Attachment 3 - Contract Specifications - ANF Roofing Project FY22.pdf

U.S. FOREST SERVICE

PACIFIC SOUTHWEST REGION, REGION 5

ANGELES NATIONAL FOREST

ANGELES NATIONAL FOREST ROOFING PROJECT FY22

PROJECT SPECIFICATIONS

April 2022

The requirements contained in these specifications are hereby made a part of this solicitation and any resultant contract

Contents

SECTION 01010

SECTION 01060

SECTION 01300

SECTION 01400

SECTION 01524

Appendix A

SECTION 01600

SECTION 01700

SECTION 01741

SECTION 02050

SECTION 06200

SECTION 06201

SECTION 07335

SECTION 07620

SECTION 07920

SECTION 01010

GENERAL REQUIREMENTS

PART 1 – SCOPE

This solicitation is for repairing existing roofing systems and removing existing roofing systems, disposing and recycling of the removed material, and installing new roofing systems.

PART 2 - LOCATION AND DESCRIPTION

Project Description: This project includes removing existing roofing materials, including shingles, built-up roofing system, roofing underlayment, drip edges, gutters and down spouts, flashing and where necessary decking material. At repair locations, the Contractor shall make necessary repairs to mitigate water leaks as needed. At replacement locations, the Contractor shall install new underlayment, flashing, drip edges, gutters and down spouts, shingles, modified bitumen, polymeric base shake, ridge venting and where necessary new decking material. All new roof installations shall include demolition and disposal of damaged material (to be replaced), repair work, joint sealants and new materials for a complete watertight roof system as shown on the sketches and as noted in the specifications. All protruding nails and screws shall be removed prior to installation of new roof.

With all roofing material removed, the Contractor shall assess the condition of the existing decking, rafters, joists and connections and report to the Contracting Officer’s Representative any deficiencies to the structural integrity of the roof. Payment for removal and replacement of decking will be made per square foot. Payment for removal and replacement of fascia shall be made per linear foot. Gutters and downspouts may require removal and replacement as to facilitate the roofing operation. Payment for removal and replacement of gutters and downspouts shall be made per linear foot. Where fascia and exposed decking are replaced, the material shall be painted with a primer and finish coat with a color to match existing prior to installation. The warranty period shall be a minimum of 10 years or as specified in the specifications by material.

Location: The projects will be located within multiple locations throughout the Angeles National Forest.

PART 3 - MAPS

Project Vicinity Map

PART 4 - RESTRICTIONS ON WORK

Vehicles shall not be used off of designated roads, parking lots, pathways, or existing disturbed areas around buildings and not on vegetated areas. All materials shall be stored on roads, parking lots, pathways, or existing disturbed areas around building, not on vegetated areas. All equipment brought onto a site shall be free of seed, dirt or other plant materials to prevent the movement of weeds between sites.

END OF SECTION

SECTION 01060

APPLICABLE CODES AND STANDARDS

PART 1 - GENERAL

1.01 SCOPE: This section describes the codes and standards which apply to the work in this contract. Additional codes and standard may be cited in sections to which they apply.

1.02 CODES AND STANDARDS

A. The following codes and standards shall apply to the work in this contract:

1. International Building Code (IBC), 2018 Edition

2. National Roofing Contractors Association. (NRCA)

3. Structural design as per Western Wood Products Association, Western Woods

Use Book Structural Data and Design Tables.

4. Lumber Grades as per the inspection agencies:

a. Western Wood Products Association (WWPA).

b. West Coast Lumber Inspection Bureau (WCLIB).

c. Redwood Inspection Service (RIS).

5. Plywood Grades as per the American Plywood Association (APA).

6. International Conference of Building Officials (ICBO).

7. Underwriter's Laboratories, (UL).

8. Occupational Safety and Health Administration (OSHA).

B. Unless otherwise specified in this contract, reference to a specific standard or specification shall mean the latest edition or amendment in affect on the date of the invitation to bid.

1.03 DEFINITIONS: Administrative Authority or Building Official, as used in the Codes and Standards, shall be the Contracting Officer.

SECTION 01300

SUBMITTALS

1.1 SCOPE

This work consists of submitting samples, technical information, and substitutions. The specification describes the review and approval process for submittals.

1.2 MEASUREMENT AND PAYMENT:

No separate measurement or payment will be made for the work specified in this section.

PART 2 PRODUCTS

Not Applicable.

PART 3 EXECUTION

3.1 SHOP DRAWINGS

A. Original Submittal The Contractor shall submit two copies of all shop drawings for review.

B. Review and Resubmittal The Government will review and return the shop drawings within 15 calendar days. The Contractor shall make corrections noted and resubmit one copy of corrected shop drawings. The Government will review and return resubmittals within 7 calendar days.

C. Final Submittal When all corrections have been made and approved, the Contractor shall submit two copies of the final shop drawings.

3.2 SAMPLES

A. Original Submittal The Contractor shall submit one sample of each item for which samples are required. The samples shall be representative of the actual material proposed for use in the project and of sufficient size to demonstrate design, color, and texture and finish as they will appear in the completed installation.

B. Review and Resubmittal

The Government will review samples within 15 calendar days. The Contractor shall resubmit new samples of unsatisfactory items in accordance with paragraph

3.1 B and C. The Government will review resubmittals within 7 calendar days.

C. Approval The Contractor shall not deliver any item to the project site until approval of the submittal for that item has been obtained. All samples will be returned to the Contractor at or before the final acceptance of the project.

3.3 CATALOG DATA

A. Original Submittal The Contractor shall submit two copies of catalog data.

B. Identification Clearly identify items submitted in each catalog or on each page. If the entire catalog is submitted, the items shall also be identified on the cover of the catalog by page and item number.

C. Review and Resubmittal Review and resubmittal of catalog data shall be in accordance with paragraphs 3.1 B and C.

3.4 SUBSTITUTION

Materials in the specifications may be followed by the words “or approved equal.” In these cases, wherever the name or brand of a manufacturer’s article is specified, it is used as a measure of quality and utility or a standard. If the Contractor prefers to use any other brand or manufacturer of same quality, appearance and utility to that specified, he shall request substitution as provided below, not less than 30 days before the planned installation of the item. The Contracting Officer will approve or disapprove the request for substitution and his decision shall be final. Unless substitutions are requested within the time stated above and as provided below, no deviation from the specifications will be allowed.

Requests for substitution will only be considered if contractor submits the following:

A. Complete technical data including drawings, complete performance specifications, test data, samples and performance tests of the article proposed for substitution.

Submit additional information if required by Contracting Officer. All items in the above information shall be circled, tagged, or marked in some way to indicate all deviations or differences which the proposed item differs from the originally specified item.

B. Similar data as above for item originally specified. All items shall be marked to identify where/how the proposed substitution will differ.

C. A statement by the Contractor that the proposed substitution is in full compliance with the contract documents, applicable codes, and laws.

D. A list of other trades which may be affected by the substitution.

E. The Contractor shall be responsible for any effect upon related work in the project for any substitution and shall pay any additional costs generated by any substitutions.

SECTION 01400

QUALITY CONTROL AND QUANTITY MEASUREMENT

1.01 SCOPE: This work shall consist of providing quality control in conformance with the inspection of construction provisions, of this contract to ensure compliance with the specifications and provision of the Contract. The Contractor shall provide all personnel, equipment, tests and reports necessary to meet the requirements of this specification.

1.02 COORDINATION: Where specifications, require the Contracting Officer to be present during the sampling or testing procedure to obtain approval, the Contractor shall be subject to the following conditions:

A. The Contractor shall provide 72 hours prior notice for an inspection requiring government observation for approval.

B. The Contractor shall provide 24 hours notice for cancellation.

PART 2 - EXECUTION

2.01 QUALITY CONTROL AND MEASUREMENT SYSTEMS:

A. The Contractor shall provide and maintain a quality control system that will ensure that all services, supplies and construction required under this contract conform to the contract requirements.

B. The Contractor shall also perform, or cause to be performed, all measurements of quantities of materials incorporated under the provisions of the contract.

SECTION 01524

CONSTRUCTION WASTE MANAGEMENT

PART 1 – GENERAL

1.1 SUMMARY

A. Section includes:

1. Special requirements for waste management during renovation construction operations.

a. Protect the environment, both on-site and off-site, during renovation and construction operations.

b. Prevent environmental pollution and damage.

c. Maximize source reduction, reuse and recycling of solid waste.

1.2 DEFINITIONS

A. Definitions pertaining to sustainable development: As defined in ASTM £2114.

1.3 QUALITY ASSURANCE

A. Maximize use of source reduction and recycling procedures outlined in ASTM

D5834.

B. Diversion Goals: A minimum 25 percent by weight of total project solid waste to be dive1ied from landfill.

1.4 PRECONSTRUCTION MEETING

A. After award of Contract and prior to the commencement of the Work, schedule and conduct meeting with the Contractor and the Contracting Officer to discuss the proposed Waste Management Plan and to develop mutual understanding relative to details of environmental protection.

1.5 SUBMITTALS

A. Solid Waste Management Plan: Not less than 10 days before the Pre-construction meeting, prepare and submit a Solid Waste Management Plan including, but not limited to, the following:

1. List of the recycling facilities, reuse facilities, municipal solid waste landfills and other disposal area(s) to be used. Include:

a. Name, location, and phone number.

b. Copy of permit or license for each facility.

2. Identify materials that cannot be recycled or reused. Provide explanation or justification.

3. Revise and resubmit Plan as required by The Contracting Officer.

a. Approval of Contractor's Plan will not relieve the Contractor of responsibility for compliance with applicable environmental regulations.

B. Progress Documentation: Document solid waste disposal and diversion. Include the quantity by weight of waste generated; waste diverted through sale, reuse, or recycling; and waste disposed by landfill or incineration. Identify landfills, recycling centers, waste processors, and other organizations that process or receive the solid waste.

1. Document on form in Appendix A of this Section, or similar form as approved by the Contracting Officer.

2. With each request for payment, submit updated documentation for solid waste disposal and diversion.

3. With each request for payment. Submit manifests, weight tickets, receipts, and invoices specifically identifying the project and waste material.

PART 2 - PRODUCTS

PART 3 - EXECUTION

3.1 SOLID WASTE MANAGEMENT

A. Develop and implement a waste management program in accordance with ASTM

E1609 and as specified herein.

B. Collection: Implement a recycling/reuse program that includes separate collection of waste materials of the following types as appropriate to the project waste and to the available recycling and reuse programs in the project area:

1. Land clearing debris.

2. Asphalt.

3. Concrete and Masonry.

4. Metal.

a. Ferrous.

b. Non-ferrous.

5. Wood, nails and staples allowed.

6. Debris.

7. Glass, colored glass allowed.

8. Paper.

a. Bond.

b. Newsprint.

c. Cardboard and paper packaging materials.

9. Plastic.

10. Gypsum.

11. Non-hazardous paint and paint cans.

12. Carpet.

13. Insulation.

14. Others as appropriate.

C. Recycling/Reuse: Maximize recycling and reuse of materials.

1. Recycling/Reuse on project site: Coordinate with The Contracting Officer.

2. Recycling/Reuse off project site: The following is a pat1ial list for

Contractor's information only. For more info1mation, contact the State Department of Environmental Quality and the local Integrated Solid Waste Management Office.

• Habitat for Humanity, a non-profit housing organization that rehabilitates and builds housing for low-income families. Sites requiring donated materials vary. Contact the national hotline (800)

HASITAT.

• California Materials Exchange (CAL-MAX) Program sponsored by the California Integrated Waste Management Board; (916) 255-2369.

D. Handling:

1. Clean materials that are contaminated prior to placing in collection containers.

Deliver materials in accordance with recycling or reuse facility requirements (e.g., free of di1i, adhesives, solvents, petroleum contamination, and other substances deleterious to recycling process).

2. Arrange for collection by or delivery to the appropriate recycling or reuse facility.

Appendix A

SUMMARY OF SOLID WASTE DISPOSAL AND DIVERSION

Project Name: Project Number:

Contractor Name: License Number:

Contractor Address:

Solid Waste Material

Date Material Disposed/Diverted

Amount Disposed/Diverted (ton or cubic yard)

Municipal Solid Waste

Facility (name, address, & phone number)

Recycling Reuse

Facility (name, address, & phone number)

Comments (if disposed, state why not diverted)

Appliances Asphalt Cardboard Concrete Gypsum Drywall Land Clearing/Soil

Masonry Metals: Ferrous Metals: Non- Ferrous

Mixed/ Co-mingled Waste

Plastic Roofing:

Asphalt-based

Salvaged/Surplus Materials for Reuse

Wood: Land clearing Debris

Wood: Scrap Lumber

Other Signature: Date:

SECTION 01600

USE OF GOVERNMENT FACILITIES

1.1 SCOPE: This work consists of the use, by the Contractor, of areas and facilities owned by the Government during the construction of this project.

PART 2 - STORAGE FACILITIES

2.1 Upon written request by the Contractor, existing fenced areas for equipment, materials storage or other needs may be designated and defined on the ground. Any areas so designated may be additionally fenced by the Contractor.

2.2 The Contractor shall return the area designated for equipment and materials storage to its original condition at the completion of the project.

PART 3 - UTILITIES

3.1 There are no electrical, water or sanitary utilities available at some of the sites for contractor use. The Government will make available to the Contractor, at no expense, limited use of the existing electrical, water and sanitary at some of the sites. Contractor's use of these utilities shall not be so high or damaging as to limit utilities for Government administrative use at the site. The Government does not ensure the adequacy of these utilities. Any delay in the Contractor's operation resulting from the interruption of these utilities, for any reason, shall not result in an expense to the Government. The Contractor is responsible for investigating site utilities, if listed as available, for use compatibility.

Any extension of the utilities to the project shall be provided by the Contractor from locations approved by the Contracting Officer.

3.2 Contractor shall provide their own telephone services.

PART 4 - EXECUTION

4.1 Most of the sites are accessible by paved roads. Existing road and parking areas shall be kept open to all traffic and maintained by the Contractor in such condition that traffic will be adequately accommodated. The Contractor's operations shall at no time interfere with emergency vehicle traffic.

4.2 The Contractor shall return the area designated for equipment and materials storage to the original state at the completion of the project.

SECTION 01700

PROJECT CLEANUP

1.1 SCOPE: This work consists of the cleanup required during construction and the final cleanup at each jobsite. The Contractor shall, at all times during the progress of the work, keep the building and work site clear of all rubbish, material scraps, and construction debris.

2.1 All cleaning materials and equipment used shall be selected and employed with care to avoid scratching, marring, defacing, staining or discoloring the surfaces cleaned.

3.1 CLEANUP DURING CONSTRUCTION

A. Cleanup shall be performed by the Contractor on a daily basis, to prevent accidents to

Contractor, Government, and private/public personnel and to protect all work in-place. Construction cleanup shall consist of the removal of all dirt, trash, scrap, debris, and excess materials from any floor space or walking surface that may cause the tripping or sliding of workers, ladders, or equipment.

B. Immediately prior to the Contractor's move to the next jobsite, final cleanup shall be performed.

C. All debris and unused material shall be removed from the site. All debris shall be disposed of off National Forest land in accordance with local regulations. Site shall be restored to as near its original condition as possible.

D. Burning of material is not allowed.

3.2 QUALITY OF CLEANUP: In addition to the normal "broom clean" requirements, the exposed surfaces of the following materials shall be cleaned as listed below:

A. Painted Surfaces: Remove marks, stains, fingerprints and dirt.

B. Roof. Remove dirt and debris.

C. Hardware: Clean.

SECTION 01741

MANUFACTURER'S WARRANTIES

PART 1 GENERAL

1.1 SCOPE: This work consists of the assignment of manufacturer's warranties for products incorporated into the work.

1.2 MEASUREMENT AND PAYMENTL: No separate measurement or payment will be made for the work specified in this section.

PART 2 PRODUCTS

A. All roofing systems.

B. All gutters and downspouts.

PART 3 EXECUTION

3.1 MANUFACTURER'S WARRANTIES

All manufacturer's warranties shall be executed in the name as follows:

Angeles National Forest 701 N. Santa Anita Ave.

Arcadia, CA 91006

The contractor shall file the original copy of each manufacturer's warranty in a loose leaf binder.

The binder shall be given to the Contracting Officer at, or prior to the Final Inspection.

SECTION 02050

DEMOLITION

PART I-GENERAL

1.1 SCOPE: The work consists of the demolition necessary and required for re-roofing. The work includes, but is not limited to, the following items:

A. Removal of existing roofing material, including underlayment.

B. Removal of fascia, all nailing devices and roof substrate decking, as required, prior to installing new roofing material. All fascia will be replaced with new members.

C. Removal of flashing and drip edge.

D. Removal of damaged soffit material.

E. Removal of gutters and downspouts when necessary.

PART 2 - PRODUCTS (Not Applicable)

PART 3-EXECUTION

3.1 Prior to starting demolition work, the Contractor shall make an inspection with the Contracting Officer to determine the physical condition of adjacent improvements scheduled to remain. The Contractor shall exercise caution to minimize disturbance to existing improvements.

3.2 Demolition work shall be performed in such a manner as to ensure the safety of persons working or visiting the area.

3.3 Debris resulting from the demolition portion of this project shall be removed from the jobsite as it accumulates in accordance with Section 01700, Project Cleanup. Keep all pavement areas adjacent to and leading from the site, clean and free of debris at all times.

3.4 Some buildings potentially have been painted with lead based paint. The Maintenance and Reconstruction Logs display which buildings were constructed after 1978 where it is expected that lead based paint will not be present. The Logs also display which buildings have been abated for lead based paint. On remaining buildings removed material from fascia, soffits, and the like may be disposed of as construction waste so long as there is no loose or flaking paint. Where there is loose or flaking paint, the contractor shall have workers certified for handling lead base paint remove samples of the paint for testing.

The paint shall be tested by an approved testing authority. If lead is not present, the contractor shall dispose of the material as a non-hazardous waste.

If the presence of lead is confirmed, the contractor shall immediately notify the Contracting Officer so that an equitable adjustment may be negotiated to cover the Contractor's additional unanticipated cost. When the contract modification is signed by the Contracting Officer, the paint shall be removed from structures by stripping, wet sanding, or wet scraping following EPA, HUD and OSHA regulations and guidance. The contractor shall contain all debris and chips during work and remove from the work site daily. The contractor will collect and dispose of the lead paint waste generated during the course of the contract at an EPA approved treatment, storage, disposal facility (TSDF) and in accordance with all federal, state, and local environmental regulations. The contractor will utilize the Uniformed Hazardous Waste Manifest and Land Disposal Restrictions Form for all shipments of waste generated at each site. Prior to shipping these wastes from the site, contractor will coordinate the Uniformed Hazardous Waste Manifest with the COR for generator's signature. A copy of the completed manifest indicating receipt by the disposal facility must be received by the COR within 35 days of the shipment date. The contractor shall follow all OSHA guidance on personnel protection measures and equipment.

1. The contractor shall notify building occupants and post signs conveying the hazards of work and debris one week prior to start of work.

2. All State of California regulations for permitting of lead paint removal shall be met by the contractor.

SECTION 06200

FINISH CARPENTRY

1.1 SCOPE

A. This Section includes the following:

1. Exterior standing and running trim, posts, exposed built-up roof trusses, miscellaneous framing members, brackets and rafters.

2. Interior standing and running trim.

3. Fascia lumber.

B. Related Sections: The following Sections contain requirements that relate to this

Section:

1. Division 6 Section "Rough Carpentry" for furring, blocking, and other carpentry work.

2. Division 7 Section "Flashing and Sheet Metal" for flashing and other sheet metal work.

3. Division 7 Section "Joint Sealants" for sealants.

1.2 DELIVERY, STORAGE, AND HANDLING

A. Delivery and Storage: Keep materials under cover and dry. Protect against exposure to weather and contact with damp or wet surfaces. Stack lumber as well as plywood and other panels. Provide for air circulation within and around stacks and under temporary coverings including polyethylene and similar materials.

1.3 PROJECT CONDITIONS

A. Environmental Conditions: Obtain and comply with finish carpentry manufacturer's and installer's coordinated advice for optimum temperature and humidity conditions for finish carpentry during its storage and installation.

B. Weather Conditions: Proceed with finish carpentry only when existing and forecasted weather conditions will permit exterior finish carpentry to be installed in compliance with manufacturer's recommendations and when substrate is completely dry.

2.1 MATERIALS, GENERAL

A. Softwood Lumber Standards: Comply with PS 20 "American Softwood Lumber

Standard" for lumber and with applicable grading rules of inspection agencies certified by American Lumber Standards Committee Board of Review.

B. Hardwood Lumber Standards: Comply with National Hardwood Lumber Association (NHLA) rules.

C. Plywood Standards: Comply with PS 1 "U.S. Product Standard for Construction and Industrial Plywood" for plywood and, for products not manufactured under PS 1, with

APA PRP-108.

D. Inspection Agencies: Inspection agencies and the abbreviations used to reference them with lumber grades and species include the following:

1. WCLIB - West Coast Lumber Inspection Bureau.

2. WWPA - Western Wood Products Association.

E. Grade Stamps: Provide lumber with each piece factory-marked with grade stamp of inspection agency evidencing compliance with grading rule requirements and identifying grading agency, grade, species, moisture content at time of surfacing, and mill.

1. For exposed lumber furnish pieces with grade stamps applied to ends or back of each piece, or omit grade stamps entirely and provide certificates of grade compliance issued by inspection agency.

2.2 EXTERIOR FINISH CARPENTRY

A. Exposed wood features: For built-up trusses, roof brackets, fascia and associated trim provide lumber complying with the following requirements.

1. Species: Western Red Cedar.

a. Grade: "A" Clear.

2. Texture: Surfaced 4 sides (smooth).

B. For exterior soffits:

1. Species: Exterior T&G cedar plywood (match roof sheathing thickness)

2. Texture: Plain rough sawn.

C. For posts and beams

3. Species: Douglas Fir

4. Texture: Surfaced 4 sides (smooth).

2.3 INTERIOR FINISH CARPENTRY

A. Standing and Running Trim: For trim in form of boards and worked products, provide lumber complying with the following requirements.

1. Species: Western Red Cedar; WWPA or

2. Species: Douglas Fir; WWPA.

3. Select Grade: B and Better.

4. Finish Grade: Prime.

5. Texture: Surfaced (smooth).

6. Lumber for Transparent Finish (Stained or Clear): Solid lumber stock.

7. Lumber for Painted Finish: Glued-up lumber or solid lumber stock.

2.4 INTERIOR FINISH PLYWOOD

A. Plywood Paneling: APA sanded 3/4" A-C. Exposure Classification: Exterior.

2.5 MISCELLANEOUS MATERIALS

A. Fasteners for Exterior Finish Carpentry: Stainless steel, noncorrosive aluminum or hot-dip galvanized nails, in sufficient length to penetrate minimum of 1-1/2 inches into substrate unless recommended otherwise by manufacturer.

1. Provide prefinished nails for face nailing of material to receive stain in color to match where face nailing is unavoidable.

2. Countersink nails and fill surface where face nailing is unavoidable.

B. Fasteners for Interior Finish Carpentry: Nails, screws, and other anchoring devices of type, size, material, and finish required for application indicated to provide secure attachment, concealed where possible.

1. Countersink nails, fill surface flush, and sand where face nailing is unavoidable.

2. Where finish carpentry materials are exposed in areas of high humidity, provide fasteners and anchorages with hot-dip galvanized coating complying with ASTM A 153.

C. Adhesives: Comply with manufacturer's recommendations for adhesives.

2.6 FABRICATION

A. Wood Moisture Content: Comply with requirements of specified inspection agencies and manufacturer's recommendations for moisture content of finish carpentry in relation to relative humidity conditions existing during time of fabrication and in installation areas. Provide finish carpentry with moisture content that is compatible with Project requirements.

B. Fabricate finish carpentry to dimensions, profiles and details indicated.

3.1 EXAMINATION

A. Examine substrates for compliance with requirements for installation tolerances and other conditions affecting installation and performance of finish carpentry. Do not proceed with installation until unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Clean substrates of projections and substances detrimental to application.

B. Condition finish carpentry to average prevailing humidity conditions in installation areas before installation for a minimum of 24 hours unless longer conditioning recommended by manufacturer.

3.3 INSTALLATION, GENERAL

A. Do not use finish carpentry materials that are unsound, warped, bowed, twisted, improperly treated or finished, not adequately seasoned, or too small to fabricate with proper jointing arrangements.

1. Do not use manufactured units with defective surfaces, sizes, or patterns.

B. Install finish carpentry plumb, level, true, and aligned with adjacent materials. Use concealed shims where required for alignment.

1. Scribe and cut finish carpentry to fit adjoining work. Refinish and seal cuts as recommended by manufacturer.

2. Install to tolerance of 1/8 inch in 8 feet for plumb and level. Install adjoining finish carpentry with 1/16 inch maximum offset for flush installation and 1/8 inch maximum offset for reveal installation.

3. Coordinate finish carpentry with materials and systems that may be in or adjacent to standing and running trim and rails. Provide cutouts for mechanical and electrical items that penetrate exposed surfaces of trim and rails.

C. Finish in accordance with specified requirements.

D. Refer to individual specifications for final finishing of finish carpentry.

E. Anchor finish carpentry work to anchorage devices or blocking built-in or directly attached to substrates. Secure to grounds, stripping and blocking with countersunk, concealed fasteners and blind nailing as required for a complete installation. Except where prefinished matching fastener heads are required, use fine finishing nail for exposed nailing, countersunk and filled flush with finished surface, and matching final finish where transparent is indicated.

3.4 STANDING AND RUNNING TRIM AND RAILS

A. Install with minimum number of joints practical, using full-length pieces from maximum lengths of lumber available. Stagger joints in adjacent and related standing and running trim and rails. Cope at returns and miter at comers to produce tight-fitting joints with full-surface contact throughout length of joint. Use scarf joints for end-to-end joints. Plane back of casings to provide uniform thickness across joints if required.

1. Drill pilot holes in hardwood prior to nailing or fastening to prevent splitting.

Fasten to prevent movement or warping. Countersink nail heads on exposed carpentry work and fill holes.

2. Fit exterior joints to exclude water.

3.5 ADJUSTING

A. Repair damaged or defective finish carpentry where possible to eliminate functional or visual defects. Where not possible to repair, replace finish carpentry. Adjust joinery for uniform appearance.

3.6 CLEANING

A. Clean finish carpentry on exposed and semi exposed surfaces. Touch up factory-applied finishes to restore damaged or soiled areas.

3.7 PROTECTION

B. Provide final protection and maintain conditions that ensure finish carpentry is without damage or deterioration at time of Substantial Completion.

SECTION 06201

CARPENTRY

1.1 SCOPE: Perform all work necessary or required for re-roofing. Such work includes, but is not necessarily limited to, repair or replacement of roof substrate decking areas, soffits, porch members, and fascia as may be needed to accomplish project requirements.

1.2 PRODUCT HANDLING: Stack all lumber to insure proper ventilation. Cover all lumber, millwork, and other materials to protect from moisture. Stack lumber as well as plywood and other panels. Provide for air circulation within and around stacks and under temporary coverings including polyethylene and similar materials. Do not store or install any millwork in any part of the building until concrete or similar work is dry.

1.3 GRADE MARKS: All lumber and structural panels shall be grade stamped.

1.4 MEASUREMENT AND PAYMENT: - No separate payment will be made for work included under this section unless noted otherwise in other sections of the specifications.

Payment for this work will be included in the contract unit price for the roof.

2.1 MATERIALS: All lumber shall be seasoned, surfaced four sides (S4S), except where shown as rough-sawn on the Maintenance/Reconstruction log, shall not exceed a moisture content of 19 percent for (A), (B), and (C) below and 15 percent for all others, and shall not be less than the following grades:

A. Joists and Planks, Beams and Stringers, Posts and Timbers: Douglas Fir No. 2 and better grade, as graded by the Western Wood Products Association or West Coast Lumber Inspection Bureau, or equal.

B. Light Framing: Douglas Fir, Standard and better grade, as graded by Western Wood Products Association or West Coast Lumber Inspection Bureau, or equal.

C. Roof Sheathing: Comply with PS 1 "U.S. Product Standard for Construction and Industrial Plywood" for plywood and for products not manufactured under PS 1, with APA PR-108. Use of the term "plywood" on the drawings does not exclude the use of other panels with equivalent span ratings.

3.1 Nailing: Nailing shall conform with the requirements of the International Building Code, unless otherwise specified.

3.2 ROUGHCARPENTRY

A. All framing shall be accurately cut and constructed plumb, straight, and true to lines and dimensions shown. No cutting and boring of joists and beams shall be done without permission from the Contracting Officer. Set joists and beams with crown edges up. Space studs 16" O.C., unless shown otherwise. Install double studs at openings and triple studs at intersections of walls.

B. Roof Substrate Decking: Decking shall be installed perpendicular to the rafters, end joints staggered, and nailed at each crossing and end. Butted end joints shall occur only over bearing points.

C. Eaves, Fascia and Soffits: Eaves, soffits and fascia shall be installed to conform with industry standards and shall match the existing including one coat of primer and 2 coats of paint with color to match existing. Primer shall be Benjamin Moore Fresh Start All Purpose Alkyd Primer (N024/C024); paint shall be Benjamin Moore Moorgard Exterior Low-Lustre Paint (N103), or approved equal. In the event a concurrent project has resulted in exterior painting of the same building, the exact product used in the concurrent project shall be used for painting in this project.

SECTION 07333

BUILT-UP BITUMINOUS ROOFING

PART 1 GENERAL

1.01 SCOPE: This work consists of reroofing designated buildings with built-up bituminous gravel surfaced roofs. The finish product shall provide the equivalent of a 30 year bonded roof. The roof(s) shall meet Underwriter’s Laboratory’s, Class “A”.

The work includes sweep and spud all loose gravel from existing built-up roofs providing a smooth surface for new built-up roofing system; install a new built-up roofing system including metal flashing; replacement of metal gravel stops and flashing as necessary; and disposal of any waste materials.

1.02 SUBMITTALS: Catalog data on materials specified in this section shall be submitted to the Contracting Officer for approval.

1.03 MEASUREMENT AND PAYMENT

A. Measurement for work performed under this section will be the one job, as shown in the SCHEDULE of ITEMS.

B. Payment for wrk performed under this section will be made on a LUMP SUM BASIS at the CONTRACT UNIT PRICE designated in the SCHEDULE OF ITEMS as follows:

ITEM NO. Description Unit

07333(01) Re-roof Building No. ??? Job

PART 2 PRODUCTS

2.01 ASPHALT BITUMEN: ASTM D312, Trumbull asphalt or equal. Roof Incline Limitation is as follows:

A. Up to ½ inch per foot, 170ºF, Type III

B. ½ inch to 3 inches per foot, 190ºF, Type IV

C. Asphalt Primer: ASTM D41, Damp-proofing and Waterproofing.

D. Plastic Cement: ASTM D4586, cutback asphalt type, asbestos free. Type II: Industrial Roof Cement.

2.02 ROOFING FELTS: ASTM D2178 Type VI. Fiberglass base felts and fiberglass finishing felts shall be as supplied by GAF Building Materials, Corp., Johns Manville, or equal.

2.03 CANT STRIPS AND CRICKETS: ASTM C728. Cant strips and crickets shall be fabricated from wood or perlite board as manufactured by GAF Building Materials, Corp., Johns Manville, or equal unless otherwise noted on the drawings.

2.04 FLASHING FABRICS: Flashing fabrics shall be fiberglass felt waterproofing fabrics manufactured by GAF Building Materials, Corp., Johns Manville, or equal.

2.05 Insulation: ASTM C-1289. Rigid insulation shall be a closed cell polyisocyanurate foam core bonded in the foaming process to ½ inch high density, mineral aggregate insulation board on one side and a fiberglass reinforced facer on the other with R value minimum 10 per two inches of thickness, as manufactured by GAF Building Materials, Corp., Johns Manville, or equal.

2.06 VENTS: 6 inches high, deck flange 10 inches in diameter, with on-way valve, UV resistant, one per each 10 squares.

2.07 FASTENERS: Mechanical fasteners for insulation as recommended by the manufacturer.

2.08 VENT FLASHING: Vent flashing shall be flashing assembly complete with 4 pounds seamless lead flashing with 8 inch skirt, or equal.

2.09 AGGREGATE: ASTM D1863 Sound, hard, dry and clean.

PART 3 EXECUTION

3.01 ENVIRONMENTAL REQUIREMENTS: Do not apply roofing membrane during inclement weather. Do not apply roofing membrane to damp deck surface. The Contractor is responsible for checking weather conditions to determine that no inclement weather is predicted during the installation of the roof.

3.02 PREPARATION OF SURFACES: Remove existing roofing and insulation for all existing buildings and dispose of offsite. Repair all damaged deck. Verify that all units are properly secured in place. New insulation shall be installed for all existing and proposed buildings and shall be smooth, dry, and free of dirt and foreign materials, and shall be inspected and approved by the Engineer and the representative of the roofing materials manufacturer before roofing work is commenced. Deck shall have projections, equipment, curbs or supports removed, and depressions and holes shall be properly filled before roof is installed.

3.03 MEMBRANE APPLICATION: Summary of Materials per 100 square feet:

Concrete Deck Wood Deck Steel Deck

Ventply 1 ply 79 pounds

Baseply 1 ply 28 pounds

Glass Plies 4 plies 32 pounds 32 pounds 32 pounds

Asphalt 4 moppings at 23 pounds

92 pounds 92 pounds 92 Pounds

Asphalt 1 mopping at 60 pounds

60 pounds 60 pounds 60 pounds

Gravel or Slag 500 pounds 500 pounds 500 pounds

Approximate Total Weight

763 pounds 712 pounds 684 pounds

A. VENTPLY OR BASEPLY: Apply one 18 inch width Ventply or Baseply at low edge of perimeter. Apply following plies in full widths, lapping each ply 2 inches. Install fasteners at perimeters, corners, and in the field, using the minimum number of fasteners per square as required by FM approval guide for I-90 wind classification.

B. FIRST ASPHALT PLIES: Using glass plies, apply a 9 inch wide piece, then over that, an 18 inch wide piece, then over that, a 27 inch wide piece. Over these three partial sheets, install a full width 36 inch piece. The following felts are to be applied full width, overlapping the preceding felts by 27½ inches so that a least four plies of felt cover the substrate at all locations.

Set each ply firmly and uniformly, without voids, into hot asphalt (within ±25ºF of the EVT) applied just before the felt at a normal rate of 23 pounds per square. Installation over roof insulation may require up to 33 pounds of hot asphalt per square.

C. AGGREGATE: Set aggregate into hot asphalt mopped on at a nominal rate of 60 pounds per square. Aggregate must be installed so that there is complete coverage across the entire surface and at least 50% of the aggregate is solidly adhered in the hot asphalt. Do not apply the aggregate when the wind chill factor is less than 60ºF. Provide accurate, clearly visible thermometers at kettles and at a shaded job site location.

D. CONFORMANCE WITH APPLICABLE CODES AND INSTRUCTIONS: Apply in conformance with applicable portions of the IBC Chapter 15, NRCA Roofing and Waterproofing Manual, and in conformance with roofing manufacturer’s printed application specifications for indicated conditions. However, where specifications of the section exceed the IBC and manufacturer’s requirements, the specifications herein shall apply.

E. CLEANING: Remove bituminous markings from finished surfaces. In areas where finished surfaces are soiled by asphalt or other source of soiling caused by the work of this section, consult manufacturer of surfaces for cleaning advice and conform to their documented instructions. Repair of replaced defaced or disfigured finishes caused by work of this section.

F. FLASHINGS AND ACCESSORIES: Apply granular surfaced, flexible base flashings to seal membrane to bertical elements. Utilize Schuller Base Flashing Specification DFE Series.

Prime sheet metal items contacting Glass Plies with approved primer. Allow to dry before application of roofing. Install prefabricated vents, roofing control joints or expansion joints in accordance with manufacturer’s instructions. Roof penetations requiring flashing or pitch pans:

1. Flange shall be minimum 2½ pounds lead.

2. Set Flange over roofing system in bed of industrial roofing cement or hot asphalt.

3. Apply two-course layer of ply felt.

Coordinate installation of related metal flashing, skylights or roof drain.

G. WATER CUT-OFFS: Always install water cut-offs at the end of each day’s work to prevent moisture infiltration into the completed work area. Water cut-offs should be completely removed prior to resuming work.

3.04 TESTING: Cut samples 6 inches x 42 inches at right angles to plies, in areas indicated by the Engineer for each 2000 square feed of roof area, or part thereof. A minimum of one cut shall be taken per building. Test cuts shall be taken before application of visually inspected on the job site by the inspector and then removed for delivery to a testing laboratory. If test cuts do not meet manufacturer’s specifications, the entire roof shall be removed and replaced at Contractor’s expense.

Coat the area from which the test cut has been taken evenly, bottom and sides with plastic roof cement. Cut roofing plies to fit and set in alternate plies and plastic cement to fill the cut-out flush with the surrounding roofing.

Apply the same numbe fo plies and types of roofing materials as used in the roofing specification over the repaired cut-out area. Extend first ply 4 inches beyond the cut-out on all sides. Extend each succeeding ply 4 inches beyond the underlying ply, except that the final ply shall be full width of the roll, centered over the samples. Each ply shall be mopped solidly to the underlying plies.

SECTION 07335

COMPOSITION SHINGLES

1.1 SCOPE: Remove all existing shingles and underlayment, flashing, roof jacks, drip edges, gutters, downspouts, and fascia. Reuse gutters and downspouts. Replace removed associated items to match existing, and furnish and install composition shingles as specified herein. Perform all other work necessary for a complete roof replacement.

1.2 SUBMITTALS: Samples for verification purposes shall be in the form of two full-size units. Contractor shall submit manufacturer's installation instructions. Colors will be selected by the Government for each specific site.

1.3 QUALITY ASSURANCE: Provide products that are identical to those tested for the specified fire performance characteristics. Testing shall be by Universal Laboratories or other nationally accepted testing and inspecting organization. Identify products with appropriate markings of applicable testing and inspecting organization. Fire Resistance Ratings shall be as indicated by reference to design designations in UL "Fire Resistance Directory."

1.4 DELIVERY, STORAGE, AND HANDLING

A. Deliver materials to Project site in manufacturer's unopened bundles or containers with labels intact.

B. Handle and store materials at Project site to prevent water damage, staining, or other physical damage. Store roll goods on end. Comply with manufacturer's recommendations for job site storage, handling, and protection.

1.5 PROJECT CONDITIONS

A. All layers of existing roofing material shall be removed. Care shall be taken not to damage existing decking. Remove underlayment, flashing, drip edges, fascia, gutters, and downspouts. Care shall be taken in removing gutters and downspouts, which will be reused unless otherwise listed in the Maintenance and Reconstruction Log.

B. Roof Substrate Decking Material: Before applying new roofing materials, the existing roof decking shall be examined for the presence of damage. If rotting, delaminating, or other serious deficiencies are present, work on the roof shall cease and the COR shall be notified to determine the appropriate repair and method of resolution. All substrate surface shall be swept clear of all loose debris prior to applying new roofing materials.

C. Weather Conditions: Proceed with work only when existing and forecasted weather conditions will permit work to be installed in compliance with manufacturer's recommendations and when substrate decking material is completely dry.

PART 2 – PRODUCT

2.1 COMPOSITION SHINGLES: Shingle manufacturer shall be Certainteed Presidential

Shake or approved equal. Substitutions of an equal product will require consultation with Heritage Resource personnel to insure substituted product satisfies requirements of the "Secretary of Interior's Standards for Rehabilitation".

2.2 UNDERLA YMENT: Underlayment shall be #30 asphalt saturated felt.

2.3 FASTENERS: Fasteners shall be galvanized, large head, roofing nails of sufficient length and holding power (20 pounds minimum) to properly secure the shingles.

2.4 ASPHALT PLASTIC CEMENT: Non-asbestos asphalt cement complying with ASTM D 4586, designed for trowel application.

3.1 SURFACE PREPARATION: All surfaces shall be cured, dried, and properly supported for shingle nailing and application.

3.2 APPLICATION.

A. Application shall be in accordance with the manufacturer's instructions.

SECTION 07620

FLASHING AND SHEET METAL

1.1 SCOPE: This work consists of furnishing and installing all flashing and sheet metal to replace all edge and roof-penetration flashing sheet metal and accessories to provide a complete roof as specified herein and as shown on the drawings.

1.2 SUBMITTALS: Submit shop drawings of sheet metals flashings and trims and color chart for selection.

2.1 SHEET METAL FLASHING AND TRIM MATERIALS: Zinc-Coated Sheet Steel shall be 0.0359-inch thick (20 gage) except as otherwise indicated, commercial quality with

0.20 percent copper conforming to ASTM A 526 and ASTM A 527 for lock-forming.

The sheet metal shall be hot-dip galvanized in accordance with 090 and mill phosphatized where indicated for painting;

2.2 MISCELLANEOUS MATERIALS AND ACCESSORIES:

A. Solder: For use with steel or copper, provide 50 - 50 tin/lead solder (ASTM B 32), with rosin flux.

B. Fasteners: Same metal as flashing/sheet metal or other non-corrosive metal as recommended by sheet manufacturer. Match finish of exposed heads with material being fastened.

C. Elastomeric Sealant: Generic type recommended by manufacturer of metal and fabricator of components being sealed and complying with requirements for joint sealants as specified in Division 7 Section "Joint Sealers."

D. Adhesives: Type recommended by flashing sheet manufacturer for waterproof/weather-resistant seaming and adhesive application of flashing sheet.

E. Paper Slip Sheet: 5-lb. rosin-sized building paper.

F. Metal Accessories: Provide sheet metal clips, straps, anchoring devices, and similar accessory units as required for installation of work, matching or compatible with material being installed, noncorrosive, size and gage required for performance.

G. Elastic Flashing Filler: Closed-cell polyethylene or other soft closed-cell material recommended by elastic flashing manufacturer as filler under flashing loops to ensure movement with minimum stress on flashing sheet.

PART 3- EXECUTION

3.1 INSTALLATION REQUIREMENTS

A. General: Except as otherwise indicated, comply with manufacturer's installation instructions and recommendations and with SMACNA "Architectural Sheet Metal Manual." Anchor units of work securely in place by methods indicated, providing for thermal expansion of metal units; conceal fasteners where possible, and set units true to line and level as indicated. Install work with laps, joints, and seams that will be permanently watertight and weatherproof.

B. Bed flanges of work in a thick coat of bituminous roofing cement where required for waterproof performance.

3.2 CLEANING AND PROTECTION: Clean exposed metal surfaces, removing substances that might cause corrosion of metal or deterioration of finishes.

SECTION 07920

JOINT SEALANTS

1.1 SUMMARY: This Section includes joint sealants for flashing and sheet metal for re-roofing.

1.2 PERFORMANCE REQUIREMENTS: Provide elastomeric joint sealants that establish and maintain watertight and airtight continuous joint seals without staining or deteriorating joint substrates.

1.3 SUBMITTALS: Submit copies of product data and all manufacturers' instructions for the particular materials to be used for approval prior to installation.

1.4 PROJECT CONDITIONS: Do not proceed with installation of joint sealants under the following conditions:

A. When ambient and substrate temperature conditions are outside limits permitted by joint- sealant manufacturer.

B. When joint substrates are wet.

C. Where joint widths are less than those allowed by joint-sealant manufacturer for applications indicated.

D. Contaminants capable of interfering with adhesion have not yet been removed from joint substrates.

2.1 ELASTOMERIC JOINT SEALANTS: Elastomeric joint sealants shall comply with

ASTM C 920 and other requirements indicated for each liquid-applied chemically curing sealant specified, including those referencing ASTM C 920 classifications for type, grade, class, and uses related to exposure and joint substrates.

3.1 EXAMINATION:

A. Examine joints indicated to receive joint sealants for compliance with requirements for joint configuration, installation tolerances, and other conditions affecting joint-sealant performance.

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

3.2 PREPARATION: Clean out joints immediately before installing joint sealants to comply with joint-sealant manufacturer's written instructions and remove all foreign material from joint substrates that could interfere with adhesion of…