PW_25-13A_Napa_Library_Building_Maintenance_Project_Specs.pdf

NAPA COUNTY

DEPARTMENT OF PUBLIC WORKS

1195 THIRD STREET, ROOM 101

NAPA, CALIFORNIA 94559

TECHNICAL SPECIFICATIONS

FOR

NAPA LIBRARY BUILDING MAINTENANCE

PROJECT

RDS 25-13A

Contractor shall possess a Class B license at the time of contract award, registered with the State of California Department of Industrial Relations at the time of Bid Opening

LAST DAY FOR QUESTIONS: 5:00 PM July 13, 2026 BID OPENING: 11:30 AM July 23, 2026

Approved Juan S. Arias County Engineer RCE 63365

09/30/26

PROJECT MANUAL

for epairs

Prepared by:

12 Walnut Street

Nacht & Lewis Architects 600 Q Street, Suite 100

Sacramento, California 95811 Project No. Y2229.00

Bid Set

January 13, 2026

NAPA COUNTY

Napa, CA 94559

Napa County located at:

Library Structural, Paint & Associated Repairs

SIGNATURE PAGE

Napa County Library Maintenance PW 26-xx

PROJECT MANUAL AND SPECIFICATIONS

FOR

NAPA COUNTY

Napa County Library Maintenance

PAINT & ROOFING REPAIRS, PW 25-13A

SIGNATURE PAGE

Owner:

Napa County Department of Public Works 11956 Thirds Street, Suite 101 Napa, CA 94559

Architect:

Nacht & Lewis Architects 600 Q Street, Suite 100 Sacramento, CA 95811

(916) 329-4000 Michael Parrott - AIA California Registration C-27624

Structural Engineer:

Buehler 600 Q Street, Suite 200 Sacramento, CA 95811

(916) 443-0303 Krista J. Looza California Registration S-5575

Lorenzo Lopez - AIA California Registration C-27981

Brian S. Wiens, SE California Registration S-6259

TABLE OF CONTENTS

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TABLE OF CONTENTS

Cover Page Signature Page Table of Contents

TECHNICAL SPECIFICATIONS

DIVISION 02 EXISTING CONDITIONS

02 41 19 Selective Demolition

PROJECT MANUAL AND SPECIFICATIONS

FOR

NAPA COUNTY

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TABLE OF CONTENTS

Napa County Library Maintenance Paint/Roof Repairs

DIVISION 03 CONCRETE

03 01 00 Concrete Maintenance

END OF TABLE OF CONTENTS

DIVISION 09 FINISHES

09 24 00 Cement Plaster Repair 09 96 52 Elastomeric Coatings09 91 13 Exterior Painting

07 62 00 Sheet Metal Flashing and Trim 07 71 23 Gutters and Related Flashings 07 90 00 Joint Sealers

DIVISION 07 THERMAL AND MOISTURE CONTROL

SELECTIVE DEMOLITION

02 41 19

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SECTION 02 41 19

SELECTIVE DEMOLITION

PART 1 � GENERAL

1.01 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.02 SUMMARY

A. Section Includes:

1. Demolition and removal of selected portions of building or structure.

2. Salvage of existing items to be reused or recycled.

1.03 DEFINITIONS

A. Remove: Detach items from existing construction and dispose of them off-site unless indicated to be salvaged or reinstalled.

B. Remove and Salvage: Detach items from existing construction, in a manner to prevent damage, and deliver to Owner ready for reuse.

C. Remove and Reinstall: Detach items from existing construction, in a manner to prevent damage, prepare for reuse, and reinstall where indicated.

D. Existing to Remain: Leave existing items that are not to be removed and that are not otherwise indicated to be salvaged or reinstalled.

E. Dismantle: To remove by disassembling or detaching an item from a surface, using gentle methods and equipment to prevent damage to the item and surfaces; disposing of items unless indicated to be salvaged or reinstalled.

1.04 MATERIALS OWNERSHIP

A. Unless otherwise indicated, demolition waste becomes property of Contractor.

B. Historic items, relics, antiques, and similar objects including, but not limited to, cornerstones and their contents, commemorative plaques and tablets, and other items of interest or value to Owner that may be uncovered during demolition remain the property of Owner.

C. Carefully salvage in a manner to prevent damage and promptly return to Owner.

1.05 PREINSTALLATION MEETINGS

A. Predemolition Conference: Conduct conference at Project site.

1. Inspect and discuss condition of construction to be selectively demolished.

2. Review structural load limitations of existing structure.

3. Review and finalize selective demolition schedule and verify availability of materials, demolition personnel, equipment, and facilities needed to make progress and avoid delays.

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4. Review requirements of work performed by other trades that rely on substrates exposed by selective demolition operations.

5. Review areas where existing construction is to remain and requires protection.

1.06 INFORMATIONAL SUBMITTALS

A. Qualification Data: For refrigerant recovery technician.

B. Engineering Survey: Submit engineering survey of condition of building.

C. Proposed Protection Measures: Submit report, including Drawings, that indicates the measures proposed for protecting individuals and property, for environmental protection, and for noise control. Indicate proposed locations and construction of barriers.

D. Schedule of Selective Demolition Activities: Indicate the following:

1. Detailed sequence of selective demolition and removal work, with starting and ending dates for each activity. Ensure Owner's on-site operations are uninterrupted.

2. Interruption of utility services. Indicate how long utility services will be interrupted.

3. Coordination for shutoff, capping, and continuation of utility services.

4. Use of elevator and stairs.

5. Coordination of Owner's continuing occupancy of portions of existing building and of Owner's partial occupancy of completed Work.

E. Predemolition Photographs or Video: Show existing conditions of adjoining construction, including finish surfaces, that might be misconstrued as damage caused by demolition operations. Submit before Work begins.

F. Statement of Refrigerant Recovery: Signed by refrigerant recovery technician responsible for recovering refrigerant, stating that all refrigerant that was present was recovered and that recovery was performed according to EPA regulations. Include name and address of technician and date refrigerant was recovered.

G. Warranties: Documentation indicating that existing warranties are still in effect after completion of selective demolition.

1.07 CLOSEOUT SUBMITTALS

A. Inventory: Submit a list of items that have been removed and salvaged.

1.08 QUALITY ASSURANCE

A. Refrigerant Recovery Technician Qualifications: Certified by an EPA-approved certification program.

1.09 FIELD CONDITIONS

A. Owner will occupy portions of building immediately adjacent to selective demolition area.

Conduct selective demolition so Owner's operations will not be disrupted.

B. Conditions existing at time of inspection for bidding purpose to be maintained by Owner for practicality.

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C. Notify Architect of discrepancies between existing conditions and Drawings before proceeding with selective demolition.

Retain one of two "Hazardous Materials" paragraphs below or remove all references to hazardous materials. Insert scope of article to include asbestos, PCBs, and other materials if required. Coordinate statements with the General and Supplementary Conditions. See "Hazardous Materials" Article in the Evaluations.

D. Hazardous Materials: It is not expected that hazardous materials will be encountered in the Work.

1. Hazardous materials will be removed by Owner before start of the Work.

2. If suspected hazardous materials are encountered, do not disturb; immediately notify Architect and Owner. Hazardous materials will be removed by Owner under a separate contract.

E. Hazardous Materials: Present in buildings and structures to be selectively demolished. A report on the presence of hazardous materials is on file for review and use. Examine report to become aware of locations where hazardous materials are present.

1. Hazardous material remediation is specified elsewhere in the Contract Documents.

2. Do not disturb hazardous materials or items suspected of containing hazardous materials except under procedures specified elsewhere in the Contract Documents.

3. Owner will provide material safety data sheets for suspected hazardous materials that are known to be present in buildings and structures to be selectively demolished because of building operations or processes performed there.

F. Storage or sale of removed items or materials on-site is not permitted.

G. Utility Service: Maintain existing utilities indicated to remain in service and protect them against damage during selective demolition operations.

1. Maintain fire-protection facilities in service during selective demolition operations.

1.10 WARRANTY

A. Existing Warranties: Remove, replace, patch, and repair materials and surfaces cut or damaged during selective demolition, by methods and with materials and using approved contractors so as not to void existing warranties. Notify warrantor before proceeding.

B. Notify warrantor on completion of selective demolition and obtain documentation verifying that existing system has been inspected and warranty remains in effect. Submit documentation at Project closeout.

1.11 COORDINATION

A. Arrange selective demolition schedule so as not to interfere with Owner's operations.

PART 2 � PRODUCTS

2.01 PERFORMANCE REQUIREMENTS

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A. Regulatory Requirements: Comply with governing EPA notification regulations before beginning selective demolition. Comply with hauling and disposal regulations of authorities having jurisdiction.

B. Standards: Comply with ASSE A10.6 and NFPA 241.

PART 3 - EXECUTION

3.01 EXAMINATION

A. Verify that utilities have been disconnected and capped before starting selective demolition operations.

B. Review Project Record Documents of existing construction or other existing condition and hazardous material information provided by Owner. Owner does not guarantee that existing conditions are same as those indicated in Project Record Documents.

C. Perform an engineering survey of condition of building to determine whether removing any element might result in structural deficiency or unplanned collapse of any portion of structure or adjacent structures during selective building demolition operations.

1. Perform surveys as the Work progresses to detect hazards resulting from selective demolition activities.

D.

E.

3.02 PREPARATION

A. Refrigerant: Before starting demolition, remove refrigerant from mechanical equipment according to 40 CFR 82 and regulations of authorities having jurisdiction.

3.03 UTILITY SERVICES AND MECHANICAL/ELECTRICAL SYSTEMS

A. Existing Services/Systems to Remain: Maintain services/systems indicated to remain and protect them against damage.

B. Existing Services/Systems to Be Removed, Relocated, or Abandoned: Locate, identify, disconnect, and seal or cap off utility services and mechanical/electrical systems serving areas to be selectively demolished.

1. Owner will arrange to shut off indicated services/systems when requested by Contractor.

2. If services/systems are required to be removed, relocated, or abandoned, provide temporary services/systems that bypass area of selective demolition and that maintain continuity of services/systems to other parts of building.

Verify that hazardous materials have been remediated before proceeding with building demolition operations.

Survey of Existing Conditions: Record existing conditions by use of measured drawings.

1. Before selective demolition or removal of existing building elements that will be reproduced or duplicated in final Work, make permanent record of measurements, materials, and construction details required to make exact reproduction.

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3. Disconnect, demolish, and remove photo-voltaic systems, plumbing, and HVAC systems, equipment, and components indicated on Drawings to be removed.

a. Piping to Be Removed: Remove portion of piping indicated to be removed and cap or plug remaining piping with same or compatible piping material.

b. Piping to Be Abandoned in Place: Drain piping and cap or plug piping with same or compatible piping material and leave in place.

c. Equipment to Be Removed: Disconnect and cap services and remove equipment.

d. Equipment to Be Removed and Reinstalled: Disconnect and cap services and remove, clean, and store equipment; when appropriate, reinstall, reconnect, and make equipment operational.

e. Equipment to Be Removed and Salvaged: Disconnect and cap services and remove equipment and deliver to Owner.

f. Ducts to Be Removed: Remove portion of ducts indicated to be removed and plug remaining ducts with same or compatible ductwork material.

g. Ducts to Be Abandoned in Place: Cap or plug ducts with same or compatible ductwork material and leave in place.

3.04 PROTECTION

A. Temporary Protection: Provide temporary barricades and other protection required to prevent injury to people and damage to adjacent buildings and facilities to remain.

1. Provide protection to ensure safe passage of people around selective demolition area and to and from occupied portions of building.

2. Provide temporary weather protection, during interval between selective demolition of existing construction on exterior surfaces and new construction, to prevent water leakage and damage to structure and interior areas.

3. Protect walls, ceilings, floors, and other existing finish work that are to remain or that are ex-posed during selective demolition operations.

4. Cover and protect furniture, furnishings, and equipment that have not been removed.

5. Comply with requirements for temporary enclosures, dust control, heating, and cooling.

B. Temporary Shoring: Design, provide, and maintain shoring, bracing, and structural supports as required to preserve stability and prevent movement, settlement, or collapse of construction and finishes to re-main, and to prevent unexpected or uncontrolled movement or collapse of construction being demolished.

1. Strengthen or add new supports when required during progress of selective demolition.

C. Remove temporary barricades and protections where hazards no longer exist.

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D. Cover all fire alarm devices to remain in area of work not being relocated by project.

Where device is directly affected by scope of work, de-program device from Fire Alarm Control Panel and remove device from room.

3.05 SELECTIVE DEMOLITION, GENERAL

A. General: Demolish and remove existing construction only to the extent required by new construction and as indicated. Use methods required to complete the Work within limitations of governing regulations and as follows:

1. Proceed with selective demolition systematically, from higher to lower level.

Complete selective demolition operations above each floor or tier before disturbing supporting members on the next lower level.

2. Neatly cut openings and holes plumb, square, and true to dimensions required.

Use cutting methods least likely to damage construction to remain or adjoining construction. Use hand tools or small power tools designed for sawing or grinding, not hammering and chopping. Temporarily cover openings to remain.

3. Cut or drill from the exposed or finished side into concealed surfaces to avoid marring existing finished surfaces.

4. Do not use cutting torches until work area is cleared of flammable materials. At concealed spaces, such as duct and pipe interiors, verify condition and contents of hidden space before starting flame-cutting operations. Maintain portable fire-suppression devices during flame-cutting operations.

5. Maintain fire watch during and for at least 2 hours after flame-cutting operations.

6. Maintain adequate ventilation when using cutting torches.

7. Remove decayed, vermin-infested, or otherwise dangerous or unsuitable materials and promptly dispose of off-site.

8. Remove structural framing members and lower to ground by method suitable to avoid free fall and to prevent ground impact or dust generation.

9. Locate selective demolition equipment and remove debris and materials so as not to impose excessive loads on supporting walls, floors, or framing.

B. Site Access and Temporary Controls: Conduct selective demolition and debris-removal operations to ensure minimum interference with roads, streets, walks, walkways, and other adjacent occupied and used facilities.

C. Removed and Salvaged Items:

1. Clean salvaged items.

2. Pack or crate items after cleaning. Identify contents of containers.

3. Store items in a secure area until delivery to Owner.

4. Transport items to Owner's storage area designated by Owner.

5. Protect items from damage during transport and storage.

D. Removed and Reinstalled Items:

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1. Clean and repair items to functional condition adequate for intended reuse.

2. Pack or crate items after cleaning and repairing. Identify contents of containers.

3. Protect items from damage during transport and storage.

4. Reinstall items in locations indicated. Comply with installation requirements for new materials and equipment. Provide connections, supports, and miscellaneous materials necessary to make item functional for use indicated.

E. Existing Items to Remain: Protect construction indicated to remain against damage and soiling during selective demolition. When permitted by Architect, items may be removed to a suitable, protected storage location during selective demolition and cleaned and reinstalled in their original locations after selective demolition operations are complete.

3.06 SELECTIVE DEMOLITION PROCEDURES FOR SPECIFIC MATERIALS

A. Roofing: Remove no more existing roofing than what can be covered in one day by new roofing and so that building interior remains watertight and weathertight.

1. Remove existing roof membrane, flashings, copings, and roof accessories.

2. Remove existing roofing system down to substrate.

3.07 DISPOSAL OF DEMOLISHED MATERIALS

A. Remove demolition waste materials from Project site and dispose of them in an EPA-approved construction and demolition waste landfill acceptable to authorities having jurisdiction.

1. Do not allow demolished materials to accumulate on-site.

2. Remove and transport debris in a manner that will prevent spillage on adjacent surfaces and areas.

3. Remove debris from elevated portions of building by chute, hoist, or other device that will con-vey debris to grade level in a controlled descent.

B. Burning: Do not burn demolished materials.

3.08 CLEANING

A. Clean adjacent structures and improvements of dust, dirt, and debris caused by selective demolition operations. Return adjacent areas to condition existing before selective demolition operations began.

[END OF SECTION 02 41 19]

MAINTENANCE OF CONCRETE

03 01 00

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SECTION 03 01 00

PART 1 – GENERAL

1.01 SUMMARY

A. This Specification shall be read as a whole by all parties concerned. Each Section may contain more or less the complete Work of any trade. The Contractor is solely Responsible to make clear to the Subcontractors the extent of their Work and coordinate overlapping Work.

1.02 SYSTEM DESCRIPTION

The Work of this section shall include furnishing all labor, materials, equipment, and supervision to prepare the surface of the structural concrete members and to install the material as indicated.

1.03 RELATED SECTIONS

A. None.

1.04 REFERENCES

A. Comply with the following unless modified by this specification.

a. ASTM C109/C109M-02 Standard Test Method for Compressive Strength of Hydraulic

Cement Mortars (Using 2-inch. Cube Specimens)

b. ASTM C191-04 Standard Test Method for Time of Setting of Hydraulic Cement by

Vicat Needle

1.05 QUALITY ASSURANCE

A. Contractor qualifications: Contractor shall be qualified in the field of concrete repair and protection with a successful track record of 5 years or more. Contractor shall maintain qualified personnel who have received product training by a manufacturer's representative.

1.06 DELIVERY, STORAGE, AND HANDLING

A. All materials must be delivered in original, unopened containers with the manufacturer's name, labels, product identification, and batch numbers. Damaged material must be removed from the site immediately.

B. Store all materials off the ground and protect from rain, freezing or excessive heat until ready for use.

C. Condition the specified product as recommended by the manufacturer.

1.07 JOB CONDITIONS

A. Environmental Conditions: Do not apply material if it is raining or snowing or if such conditions appear to be imminent. Minimum application temperature 45oF (7oC) and rising.

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B. Protection: Precautions should be taken to avoid damage to any surface near the work zone due to mixing and handling of the specified material.

1.08 SUBMITTALS

A. Submit two copies of manufacturer's literature, to include: Product Data Sheets (PDS), and appropriate Safety Data Sheets (SDS).

B. Submit copy of Certificate of Approved Contractor status by manufacturer.

1.09 WARRANTY

A. Provide a written warranty from the manufacturer against defects of materials for a period of one

B. (1) year, beginning with date of substantial completion of the project.

PART 2 - PRODUCTS

2.01 PRODUCT

A. SikaQuick Smooth Finish, as proposed by Sika Corporation, is considered to conform to the requirements of this specification.

B. Approved Equal

2.02 Materials

A. General

1. fast setting, one component, durable mortar for repairing and re-profiling vertical and overhead concrete surfaces to achieve a smooth finish.

2.03 Performance Criteria

A. Typical Properties

1. Aspect: Light weight mortar

2. Color: Concrete gray

3. Mixing Ratio: 8 - 9 quarts of water per 50 lb. bag

4. Application Thickness: Min: Feather Edge/Max: 1/2”

5. Finishing Time: 1 hour

6. Compressive Strength (ASTM C-109):

a. 1 day @ 73ºF (23ºC) 1,000 psi

7. 28 days @ 73ºF (23ºC) >2,000 psi

8. Shall not re-emulsify when wet.

9. Shall be non-metallic with no added chlorides and shall be pre-blended

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PART 3 – EXECUTION

3.01 SURFACE PREPARATION

Concrete - Concrete/Mortar: Remove all deteriorated concrete, dirt, oil, grease, and all bond-inhibiting materials from surface. After preparation, substrate strength should be verified prior to patch placement.

Substrate should be dry or saturated surface dry (SSD) with no standing water during application.

3.02 MIXING AND APPLICATION

A. Wet down all tools and mixer to be used. Mix mechanically with a low-speed drill (400 - 600 rpm) and mixing paddle or by hand.

B. Mix to a uniform consistency, maximum 3 minutes. Manual mixing can be tolerated only for less than a full unit. Thorough mixing and proper proportioning of the powder and liquid is necessary. Inaccurate proportioning of the powder to liquid will result in a finished product that may not conform with stated properties.

C. Start mixing with 8 - 9 quarts of water per 50 lb. bag. DO NOT EXCEED 9 qts. Adjust the water dosage, if necessary, to achieve the desired consistency. DO NOT OVER WATER.

Over-watering may result in difficulty handling and/or not meeting stated property values. Do not retemper. Clean bucket and mixing equipment in between batches.

3.03 APPLICATION

A. SikaQuick Smooth Finish should be applied in one pass in thicknesses ranging from a true feather edge to 1/2” in depth. Typical working time of the product is 30 minutes at 73°F.

Working time will vary depending on application temperature. In high temperature work environments, cold water should be used to increase working time.

B. Painting: Can be overcoated same day.

C. Once material is in place, as the material hardens, use a trowel to shave or cut the excess material to the desired shape. Material can be sanded and painted the same day.

3.04 CLEANING

A. Clean all tools immediately after use.

B. Clean excess material from surrounding areas immediately.

END OF SECTION 03 01 00

SHEET METAL FLASHING AND TRIM

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SECTION 07 62 00

SHEET METAL FLASHING AND TRIM

PART 1 � GENERAL

1.01 WORK INCLUDED

A. Exterior wall flashings.

B. Roof flashings.

C. Window Flashings.

1.02 RELATED SECTIONS

A.

B.

C.

1.03 REFERENCES

A. ASTM A924 / A924M-16ae1 - General Requirements for Steel Sheet, Metallic Coated by the Hot Dip Process.

B. ASTM B32-08 - Solder Metal.

C. FS SS-C-153 - Cement, Bituminous, Plastic.

D. NRCA (National Roofing Contractors Association) - Roofing Manual.

E. SMACNA - Architectural Sheet Metal Manual.

1.04 SYSTEM DESCRIPTION

A. Work of this Section is to physically protect roofing and exterior from damage that would permit water leakage to building interior.

1.05 QUALITY ASSURANCE

A. Applicator: Company specializing in sheet metal flashing work with five years minimum experience.

1.06 SUBMITTALS

A. Submit shop drawings and manufacturer�s product data, installation instructions and general recommendations for each required material and product under provisions of Section 00700.

B. Describe material profile, jointing pattern, jointing details, fastening methods, and installation details.

C. Samples: Only as directed by Architect.

Section 07 71 23: Gutters and Related Flashings.

Section 07 90 00: Joint Sealers.

Section 09 90 00: Painting: Prime and Finish Painting.

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D. Mockup: Prior to proceeding on work at all windows and/or doors, Contractor shall provide (1) mockup at location chosen by Architect. Contractor shall provide all membranes, flashings, etc. for complete installation for review by Architect.

1.07 STORAGE AND HANDLING

A. Store products under provisions of Section 00 72 00.

B. Stack preformed material to prevent twisting, bending, or abrasion, and to provide ventilation.

C. Prevent contact with materials during storage which may cause discoloration, staining, or damage.

PART 2 � PRODUCTS

2.01 SHEET MATERIALS

A. Galvanized Steel: ASTM A924 / A924M, G90; 24 gage core steel.

2.02 ACCESSORIES

A. Fastener: Galvanized steel or Stainless steel with soft neoprene washers at exposed fasteners. Finish exposed fasteners same as flashing metal.

B. Protective Backing Paint: FS TT-C-494A. Bituminous.

C. Sealant: Type specified in Section 07 90 00.

D. Bedding Compound: Rubber-asphalt type.

E. Plastic Cement: FS SS-C-153, Type I-asphaltic base cement.

F. Solder: ASTM B32; 95-5 Tin Antimony type.

G. Flux: As recommended by sheet metal manufacturer.

H. Reglets: Type as shown on Drawings, compatible with flashing indicated, non-corrosive type.

I. Self-Adhered Flashing: Vycor Plus Self-Adhered Flashing as manufactured by Grace Construction Products, or equal. Product shall be 25 mil thickness, composed of durable, cross-laminated, high-density polyethylene sheet, backed by an aggressive, pressure-sensitive rubberized asphalt adhesive. Width and length as required for complete installation.

2.03 FABRICATION

A. Form sections true to shape, accurate in size, square, and free from distortion or defects.

B. Fabricate cleats and starter strips of same material as sheet, interlockable with sheet.

C. Form pieces in longest practical lengths.

D. Hem exposed edges on underside 1/2 inch (13 mm); miter and seam corners.

E. Form material with flat lock seam.

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F. Solder and seal metal joints. After soldering, remove flux. Wipe and wash solder joints clean.

G. Fabricate corners from one piece with minimum 18-inch-long legs; seam for rigidity, seal with sealant.

H. Fabricate vertical faces with bottom edge formed outward 1/4 inch and hemmed to form drip.

I. Expansion-contraction of sheet metal runs: Provide flat, loose locking slip joint at maximum of ten (10) foot intervals.

J. Separations: Provide for separation of metal from noncompatible metal or corrosive substrates by coating concealed surfaces at locations of contract, with bituminous coating or other permanent separation as recommended by manufacturer or fabricator.

2.04 FINISH

A. Backpaint concealed metal surfaces with protective backing paint to a minimum dry film thickness of 15 mil.

B. Touch-up Paint: "Galvalloy" or "Galvweldalloy".

2.05 ROOF-DRAINAGE SHEET METAL FABRICATIONS

A. Parapet Scuppers: Fabricate scuppers to dimensions required, with closure flange trim to exterior, 4-inch- wide wall flanges to interior, and base extending 4 inches beyond cant or tapered strip into field of roof. Fabricate from the following materials:

1. Aluminum-Zinc Alloy-Coated Steel: 0.028 inch thick.

B. Conductor Heads: Fabricate conductor heads with flanged back and stiffened top edge and of dimensions and shape required, complete with outlet tubes, exterior flange trim,.

Fabricate from the following materials:

1. Aluminum-Zinc Alloy-Coated Steel: 0.028 inch thick.

PART 3 � EXECUTION

3.01 INSPECTION

A. Verify shapes and dimensions of surfaces to be covered.

B. Verify substrates are clean, dry, smooth, and free of defects to the extent needed for sheet metal work.

C. Beginning of installation means acceptance of existing conditions.

3.02 PREPARATION

A. Field measure site conditions prior to fabricating work.

B. Install starter and edge strips, and cleats before starting installation.

C. Install reglets true to lines and levels. Seal top of reglets with sealant.

D. Insert flashings into reglets to form tight fit. Secure in place with plastic wedges at maximum twelve (12) inches on center. Seal flashings into reglets with sealant.

E. Secure flashings in place using concealed fasteners. Use exposed fasteners only in locations approved by Architect.

F. Lock and seal all joints.

G. Apply plastic cement compound between metal flashings and felt flashings.

H. Fit flashings tight in place. Make corners square, surfaces true and straight in planes, and lines accurate to profiles.

I. Solder metal joints watertight for full metal surface contact. After soldering, wash metal clean with neutralizing solution and rinse with water.

J. Seal metal joints watertight.

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3.03 INSTALLATION

A. D. Parapet Scuppers:

1. Continuously support scupper, set to correct elevation, and seal flanges to interior wall face, over cants or tapered edge strips, and under roofing membrane.

2. Anchor scupper closure trim flange to exterior wall and solder to scupper.

3. Loosely lock front edge of scupper with conductor head.

4. Solder exterior wall scupper flanges into back of conductor head.

E. Conductor Heads: Anchor securely to wall, with elevation of conductor head rim at minimum of 1 inch below scupper discharge.

B. Conform to drawing details included in SMACNA and NRCA manual.

C. Insure that items are installed in true and accurate alignment with other items and related work; that joints are accurately fitted; that exposed surfaces are free from dents; that corners are reinforced; that seams are watertight.

D. All work shall be left free of oil, grease, or acid residue, ready to receive painter's finish.

E. Wherever possible, all fasteners shall be concealed. All exposed fasteners shall have neoprene gaskets and be capped with a bead of sealant.

F. Install counterflashings in reglets with continuous bead of sealant.

3.04 TOUCH-UP

A. Where galvanized finish is damaged by fabrication or installation, repair with specified touch-up material, applying in accordance with manufacturer's printed instructions.

[END OF SECTION 07 62 00]

GUTTERS AND RELATED FLASHINGS

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SECTION 07 71 23

GUTTERS AND RELATED FLASHINGS

PART 1 � GENERAL

1.01 SECTION INCLUDES

A. Related flashing.

1.02 RELATED SECTIONS

A. Section 00 72 00: General Conditions.

B. Section 05 50 00: Metal Fabrications.

C. Section 07 62 00: Sheet Metal Flashing and Trim.

D. Section 07 54 19: Single-Ply Roofing System.

E. Section 07 90 00: Sealants.

F. Section 09 90 00: Painting: Field painting of metal surfaces.

1.03 REFERENCES

A. ASTM A924 / A924M-16ae1 General Requirements for Steel Sheet, Metallic-Coated by the Hot Dip Process.

B. FS TT C 494 Coating Compound, Bituminous, Solvent Type, Acid Resistant.

C. SMACNA Architectural Sheet Metal Manual, current edition.

D. AWS - American Welding Society.

1.04 SUBMITTALS

A. Submit under provisions of Section 00 72 00.

B. Shop Drawings: Indicate locations, configurations, jointing methods, welding methods, fastening methods, expansion joint layouts, downspout layout and installation details.

C. Samples: Submit two samples, 12 inches long illustrating component design, finish, color, and configuration.

D. List of certified welders with copy of credentials. See section 05 50 00 for additional information.

1.05 QUALITY ASSURANCE

A. Conform to SMACNA Manual for architectural sheet metal flashing and installation details.

1.06 DELIVERY, STORAGE, AND HANDLING

A. Deliver, store, protect and handle products to site under provisions of Section 00 72 00.

B. Stack pre-formed material to prevent twisting, bending, or abrasion, and to provide ventilation. Slope to drain.

B. Downspouts

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C. Prevent contact with materials during storage which may cause discoloration, staining, or damage.

1.07 COORDINATION

A. Coordinate painting portions prior to installation and the work with downspout discharge pipe inlet.

PART 2 � PRODUCTS

2.01 MATERIALS

A. Galvanized Steel: ASTM A924 / A924M-09a, Grade A, G90 zinc coating.

B. Schedule 10 galvanized pipe.

2.02 COMPONENTS

A. Overflow Flashing: 18-gauge core steel.

2.03 ACCESSORIES

A. Anchorage Devices: SMACNA requirements.

B. Fasteners: Galvanized steel or stainless steel and as specified in Section 05 50 00.

Finish exposed fasteners same as flashing metal.

C. Touch-up Primer: Cold applied zinc-rich type.

D. Protective Back Coating: FS TT C 494, bituminous.

E. Sealant: Type as specified under Section 07 90 00.

2.04 FABRICATION

A. Form overflow flashing in profiles and size indicated, to SMACNA requirements.

C. Fabricate with required connection pieces, joined together.

D. Form sections square, true, and accurate in size, in maximum possible lengths, free of distortion or defects detrimental to appearance or performance. Allow for expansion at joints.

E. Hem all exposed edges of metal.

F. Welding process shall be Metallic Inert Gas (MIG).

G. Weld all shop formed metal joints. Grind exposed joints flush with adjacent surfaces and apply touch-up primer as specified.

H. All joints shall be watertight per SMACNA standards.

2.05 FINISHES

A. Field paint gutters under provisions of Section 09 90 00.

B. Apply bituminous protective backing on surfaces in contact with dissimilar materials.

PART 3 � EXECUTION

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3.01 EXAMINATION

A. Verify that surfaces are ready to receive work.

3.02 INSTALLATION

A. Install gutters and downspouts as shown on drawings. Install expansion joints, additional downspouts and accessories as specified.

B. Field assemble (weld) gutter sections at �ground level� wherever possible and lift into place as one unit.

C. Install gutters level and straight in-line with building. Shim horizontally and vertically as required to level. Installed gutter to have no ponding water more than ¼� deep.

D. Highest point at front of gutter shall be a minimum of 1 inch lower than the back edge of gutter unless shown differently on drawings. See SMACNA Architectural Manual for Gutters.

E. Water test all gutters and downspouts for leaks and ponding in presence of IOR.

F. Flash and seal gutters to downspouts and accessories.

[END OF SECTION 07 71 23]

JOINT SEALERS

07 90 00

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SECTION 07 90 00

JOINT SEALERS

PART 1 � GENERAL

1.01 SECTION INCLUDES

1. Nonstaining silicone joint sealants.

2. Urethane joint sealants.

3. Mildew-resistant joint sealants.

4. Butyl joint sealants.

5. Latex joint sealants.

6. Structural Crack Infill

1.02 RELATED SECTIONS

A. The Drawings and general provisions of the Contract, including General and Supplementary Conditions, apply to this Section.

1.03 REFERENCES

A. ASTM C834-10 - Latex Sealants.

B. ASTM C920-05 - Elastomeric Joint Sealants.

C. ASTM E84-10 - Test Method for Surface Burning Characteristics of Building Materials.

D. ASTM E119-07a - Method for Fire Tests of Building Construction and Materials.

E. ASTM E814-02 - Test Method for Fire Tests of Through Penetration Firestops.

F. FM (Factory Mutual) - Fire Hazard Classifications.

G. UL - Fire Hazard Classifications.

H. UL 263 - Fire Tests of Building Construction and Materials.

I. UL 723 - Test for Surface Burning Characteristics of Building Materials.

J. UL 1479 - Fire Tests of Through-Penetration Firestops.

K. FS TT S 00227 Sealing Compound: Elastomeric Type, Multi-Component.

L. FS TT S 00230 Sealing Compound: Elastomeric Type, Single Component.

M. FS TT S 001543 Sealing Compound, Silicone Rubber Base.

1.04 SUBMITTALS

A. Submit product data indicating sealant chemical characteristics, performance criteria, limitations, and color availability.

B. Submit physical samples.

C. Submit standard color ranges of exposed materials for Architect selection.

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D. Submit manufacturer's installation instructions.

E. Submit VOC information for each product included in submittal.

F. Joint-Sealant Schedule: Include the following information:

1. Joint-sealant application, joint location, and designation.

2. Joint-sealant manufacturer and product name.

3. Joint-sealant formulation.

4. Joint-sealant color.

1.05 QUALITY ASSURANCE

A. Mockups: Install sealant in mockups of assemblies specified in other Sections that are indicated to receive joint sealants specified in this Section. Use materials and installation methods specified in this Section.

B. Manufacturer: Company specializing in manufacturing the products specified in this Section with minimum three years experience.

C. Applicator: Company specializing in applying the work of this section with minimum three years experience, with projects of a similar size and type.

D. Conform to Sealant Water-proofing and Restoration Institute requirements for materials and installation.

E. Prior to installation of joint sealants, field test adhesion to joint substrates.

1. Install joint sealants in 5-foot joint lengths. Allow to cure before testing. Test adhesion by pulling sealant out of joint.

2. Perform field tests for each type of elastomeric sealant and joint substrate.

3. Arrange for tests to take place with joint sealant manufacturer�s technical representative present.

4. Report whether or not sealant in joint connected to pulled out portion failed to adhere to joint substrates or tore cohesively. Include data on pull distance used to test each type of product and joint substrate.

5. Sealants not evidencing adhesive failure from testing, in absence of other indications of non-compliance with requirements, will be considered satisfactory.

Do not use sealants that fail to adhere to joint substrate during testing.

1.06 ENVIRONMENTAL REQUIREMENTS

A. Do not install solvent curing sealants in enclosed building spaces.

B. Maintain temperature and humidity recommended by the sealant manufacturer during and after installation.

C. Do not install sealants under adverse weather conditions or when temperatures are above or below manufacturer's recommended limitations for installation.

D. Deliver materials in the unopened, original containers or unopened packages with manufacturer’s name, labels, product identification, color, expiration period, curing time and mixing instructions for multi-component materials.

E. All adhesives, sealants, and caulks shall have a maximum VOC limit of 250 grams per liter.

1.07 SEQUENCING AND SCHEDULING

A. Coordinate the work of this Section with all Sections referencing this Section.

1.08 WARRANTY

A. Provide two-year warranty for materials and workmanship under provisions of the General Conditions.

B. Warranty: Include coverage of installed sealants and accessories which fail to achieve air tight and watertight seal, exhibit loss of adhesion or cohesion, or do not cure.

PART 2 – PRODUCTS

2.01 SEALANTS

A. Silicone Sealant: Silicone Sealant (use at glazing applications): Sikasil WS-295 “high performance silicone sealant".

B. Interior Building Sealant: Acrylic-emulsion; one-part, non-sag, mildew-resistant.

Complying with ASTM C834-10, formulated to be paintable; Pecora Corp. “AC-20”, Sonneborn “Sonolac”, Tremco Inc. “Tremco Acrylic Latex 834” or approved equal.

C. Sanitary Sealant: One-part mildew-resistant silicone; ASTM C920 Type S; Grade NS Class 25; Uses NT, G, A and O; formulated with fungicide for sealing interior joints with nonporous substrates around ceramic file, showers, sinks and plumbing fixtures; Dow Corning Corp. “786 Mildew Resistant”, or approved equal.

D. Vertical Building Expansion Joints: Joint sealing material shall be a one-component, polyurethane-based non-sag elastomeric sealant. Product shall be Sikaflex HY-150 “hybrid” sealant (paintable). Color shall be chosen from the full range of manufacturer’s standard colors.

E. Sheet Metal Flashings, Trims, Gutters, & Joints: Joint sealing material shall be a premium-grade, high-performance, moisture-cured, 1-component, polyurethane-based, non-sag elastomeric sealant. Product shall be ‘Sikaflex 1a’ as manufactured Sika Corporation, or equal. Color shall be chosen from the full range of manufacturer’s standard colors. Provide Sikaflex 260 Primer at all stainless steel and/or galvanized substrate location for proper adhesion of Sikaflex 1a.

J. Colors of sealants shall be as selected by Architect from manufacturer’s full range of standard colors at time of submittal.

K. Structural Crack Infill: Hilti HY 200 Injectable Mortar Epoxy.

L. Wall-to-concrete walk expansion joint replacement: Expansion joint sealing material shall be a premium-grade, high-performance, moisture-cured, 1-component, polyurethane based, self-leveling sealant. Product shall be Sikaflex+ Self Leveling Sealant as manufactured by Sika Corporation, or equal. Prepare substrate location for proper adhesion of Sikaflex+. See accessories below for backer.

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2.02 ACCESSORIES

A. Primer: Non staining type, recommended by sealant manufacturer to suit application.

3.03 INSTALLATION

A. Install sealant in accordance with manufacturer's instructions.

B. Caulk all exterior joints and openings in the building envelope that are observable sources of air infiltration.

C. Measure joint dimensions and size materials to achieve required width/depth ratios.

D. Install joint backing to achieve a neck dimension no greater than 1/3 the joint width. Roll the material into the joint to avoid lengthwise stretching. Do not twist or braid rod stock.

E. Install bond breaker where joint backing is not used.

B. Joint Cleaner: Non corrosive and non staining type, recommended by sealant manufacturer; compatible with joint forming materials.

C. Joint Backing: Non-staining; compatible with sealant and primer; such as round, closed cell polyethylene foam rod; oversized 30 to 50 percent larger than joint width. Materials impregnated with oil, bitumen or similar materials shall not be used. Sealant shall not adhere to back-up material.

D. Bond Breaker: Pressure sensitive tape recommended by sealant manufacturer to suit application.

E. Solvents; cleaning agents or other accessory materials shall be as recommended by the sealant manufacturer.

PART 3 � EXECUTION

3.01 EXAMINATION

A. Verify that surfaces and joint openings are ready to receive work and field measurements are as shown on Drawings and recommended by the manufacturer.

B. Beginning of installation means installer accepts existing surfaces.

3.02 PREPARATION

A. Clean and prime joints in accordance with manufacturer's instructions.

B. Remove loose materials and foreign matter which might impair adhesion of sealant.

C. Verify that joint backing and release tapes are compatible with sealant.

D. Perform preparation in accordance with sealant manufacturer's recommendations.

E. Protect elements surrounding the work of this Section from damage or disfiguration.

F. Clean concrete, masonry, unglazed surfaces of ceramic tile and similar porous surfaces, by brushing, grinding, blast cleaning, mechanical abrading, or acid washing to produce a clean, sound substrate. Remove loose particles remaining from cleaning operations by vacuuming or blowing out joints.

G. Clean metal, glass, glazed surfaces of ceramic tile and other non-porous surfaces by chemical cleaners or other means which are not harmful to substrates or leave residues capable of interfering with adhesion of joint sealants.

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F. Prime surfaces to receive joint sealant with primer recommended by sealant manufacturer.

G. Apply sealant within recommended application temperature ranges. Consult manufacturer when sealant cannot be applied within these temperature ranges. Apply masking tape where required to protect adjacent surfaces from sealant application.

H. Install sealant free of air pockets, foreign embedded matter, ridges, and sags.

I. Tool joints concave.

J. At exterior joints in concrete paving, joints larger than 3/8� in width shall be lightly sanded while sealant is still wet and tacky. Lightly broadcast sand evenly over sealant, allow sealant to cure completely then brush away excess sand.

3.04 CLEANING AND REPAIRING

A. Clean work under provisions of Division 1, General Requirements.

B. Clean adjacent soiled surfaces. Use a solvent or cleaning agent as recommended by the sealant manufacturer.

C. Repair or replace defaced or disfigured finishes caused by work of this Section.

3.05 PROTECTION OF FINISHED WORK

A. Protect finished installation under provisions of Division 1, General Requirements.

B. Protect sealants until cured.

C. Do not paint sealants until sealant is fully cured.

D. Do not paint silicone sealant.

[END OF SECTION 07 90 00]

SECTION 09 24 00 - CEMENT PLASTERING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Metal lath.

2. Cement plaster repair material.

3. Accessories

1.2 ACTION SUBMITTALS

A. Product Data:

09 24 00 - 1

CEMENT PLASTERING

1. Metal lath.

2. Cement plaster repair material.

3. Accessories

1.3 DELIVERY, STORAGE AND HANDLING

A. Store materials inside under cover, and keep them dry and protected against damage from weather, moisture, direct sunlight, surface contamination, corrosion, construction traffic, and other causes.

1.4 FIELD CONDITIONS

A. Comply with ASTM C926 requirements.

B. Exterior Plasterwork:

1. Apply and cure plaster repair to prevent plaster drying out during curing period. Use procedures required by climatic conditions, including moist curing, providing coverings, and providing barriers to deflect sunlight and wind.

2. Apply plaster repair when ambient temperature meets manufacturer's recommendation.

3. Protect plaster coats from freezing for not less than 48 hours after set of plaster repair has occurred.

09 24 00 - 2

PART 2 - PRODUCTS

2.1 SOURCE LIMITATIONS

A. Obtain plaster materials from single source from single manufacturer.

2.2 PERFORMANCE REQUIREMENTS

A. Fire-Resistance Ratings: Where indicated, provide cement plaster assemblies identical to those of assemblies tested for fire resistance in accordance with ASTM E119 by a qualified testing agency.

2.3 METAL LATH (as needed for repairs)

A. Expanded-Metal Lath: ASTM C847, cold-rolled carbon-steel sheet with ASTM A653/A653M, G60, hot-dip galvanized-zinc coating.

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

a. AMICO, a Gibraltar Industries company.

b. CEMCO; California Expanded Metal Products Co.

c. ClarkDietrich.

2. Diamond-Mesh Lath: Self-furring , 2.5 lb/sq. yd. .

2.4 CEMENT PLASTER REPAIR MATERIAL

A. General: Comply with ASTM C926 for applications indicated.

B.

Sikacryl® Ready-Mix Stucco Patch acrylic-based, textured stucco patch for repairing spalls/large cracks in stucco

Or approved equal

2.5 ACCESSORIES (as needed for repairs)

A. General: Comply with ASTM C1063, and coordinate depth of trim and accessories with dimensions and types of existing conditions.

B. Metal Accessories:

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

a. AMICO, a Gibraltar Industries company.

b. Brand X Metals, Inc.

c. CEMCO; California Expanded Metal Products Co.

d. ClarkDietrich.

2. Foundation Weep Screed: Fabricated from hot-dip galvanized-steel sheet, ASTM A653/A653M, G60 zinc coating.

09 24 00 - 3

3. Cornerite: Fabricated from metal lath with ASTM A653/A653M, G60, hot-dip galvanized-zinc coating.

4. External- (Outside-) Corner Reinforcement: Fabricated from metal lath with

ASTM A653/A653M, G60, hot-dip galvanized-zinc coating.

5. Cornerbeads: Fabricated from zinc-coated (galvanized) steel .

a. Smallnose cornerbead with expanded flanges; use unless otherwise indicated.

6. Casing Beads: Fabricated from zinc-coated (galvanized) steel ; square-edged style; with expanded flanges.

7. Control Joints: Fabricated from zinc-coated (galvanized) steel; one-piece-type, folded pair of unperforated screeds in M-shaped configuration; with perforated flanges and removable protective tape on plaster face of control joint.

8. Expansion Joints: Fabricated from zinc-coated (galvanized) steel; folded pair of unperforated screeds in M-shaped configuration; with expanded flanges.

9. Two-Piece Expansion Joints: Fabricated from zinc-coated (galvanized) steel ; formed to produce slip-joint and square-edged reveal that is adjustable from 1/4 to 5/8 inch wide;

with perforated flanges.

C. Plastic Accessories: Manufactured from high-impact PVC.

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. AMICO, a Gibraltar Industries company.

b. ClarkDietrich.

c. Plastic Components, Inc.

2.7 MISCELLANEOUS MATERIALS

A. Water for Mixing and Finishing Plaster: Potable and free of substances capable of affecting plaster set or of damaging plaster, lath, or accessories.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates and conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of the Work.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Protect adjacent work from soiling, spattering, moisture deterioration, and other harmful effects caused by plastering.

B. Prepare smooth, solid substrates for plaster in accordance with ASTM C926.

3.4 INSTALLATION OF METAL LATH

A. Metal…