY FOAM ADHESIVE, CI SEAM AND GAP FILLERA. Basis of Design Product: Sto TurboStick – single component polyurethane spray foam adhesive for

attaching foam insulation and filling seams and gaps in insulation board surface.

2.05 WATER-RESISTIVE BARRIERA. Minimum No. 15 asphalt saturated felt complying with ASTM D 226, Type 1, or one layer of Grade D kraft building paper, or paper-backed stucco lath conforming to 2.07.

2.06 DRAINAGE MATA. Basis of Design Product: Sto DrainScreen – nominal ¼” (6 mm) tangled filament nylon core

drainage mat with fabric facing.

2.07 LATH A. Minimum 2.5 lb./yd2 (1.4 kg/m2) self-furred galvanized steel diamond mesh metal lath in compliance

with ASTM C 847 . Structalath Twin Trac by Structawire Corp. is basis of design product.

2.08 MECHANICAL FASTENERS FOR METAL LATHA. Non-corroding fasteners in compliance with AISI S200 – 2007 and ASTM C 1513: Provide

fasteners for CMU wall substrate, which shall comply with required wind loads and all applicable codes.

B. Tie Wire—18 gauge galvanized and annealed low-carbon steel in compliance with ASTM A 641 with Class I coating.

2.09 ACCESSORIES

A. Weep screed, casing bead, corner bead, corner lath, expansion and control joint accessories. All accessories shall meet the requirements of ASTM C 1063 and its referenced documents1. Galvanized metal in compliance with ASTM A 653 with G60 coating.

B. All accessories shall have perforated or expanded flanges and shall be designed with grounds for the specified thickness of stucco.

2.10 JOB MIXED INGREDIENTS

A. Water: clean and potable.B. Sand: in compliance with ASTM C 897 or C 144, for use with one coat and C 926 stucco

concentrates

2.11 STUCCO


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C. Basis of Design Product: STO 108 Powerwall Scratch & Brown: portland cement-based stucco concentrate in compliance with ASTM C 926.

2.12 FOAM BUILD-OUTSA. Adhesive and Base Coat

1. Basis of Design Product: Sto BTS Xtra - light weight one component polymer modified cement-based extra high build base coat material

B. Foam Insulation Board1. Basis of Design Product: Sto EPS Insulation Board--nominal 1.0 lb/ft3 (16 kg/m3)

Expanded Polystyrene (EPS) Insulation Board in compliance with ASTM C 578 Type I requirements, and ASTM E 2430. Thickness: 2”.

C. Reinforcing Mesh 1. Basis of Design Product: Sto Mesh--nominal 4.5 oz./yd2 (153 g/m2), symmetrical,

interlaced open-weave glass fiber mesh treated with alkaline resistant coating for compatibility with Sto materials

2. Basis of Design Product: Sto Detail Mesh--nominal 4.2 oz/yd2 (143 g/m2), flexible, symmetrical, interlaced open-weave glass fiber fabric treated with alkaline resistant coating for compatibility with Sto materials (used for standard foam backwrapping and aesthetic detailing).

2.14 PRIMER A. Basis of Design Products: Sto Hot Prime—acrylic based primer/sealer for freshly placed (minimum

4 day old) and high pH stucco surfaces.

2.15 FINISH COAT – To be selected by Architect.A. Stolit Lotusan Finish – integrally colored, factory blended textured Lotus-Effect Technology finish

with graded marble aggregateB. Sto Powerflex Silco Finish – integrally colored, factory blended, silicone enhanced acrylic textured

finish with graded marble aggregateC. Sto Powerflex Finish – integrally colored, factory blended, elastomeric textured finish with graded

marble aggregateD. StoPowerwall Finish – integrally colored, factory blended, flexible acrylic textured finish with

graded marble aggregate.E. Stolit Finish – integrally colored, factory blended, acrylic textured finish with graded marble

aggregateF. Sto Essence DPR Finish - integrally colored, factory blended, acrylic textured finish with graded

marble aggregateG. Sto Powercryl Finish - integrally colored, factory blended, acrylic textured finish with graded marble

aggregate

2.16 MIXINGA. Basis of Design Product: StoGuard

1. Sto Gold Fill-- mix with a clean, rust-free electric drill and paddle to a uniform consistency. Do not thin, or dilute with water.

2. Sto EmeraldCoat-- mix with a clean, rust-free electric drill and paddle to a uniform consistency. Do not thin, or dilute with water.

B. Basis of Design Product: StoPowerwal Stucco


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1. 108 Powerwall Scratch & Brown – refer to mix instructions on packaging. USE ONLY THE AMOUNT OF WATER NECESSARY FOR A WORKABLE MIX. Use of excess water is detrimental to performance.

C. Adhesive and Base Coats for Sto Armor Guard and Foam Build-outs: 1. Refer to applicable Sto Product Bulletin for selected adhesive/base coat material(s).

D. Primer--mix with a clean, rust-free high speed mixer to a uniform consistency.E. Finish--mix with a clean, rust-free high speed mixer to a uniform consistency. A small amount of

water (up to 12 ounces [0.4 L]) may be added to adjust workability. Limit addition of water to amount needed to achieve the finish texture.

F. Mix only as much material as can readily be used.G. Do not add lime, anti-freeze compounds, or other additives to any of the materials.

PART 3 EXECUTION

3.01 ACCEPTABLE INSTALLERSA. Pre-qualify under Quality Assurance requirements of this specification (section 1.07.B).

3.02 EXAMINATIONA. Inspect sheathing surfaces for:

1. Damage and deterioration.2. Moisture damage–-record any areas of moisture damage.

B. Inspect sheathing application for compliance with applicable requirement:1. Glass Mat Faced Gypsum Sheathing in compliance with ASTM C 1177—refer to

manufacturer’s instructions and/or ICC evaluation report, and design requirements for wind load resistance.

2. Exterior Grade and Exposure 1 wood based sheathing—APA Engineered Wood Association E 30.

C. Report deviations from the requirements of project specifications or other conditions that might adversely affect the waterproof air barrier, CI, or stucco installation to the General Contractor. Do not proceed with air barrier, CI, or stucco installation until deviations are corrected.

3.03 SURFACE PREPARATION.A. Sheathing

1. Remove surface contaminants and replace damaged sheathing. 2. Spot surface defects in sheathing with joint treatment (Sto Gold Fill, StoGuard RapidSeal,

or Sto EmeraldCoat).3. Should gaps exceed ⅛ inch (3 mm) up to ¼ inch (6 mm) wide, apply Sto TurboStick into

joints and rasp or shave flush with sheathing surface in preparation for installation of StoGuard.

3. 04 WATERPROOF AIR BARRIER INSTALLATIONA. Transition Membrane Detailing: detail transition areas with StoGuard Transition Membrane to

achieve air barrier continuity. For illustrations of installation, including complex geometriessuch as inside and outside corners, refer to Sto Guide Details (www.stocorp.com).

B. Floor line deflection joints up to 1 inch (25 mm) wide, static joints and transitions – sheathing to foundation, dissimilar materials (CMU to frame wall), flashing shingle lap transitions, wall to balcony floor slab or ceiling:


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1. Apply waterproof coating (Basis of Design: Sto EmeraldCoat) liberally to properly prepared surfaces with brush, roller, or spray.

2. Place pre-cut lengths of StoGuard Transition Membrane centered over the transition in the wet coating. At changes in plane crease the membrane and similarly place the membrane material in the wet coating.

3. Immediately top coat the membrane with additional coating and apply pressure with brush or roller to fully embed the membrane in the coating and achieve a smooth and wrinkle-free surface without gaps or voids.

4. Apply coating liberally along all top horizontal edges on walls and along all edges on balcony floor slabs to fully seal the edges.

5. Overlap minimum 2 inches (51 mm) at ends and adhere lap seams together with coating. Shingle lap vertical seams and vertical to horizontal intersections with minimum 2 inch (51 mm) overlap.

C. Movement joints up to 1 inch (25 mm) wide and up to + 50% movement: masonry control joints, through wall joints in masonry or frame construction1. Insert backer rod sized to friction fit in the joint (diameter 25% greater than joint width). 2. Recess the backer rod uniformly from the face of the joint 1/2 inch (13 mm).3. Apply the waterproof coating liberally to properly prepared surfaces with brush, roller, or

spray along each side of the joint. 4. Immediately place the membrane by looping it into the joint against the backer rod surface

to provide slack. 5. Embed the membrane in the wet coating along the sides of the joint by top coating with

additional coating material and applying pressure with a brush or roller.

D. After the membrane installation is complete and the waterproof coating is dry:

1. Apply a final liberal coat of the waterproof coating to all top horizontal edges on walls to ensure waterproofing integrity. Similarly apply coating at all edges on balcony floor slabs.

2. Inspect the installed membrane for fish mouths, wrinkles, gaps, holes or other deficiencies. Correct fish mouths or wrinkles by cutting, then embedding the area with additional coating applied under and over the membrane.

3. Seal gaps, holes, and complex geometries at three dimensional corners withStoGuard RapidSeal.

E. Reinforcement Options for Rough Opening Protection and Sheathing Joints1. Basis of Design Product: StoGuard Mesh with Sto Gold Fill: StoGuard Mesh is a “self-

stick” glass fiber reinforcing mesh with adhesive on one side to facilitate placement of the mesh and installation of Sto Gold Fill over the mesh. Place minimum 4 inch (101 mm)wide mesh at sheathing joints and minimum 9 inch (152 mm) wide mesh at rough openings and inside and outside corners. Immediately apply Sto Gold Fill by spray or trowel over the mesh and trowel smooth. Protect from rain and freezing until dry.

F. Surface Defects and Fasteners in Sheathing:1. Spot surface defects such as knots and checks in plywood sheathing with Sto Gold Fill or

StoGuard RapidSeal or an additional layer of Sto EmeraldCoat.2. Spot fasteners with Sto EmeraldCoat, Sto Gold Fill or StoGuard RapidSeal. 3. Protect from rain and freezing until dry.

G. Sheathing Surface Waterproofing:1. Apply Sto EmeraldCoat by spray or roller over sheathing surface, including the dry joint

treatment, to a uniform wet mil thickness of 10 mils in one coat. Use ½ inch (13 mm) nap roller for plywood. Use ¾ inch (19 mm) nap roller for OSB and glass mat faced gypsum


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sheathing. Protect from rain and freezing until dry. Note: no back rolling is required for spray applications over sheathing. OSB sheathing may require touch-up with a second coat of Sto EmeraldCoat where wood strands are raised from the surface. Inspect surface after initial application of Sto EmeraldCoat and touch-up as needed.

2. Coordinate installation of connecting waterproof air barrier components, for example at expansion joints, penetrations, openings, foundation, and roof, with other trades to provide a continuous air tight membrane and moisture protection.

3. Coordinate installation of flashing and other moisture protection components with other trades to achieve complete moisture protection such that water is directed to the exterior, not into the wall assembly, and drained to the exterior at sources of leaks (windows, doors and similar penetrations through the wall assembly).

4. Note that some flashing components such as window or door head flashing, roof sidewall step flashing, flashing at floor lines, and weep screeds at the base of the wall, require a splice strip of reinforcing mesh, joint treatment and waterproofing. This creates a “shingle lap” and proper shedding of water onto the face of the flashing, not behind the flashing.

NOTE: DO NOT ALLOW WATERPROOF AIR BARRIER INSTALLATION TO REMAIN EXPOSED MORE THAN 180 DAYS. PROTECT WITH CI AND STUCCO WALL COVERING PROMPTLY AFTER INSTALLATION.

3.05 CONTINUOUS INSULATION INSTALLATIONA. Attach insulation boards to open framing with corrosion resistant bugle head metal screws and 1-1/4

inch metal lath locks or other corrosion resistant cap fastener. Use only enough fasteners (typically 3 per board mid-span) to temporarily hold the board in place, as lath attachment is intended to permanently hold it in place.

B. Attach in courses against open frame with vertical joints staggered and supported by framing.

C. Cut insulation board in an “L” shape around openings. Tightly abut insulation board joints and interlock inside and outside corners. Trim or rasp board flush for square corners.

D. Seal gaps or open joints with (Basis of Design Product) Sto TurboStick spray foam and rasp or shave flush with surface.

3.06 SHEET WATER-RESISTIVE BARRIER INSTALLATIONA. Install in compliance with the applicable building code requirements for building paper. Lap paper

over foundation weep screed attachment flange, floor line flashing, and window/door head flashings. Refer to Sto Details.

3.07 DRAINAGE MAT INSTALLATION A. Place drainage mat against the wall surface and unroll horizontally with the fabric facing out.

Hammer-tack or staple into CI with corrosion-resistant fasteners. Use as few fasteners as needed to hold the mat in place, starting from the bottom of the wall at base flashing or weep screed and working up. Do not fasten through flashing. Shingle lap fabric at horizontal courses. Shingle lap drainage mat over weep screeds, flashing at floor lines, decks, roof lines, window heads, and other areas where flashing is required, to direct water to the exterior. Butt ends of rolls and vertical seams. Trim around windows, doors, vents, or other penetrations through the wall. Do not install behind window nail flanges. Immediately follow installation of drainage mat with stucco lath installation. Where stucco lath installation will not immediately follow installation of drainage mat, use corrosion-resistant cap nails, cap staples, or cap screws every 16 inches (406 mm) on center along framing for more secure attachment. Cover drainage mat with stucco within 30 days of installation.

3.08 STUCCO INSTALLATION


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After satisfactory inspection of surfaces and correction of any deviations from specification requirements commence the stucco installation as described below:A. Installation over StoGuard/Sto DrainScreen protected frame construction with sheathing:

1. Weep Screed Installationa. Install foundation weep screed at the base of the wall securely to solid substrate or

framing with the appropriate fastener. Locate foundation weep screed so that it overlaps the joint between the foundation and framing by a minimum of 1inch (25 mm). Locate the foundation weep screed nosing minimum 4 inches (100 mm) above earth grade, 2 inches (51 mm) above finished grade (paved surfaces, for example). Lap waterproof air barrier, sheet water-resistive barrier, and drainage mat over the weep screed attachment flange.

2. Casing Bead and Two Piece Expansion Joint Installationa. Install casing beads at stucco terminations—doors, windows and other through wall

penetrations. Install two piece expansion joints (or back-to-back casing beads) at building expansion joints, thru-wall joints in concrete or CMU, where the stucco is to be installed over dissimilar construction or substrates, at changes in building height, at floor lines, columns, and cantilevered areas. Install full accessory pieces where possible and avoid small pieces. Seal adjoining pieces by embedding ends in sealant. Abut horizontal into vertical joint accessories. Attach at no more than 7 inches (178 mm) into solid substrate/framing with appropriate fasteners.

3. Lath Installationa. Diamond Mesh Metal Lath

i. General--install metal lath with the long dimension at right angles to structural framing (horizontally on solid substrates). Terminate lath at expansion joints. Do no install continuously at joints.

ii. Seams/Overlaps--overlap side seams minimum 1/2 inch (13 mm) and end seams minimum 1 inch (25 mm). Stagger end seams. Overlap casing beads and expansion joints minimum 1 inch (25 mm) over narrow wing accessories, minimum 2 inches (51 mm) over expanded flange accessories. Do not install lath continuously beneath expansion joints.

iii. Attachment--fasten securely through sheathing into structural framing at 6 inches (152 mm) on center maximum vertically and 16 inches (406 mm) on center horizontally*. Wire tie at no more than 9 inches (225 mm) on center at: side laps, accessory overlaps, and where end laps occur between supports.

b. Paper-backed lath—follow installation as for diamond mesh metal lath. Lap lath over lath, not paper to lath overlap. For horizontal overlaps the paper backing must lap shingle style behind the lath to lath overlap.

4. One Piece Expansion Joint Installationa. Install one piece expansion joints at through wall penetrations, for example, above and

below doors and windows. Install one piece expansion joints at every 144 ft2 (13 m2). Wire tie one piece expansion joints to lath at no more than 7 inches (178 mm) on center. Seal adjoining pieces by embedding ends in sealant. Make certain lath is DISCONTINUOUS at or beneath joints.

5. Inside and Outside Corners a. Install corner lath at inside corners and corner bead at outside corners over lath. Attach

through lath into solid substrate or framing at no more than 7 inches (178 mm) on center with appropriate fasteners.

6. Stucco Installation


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a. Scratch Coat: apply stucco with sufficient pressure to key into and embed the metal lath. Apply sufficient material, 3/8 or ½ inch (9 or 12 mm), to cover the metal lath and to permit scoring the surface. Score the stucco upon completion of each panel in preparation for a second coat. Score horizontally.

b. Brown Coat: as soon as the first coat is firm enough to receive the second coat without damage, apply the second coat. Alternatively, moist cure the first coat up to 48 hours and dampen the scratched surface with water immediately before applying the second coat. Apply the second coat with sufficient pressure to ensure intimate contact with the first coat and as needed to bring the stucco to a uniform thickness that matches the grounds of the accessories. Use a rod or straight edge to bring the surface to a true, even plane. Fill depressions in plane with stucco. Final thickness of stucco shall be minimum ¾ inch (19 mm) for C 926 compliant stucco. Stucco thickness shall be uniform throughout the wall area and shall not exceed 3/4 inch (19 mm). Stucco thickness shall be ¾ inch (19 mm) for Noncombustible Type construction and/or Fire-Resistive Rated wall construction.

c. After the stucco has become slightly firm float the surface lightly with a darby or wood float to densify the surface and to provide a smooth, even surface. The proper time to float is when the wood float no longer sticks to the surface of the stucco.

d. Moist cure after the stucco has set by lightly fogging for at least 48 hours. Fog as frequently as required during the 48 hour period to prevent loss of moisture from the stucco. Avoid eroding the stucco surface with excess moisture. If relative humidity exceeds 75% the frequency of moist curing can be diminished.

B. Foam Build-Outs1. Where foam build-outs terminate at a dissimilar material such as a window, door or other

non-stucco surface, backwrap the foam build-out by installing detail mesh onto the terminating edge of the stucco. Embed the mesh in the foam adhesive. Allow the mesh to dangle until the backwrapping procedure is completed (B4).

2. Install foam build-outs directly over hardened stucco with cementitious foam trim adhesive. Apply adhesive with the appropriate size notched trowel to the back of the insulation board and immediately place build-out in the proper location on the wall. Press firmly into place and trim or tool excess adhesive from ends and edges of foam trim for a smooth void-free connection to the stucco substrate.

3. After the adhesive has cured sufficiently to hold the build-out firmly in place, rasp the entire foam surface smooth.

4. Complete the backwrapping procedure by applying the cementitious foam trim base coat to the exposed edges of the foam build-out and minimum 2-1/2 inches (64 mm) onto the face. Pull the backwrap mesh around the foam build-out and fully embed it into the base coat. Use a corner trowel for neat straight corners.

5. Apply the cementious base coat to the foam build-out and approximately 3 inches (76 mm) onto the adjacent stucco surfaces to an approximate thickness of 1/8 inch (3 mm). Immediately embed the reinforcing mesh in the wet base coat. Trowel from the center to the edges of the mesh to avoid wrinkles and remove excess base coat. Overlap mesh seams minimum 2-1/2 inches (64 mm). Overlap mesh onto adjacent stucco wall surfaces minimum 2-1/2 inches (64 mm) at terminations of the foam build-out and feather onto the stucco wall surface. Alternatively, If Armor Guard is used apply Armor Guard with its reinforcing mesh continuously from the stucco wall surface over foam build-outs (refer to 3.08 C).

D. Primer Installation 1. Sto Hot Prime—Moist cure stucco for a minimum of 48 hours. Allow stucco to dry an

additional 48 hours, then apply primer evenly with brush, roller or proper spray equipment


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over the clean, dry stucco and foam build-outs, and allow to dry. Final age of primed stucco application must be minimum 7 days before application of finish.

2. Sto Primer Sand—Moist cure stucco for a minimum of 48 hours. Wait until stucco is 28 days old or the pH level of the surface is below 10 before applying primer. Final age of primed stucco application must be minimum 28 days before application of finish or pH must be below 10.

3. Sto Primer Smooth— Moist cure stucco for a minimum of 48 hours. Wait until stucco is 28 days old or the pH level of the surface is below 10 before applying primer. Final age of primed stucco application must be minimum 28 days before application of finish or the pH must be below 10.

E. Finish Installation1. Apply finish to minimum 28 day old stucco or primed stucco and foam build-outs, or

when pH of stucco surface is less than 10. If Sto Hot Prime is used as the primer the primed stucco/foam build-out surfaces need only be minimum 7 days old. Apply finish by spraying or troweling with a stainless steel trowel, depending on the finish specified. Follow these general rules for application of finish:a. Avoid application in direct sunlight.b. Apply finish in a continuous application, and work a wet edge towards the unfinished

wall area. Work to an architectural break in the wall before stopping to avoid cold joints.

c. Weather conditions affect application and drying time. Hot or dry conditions limit working time and accelerate drying. Adjustments in the scheduling of work may be required to achieve desired results; cool or damp conditions extend working time and retard drying and may require added measures of protection against wind, dust, dirt, rain and freezing. Adjust work schedule and provide protection.

d. Float “R” (rolled or swirl texture) finishes with a plastic float to achieve their rilled texture

e. Do not install separate batches of finish side-by-side.f. Do not apply finish into or over sealant joints. Apply finish to outside face of wall only.g. Do not apply finish over irregular or unprepared surfaces, or surfaces not in compliance

with the requirements of the project specifications.h. Do not install finish over high pH (> 10) stucco surfaces or surfaces that have not been

fully cured.

3.09 PROTECTIONA. Provide protection of installed materials from water infiltration into or behind them.B. Provide protection of installed stucco from dust, dirt, precipitation, and freezing.C. Provide protection of installed primer and finish from dust, dirt, precipitation, freezing and

continuous high humidity until fully dry.D. Provide sealant and backer material at stucco terminations to protect against air, water and insect

infiltration. Provide weeps at floor lines, window and door heads, and other areas to conduct water to the exterior.

3.10 CLEANING, REPAIR AND MAINTENANCEA. Clean and maintain the stucco finish for a fresh appearance and to prevent water entry into and

behind the stucco. Repair cracks, impact damage, spalls or delamination promptly.B. Maintain adjacent components of construction such as sealants, windows, doors, and flashing, to

prevent water entry into the wall assembly. C. Refer to Sto reStore Repair and Maintenance Guide (reStore Program) for detailed information on

stucco restoration - cleaning, repairs, recoating, resurfacing and refinishing, or re-cladding.

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