2)_Project_Specifications.pdf

Ti Bar and Smith River NRA Roofing AG-9AC7-S-16-0110 Six Rivers National Forest

SECTION 01010

SUMMARY OF WORK

PART 1 - GENERAL

1.01 WORK COVERED BY CONTRACT DOCUMENTS

A. Description:

1. The work consists of furnishing all labor, supervision, equipment, transportation and materials for the replacement of roofing and gutters on three forest-owned buildings at the Smith River NRA and one forest-owned buildings at Ti Bar Guard Station.

2. The Contractor should carefully review all sections of the Specifications in order to completely understand the work and all constraints including schedule, and material requirements.

3. The Contractor is encouraged to proceed in an orderly and expeditious manner according to a construction schedule developed by the Contractor and mutually agreed upon with the Forest Service prior to the commencement of the work. All work is to be constructed in strict accordance with the plans and specifications and subject to the terms and conditions of the contract.

B. Contractor's duties:

1. Except as specifically noted, provide and pay for:

a. Labor, materials and equipment.

b. Tools, construction equipment and machinery.

c. Portable toilet facilities, phone and utilities required for construction.

d. All other facilities and services necessary for proper execution and completion of work.

2. Pay legally required sales, consumer and use taxes.

3. Give required notices.

4. Comply with codes, ordinances, rules, regulations, orders and other legal requirements of public authorities which bear on performance of the work.

5. Promptly submit written notice to Contracting Officer of observed variance of contract documents from legal requirements.

6. If any subcontractor or person employed by the Contractor shall appear to the

Contracting Officer to be incompetent or to act in a disorderly or improper manner, he shall be discharged immediately on the requisition of the Contracting Officer, and such person shall not again be employed on the work.

7. It is the Contractor's responsibility to obtain all necessary permits and comply with same.

1.02 CONTRACTS

A. All work is contained in this contract. The limits of work are shown in the Plans and described in these Specifications. It will be the Contractor's responsibility to coordinate their activities to resolve conflicts.

1.03 WORK SEQUENCE

A. The first order of business is submission of submittals. See Section 01300 for information on timing of Submittals.

1.04 CONTRACT TIME

A. Contract time is 60 calendar days with an estimated start work date of August 1, 2016.

1.05 SITE VISIT

A. There will be no pre-bid site tour however it is strongly advised that the Contractor thoroughly investigate the site to determine the full extent of the work and the quantities of materials needed. To make an appointment for a site visit contact Diane Bales-Croft on the Six Rivers National Forest. Diane can be reached at (707) 457-3873.

1.06 CONTRACTOR USE OF PREMISES

A. Construction storage areas for materials and equipment shall be approved by the Contracting Officer.

B. Confine operations at site to the construction areas specified under this contract.

C. The Contractor shall coordinate the work to minimize disturbance to Forest

Service personnel living and working at Forest Service Compounds. The Contractor shall schedule their work between 0800 and 1630, Monday through Friday. The Contractor may not work during weekends or federal holidays.

D. Water and electrical power is available at the project site for the Contractor’s use.

E. Do not encumber site with materials or equipment.

F. Do not load structure or roadway with weight that will endanger or render unusable any structures or roadways.

G. Assume full responsibility for protection and safekeeping of products stored on premises.

H. Move any stored products which interfere with operations of Forest Service or other Contractor.

I. Return all surface areas to their original condition upon completion of the work.

PART 2 - PRODUCTS

Not Used.

PART 3 – EXECUTION

Not Used.

PART 4 – MEASUREMENT AND PAYMENT

Not Used

END OF SECTION 01010

SECTION 01300

SHOP DRAWINGS AND SUBMITTALS

1.01 SCOPE:

A. Perform all work necessary and required for the construction of the project as indicated. Such work includes but is not limited to the following:

1. Shop Drawings

2. Samples

3. Catalog Data

1.02 SUBMITTALS

A. Submittals shall include all pertinent data required to understand the quality of components, dimensional relationships, integration with other materials, assembly techniques, structural aspects, color, finish, texture, and other such characteristics as may be necessary to fully describe the item and its intended use.

2.01 SUBSTITUTIONS

A. Contracting Officer's approval required:

1. The Contract is based on the materials, equipment, and methods described in the Contract Documents.

2. The Contracting Officer will consider proposals for substitution of materials, equipment, and methods only when such proposals are accompanied by full and complete technical data and all other information required by the Contracting Officer to evaluate the proposed substitution.

3. Do not substitute materials, equipment, or methods unless such substitution has been specifically approved for this work by the Contracting Officer.

B. "Or equal":

1. Where the phrase "or equal" occurs in the Contract Documents, do not assume that material, equipment, or methods will be approved as equal by the Contracting Officer unless the item has been specifically approved for this work by the Contracting Officer.

2. The decision of the Contracting Officer shall be final.

C. Availability of specified items:

1. Verify prior to bidding that all specified items will be available in time for installation during orderly and timely progress of the work.

2. In the event specified item or items will not be available, so notify the

Contracting Officer prior to receipt of proposals.

3. Costs of delays because of non-availability of specified items, which such delays could have been avoided by the Contractor, shall be the responsibility of the Contractor.

PART 3 - EXECUTION

3.01 SUBMITTALS

A. Submittals and shop drawings shall be submitted in a timely fashion to allow 7 days for review by the Government. "No work shall begin until shops drawings and submittals are approved".

3.02 SHOP DRAWINGS

A. Original Submittal: A reproducible and four copies of all shop drawings shall be submitted for approval as required under 3.01 above prior to fabrication, installation or order placement to allow for checking and coordination. The Contracting Officer will retain the reproducible.

B. Resubmittal: When a resubmittal is required, one print so indicating will be returned to the Contractor. After revision of the original, a new reproducible and four copies shall be submitted for approval.

C. Approval: Once approved, stamped documents shall be returned to the

Contractor and shall be complied with as noted. Variation from the approved documents shall be likewise submitted and approved before being carried out.

3.03 SAMPLES

A. Original Submittal: Two samples of each item for which samples are required, unless otherwise specified, shall be furnished for approval. Approval shall be obtained prior to delivery of the material to the project site. These samples shall be representative of the actual material proposed for use in the project and of sufficient size to demonstrate design, color, texture and finish as they will appear in the completed installation.

B. Resubmittals: All rejected samples will be returned upon request and any or all resubmittals required shall consist of two new samples.

C. Approval: Upon approval, one sample so noted will be returned and the

Contracting Officer will retain the remainder until completion of the work. When requested, all approved samples will be returned for installation providing identity is maintained in an approved manner until final acceptance of the project.

3.04 CATALOG DATA

A. Submittals: Four copies of catalog data are required for the original submittal and each resubmittal. Catalog data shall be submitted along with shop drawings.

One copy will be returned unless additional copies are requested.

B. Data: Each submittal shall have all pertinent data contained therein that is applicable to the item submitted for approval.

3.05 IDENTIFICATION

A. Catalog Data: Each separate catalog brochure or page submitted shall have the identification shown. Catalog of brochures submitted containing multiple items for approval need have only cover identification. In such cases the identification shall include page and catalog item numbers.

B. In the event one or more of the multiple items are not approved in any submittal, the additional copies required will not be requested until all items are approved.

END OF SECTION 01300

SECTION 01560

SITE AND AREA CLEANUP

1.01 DESCRIPTION

A. Maintain work areas free from accumulations of waste, debris, dust and mud caused by Contractor's operations.

B. At completion of Work, remove all waste materials, tools, equipment, machinery, surplus materials; leave property clean; leave all rights of ways in a condition equal to that at the beginning of Work.

Not Used.

PART 3 - EXECUTION

3.01 DURING CONSTRUCTION

A. Execute cleaning to insure that any private property, grounds and especially access roads and public properties are maintained free from accumulation of waste materials, dust, mud and debris.

B. The Contractor shall keep all access roads clean and free of dust, mud and debris resulting from his own operations.

C. All waste materials, debris and rubbish shall be recycled or disposed of at legal solid waste facilities to be chosen and paid for by the Contractor.

D. If the Contractor does not properly clean up (in the opinion of the Contracting

Officer), then either the Contracting Officer shall have the option of using outside equipment to perform the work and such cost will be withheld from the Contract.

4.01 Measurement and Payment - Work included under this section shall be incidental to the pay items for each building listed in the Schedule of Items.

END OF SECTION 01560

SECTION 01900

MOBILIZATION

1.01 SCOPE:

A. This work consists of preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to the project site, and for all other work and operations that must be performed or that cause costs to be incurred prior to beginning work on the various items on the project site.

1.02 MEASUREMENT AND PAYMENT

A. The accepted quantities will be paid for at the contract unit price for item 01900

Mobilization.

B. Progress payments will be made as follows:

1. The Government will pay to the Contractor in the first progress payment the total premium paid by the Contractor to obtain bonds. This payment shall not be in addition to the contract price and will be included in Item 01900, Mobilization.

2. When 5 percent or more of the original contract amount is earned from other pay items, 50 percent of the amount for mobilization, or 5 percent of the original contract amount, whichever is less, will be paid.

3. When 10 percent or more of the original contract amount is earned from other pay items, 100 percent of the amount for mobilization, or 10 percent of the original contract amount, whichever is less, will be paid.

4. Upon completion of all work on the project, any unpaid amount for item

01900, Mobilization, will be paid.

C. The total of all payments will not exceed the original contract amount for item

01900, Mobilization.

PART 2 - PRODUCTS

Not Used

PART 3 – EXECUTION

PART 4 – MEASUREMENT AND PAYMENT

4.01 Measurement and Payment - Payment will be made for work included under this section. Payment for this work will be included in the contract unit price for Section 01900 - Mobilization.

END OF SECTION 01900

SECTION 02050

DEMOLITION

1.01 SCOPE OF WORK

A. Strip off all of the existing roof shingles, nails, felt or membrane underlayment, metal drip edge, existing ridge vents, gutters, downspouts and other flashing on all buildings listed in the Schedule of Items and legally dispose of all debris. Verify that the existing sheathing is in good condition, identifying for examination by the Forest Service all areas that show evidence of damaged sheathing. Should there be areas of sheathing or framing deterioration as determined by direct examination and in consultation with the Forest Service the damage areas shall be replaced by the Contractor.

B. Existing gutters and downspouts shall be removed. Replacement gutters and downspouts shall all be new.

C. Patching and Repairs- Perform all necessary patching and repairs to the items scheduled to remain.

1.02 QUALITY ASSURANCE

A. Requirements of Regulatory Agencies: Perform demolition work in accordance with applicable rules, regulations, codes, and ordinances of local, state and federal authorities, and in accordance with the requirements of public utility corporations having jurisdiction over the work.

B. Obtain and pay for necessary permits, licenses and certificates and give notices as required during the performance of the demolition work.

PART 2 – PRODUCTS

Not Used

PART 3 - EXECUTION

3.01 PREPARATION AND PROTECTION

A. The Ti Bar Guard Station and Smith River NRA Compounds will be occupied at all times during this contract.

B. Provide, erect and maintain catch platforms, lights, barriers, weather protection, warning signs and other items as required for the protection of the workers engaged in demolition operations, public, adjacent construction and occupants of the building.

C. Provide fire protection in accordance with local fire department requirements.

D. Do not close or obstruct streets or sidewalks. Conduct operations with minimum traffic interference.

E. Buildings shall have at least one unobstructed means of egress at all times.

The contract shall sequence the work to insure this at all times.

F. Protect public and private property adjacent to and on the job site, including landscaping, vents, utility lines, streets, sidewalks, light standards, hydrants, street signs, mail boxes and fences. Make repairs to the complete satisfaction of the owner of the damaged property. Contractor is responsible for all repair costs due to negligence.

G. Provide and maintain temporary protection of the existing structure where demolition and removal work is being done, connections made, materials handled or equipment moved, including but not limited to protecting areas where roofing has been re-moved and new work has not yet been made. At the end of the work day ensure the building is weather tight.

3.02 DEMOLITION

A. Perform demolition and removal work as indicated.

B. Remove from the government property and legally dispose of materials or items demolished and not designated to become the property of the Forest Service.

C. The project site will be occupied by employees and residents at all times during this contract. Execute the work in a careful and orderly manner, with the least possible disturbances to the public.

D. The Contractor shall have at least one person in charge of operations on the ground below shingle and other roof material removal operations. This person shall be cognizant of residents and other persons in the work area and shall remove debris that may obstruct passage or otherwise present a danger to employees or residents.

PART 4 – MEASUREMENT AND PAYMENT

4.01 Measurement and Payment - Work included under this section shall be incidental to the pay items for each building listed in the Schedule of Items.

END OF SECTION 02050

SECTION 06100

CARPENTRY

1.01 SCOPE OF WORK

A. The Contractor is responsible for verifying that roof components are sound and do not require replacement due to rot or damage. Roof components include but are not limited to roof deck, rafters, purlins, soffits, fascia, eaves and rakes.

B. Fasten existing sheathing to insure substrate meets the shingle manufacturer’s requirements and that it is fastened in accordance with the requirements of the most recent version of the California Building Code.

1.02 REFERENCES

Where the Specifications refer to a specific standard, other authoritative standards which ensure an equal or higher quality than the standards mentioned will also be acceptable.

1.03 STANDARDS

All material and workmanship shall be in accordance with the latest issue of the applicable standards of the U.S. Department of Commerce, Voluntary Product Standards (PS), American Wood-Preservers' Association (AWPA) for quality standard for each type of woodwork and quality grade indicated.

1.04 PRODUCT HANDLING

Keep rough carpentry material and work dry during delivery, storage and installation, until finish is applied and building is enclosed. Provide for air circulation in stacks of lumber and plywood.

2.01 LUMBER:

A. Lumber Size: - Provide dressed or worked and dressed lumber, as applicable, manufactured to the actual sizes and pattern to match the existing lumber to be replaced, unless otherwise indicated.

B. Moisture Content - Softwood Lumber: Provide kiln dried lumber having a moisture content from time of manufacture until time of installation not greater than values required by the applicable grading rules of the respective grading and inspection agency for the species and product indicated.

C. Lumber - Painted Finish: Use pieces which are made of solid lumber stock.

Paint material for exterior wood shall be by a manufacturer such as Sherwin Williams, Benjamin Moore and Co., Glidden, or other approved equal. Prime and seal wood required to be job-painted immediately upon delivery to job site; prime edges, ends, faces, undersides, and backsides of wood. Apply one coat primer and two coats finish paint to provide opaque, uniform finish, color, and coverage.

D. Lumber Species: Use same species and grade of lumber for same items throughout work, do not mix different species or grade.

2.02 PLYWOOD

A. Roof deck must be dry, APA rated sheathing (exposure 1): minimum 3/8” plywood.

B. Plywood Grading: Comply with Product Standard PS 1, "Construction and Industrial Plywood".

C. Certification and Marking: The producer shall include a Certificate of Inspection with each shipment. Grade mark each panel in compliance with applicable standards of Product Standard PS 1.

D. Moisture Content: Provide plywood which has been seasoned by kiln drying to a moisture content not to exceed 19%.

PART 3 - EXECUTION

3.01 CONDITION OF SURFACE

A. Examine substrates, adjoining construction, and conditions under which the work is to be installed. Notify the Owner of any deteriorated condition. Do not proceed with the work until unsatisfactory conditions detrimental to the proper and timely completion of the work have been corrected.

B. Whenever rough carpentry is fitted to other work, obtain measurements of such other work.

3.02 BLOCKING AND NAILERS

Provide blocking and nailers between framing members as required for fastening of sheathing, roofing, roof accessories, or attachment of fixtures, equipment and other such items.

3.03 PLYWOOD SHEATHING REPLACEMENT

A. Replacement sheathing shall be installed in accordance with the recommendations of the APA the Engineered Wood Association and the requirements of the most recent edition of the California Building Code.

B. Panel Size: Replacement panels shall be a minimum of 12” wide and shall span a minimum of two rafter/truss bays

C. Spacing: Perimeter space around new panels shall be a minimum of the diameter of a 10d common nail.

D. Fasteners: Minimum 8d common nails spaced at least 6” o.c. at the support edges and 12” o.c. at intermediate supports. Fasteners shall be a minimum 3/8” from all panel edges. In high wind areas additional fasteners shall be installed if requested by the Contracting Officer.

E. All panels shall be properly oriented so that panel grain runs perpendicular to the supports. Check trusses and rafters so that all new panels are install true and in a level plane. Shim Trusses and rafters as required preventing bows, bellies or other out of plane installations.

4.01 Measurement and Payment - Work included under this section shall be incidental to the pay items for each building listed in the Schedule of Items.

END OF SECTION 06100

SECTION 07311

FIBER GLASS-BASED ASPHALT SHINGLES

PART 1 – GENERAL

1.01 DESCRIPTION

Install new fiber glass-based asphalt shingles according to the following specifications.

1.02 RELATED SECTIONS

A. Section 06100 – Rough Carpentry; Section 07620 - Sheet Metal Flashings &

Trim.

1.03 REFERENCES

Applicable Standards and Codes:

• ASTM D 228 - Asphalt Roll Roofing, Cap Sheets, and Shingles Used in Roofing and

Waterproofing

• ASTM D 3018, Type 1 – Class A Shingles Surfaced with Mineral Granules

• ASTM D 3161, Class F - Wind-Resistance of Asphalt Shingles (Fan-Induced

Method)

• ASTM D 3462 – Asphalt Shingles Made from Glass felt and Surfaced with

Mineral Granules

• UL 790, Class A - Fire Test of Roof Covers

• UL 997, Wind Resistance of Prepared Roof Covering Materials

• CSA A123.5 – Asphalt Shingles Made from Glass Felt and Surfaced with Mineral

Granules

• Meet initial solar reflectance of .25 for ENERGY STAR® requirements

• Meet 2009 California Building Energy Efficiency Standards, Title 24, Part 6 requirements

1.04 SUBMITTALS

A. Submit copies of manufacturer’s product data sheets, detail drawings and samples for each type of roofing product.

1.05 QUALITY ASSURANCE

A. Manufacturer Qualifications: Provide all primary roofing products, including shingles, starter strip, ridge cap, underlayment and self-http://roofing.owenscorning.com/homeowner/shingles/california-energy-efficiency-standard.aspx adhering ice/water barrier by a single manufacturer. Provide ridge ventilation with Class A fire rating by separate manufacturer.

B. Installer Qualifications:

1. Installer must follow manufacturers published installation instructions

2. Installer shall be licensed in the State of California as a General

Building Contractor as defined by Business & Professions Code Division 3, Chapter 9. Contractors, Article 4. Classifications.

1.06 REGULATORY REQUIREMENTS

A. Provide a roofing system achieving an Underwriters Laboratories

(UL) Class A fire classification.

B. Provide a roofing system achieving an ENERGY STAR® rating.

C. Provide a roofing system achieving a COOL ROOF RATING COUNCIL

(CRRC).

D. Install all roofing products in accordance with all federal, state and local building codes.

E. All work shall be performed in a manner consistent with current OSHA guidelines.

1.07 DELIVERY, STORAGE, AND HANDLING

A. Store all products in manufacturer's unopened, labeled packaging until they are ready for installation.

B. Store products in a covered, ventilated area, at temperature not more than 110 degrees F (43 degrees C); do not store near steam pipes, radiators, or in direct sunlight.

C. Store bundles on a flat surface. Maximum stacking height shall not exceed manufacturers recommendations. Store all rolls on end.

D. Store and dispose of solvent-based materials in accordance with all federal, state and local regulations.

1.08 WEATHER CONDITIONS

Proceed with work only when existing and forecasted weather conditions will permit work to be performed in accordance with manufacturer’s recommendations.

1.09 WARRANTY

Provide to the owner the manufacturers prorated standard warranty coverage for materials in the event of a material defect for Limited Lifetime, including 10 years coverage for materials and labor costs to repair, replace or recover defective shingles.

PART 2 – PRODUCTS

2.01 ROOFING COMPONENTS

A. ASPHALT SHINGLES. Owens Corning Duration Premium Cool Shingles with Sure Nail Technology. Color to be selected by the Contracting Officer.

B. HIP AND RIDGE SHINGLES. Owens Corning DecoRidge Hip and Shingles with

Sealant. Color to match roof shingle color selected by Contracting Officer.

C. STARTER SHINGLES. Owens Corning Starter Strip Shingle (nail applied).

C. WEATHERLOCK SELF-SEALING ICE & WATER BARRIER. Owens

Corning WeatherLock “G”.

D. SHINGLE UNDERLAYMENT. Owens Corning Deck Defense High Performance

Roof Underlayment.

E. ATTIC VENTILATION. Lomanco, Lo-OmniRidge, Lo-Profile ridge vent LOR-4FR

F. FLAT ROOF PORTIONS. Use and APP modified bitumen roofing membrane, torch applied with fiberglass base sheet.

2.02 FASTENERS

A. Fastener requirement: Use galvanized steel, stainless steel, or aluminum nails minimum 12 gauge shank with 3/8” diameter head. Fasteners shall comply with ASTM F 1667. Check local building codes and manufacturers recommendations.

B. All fasteners must be driven flush with the shingle surface and penetrate at least ¾” into the wood deck. Where the deck is less than ¾” thick, the fastener should be long enough to penetrate fully and extend at least 1/8” through APA rated roof sheathing.

C. Contractor shall use nails as the preferred method of attaching shingles to wood decking or other nailable substrates.

PART 3: EXECUTION

3.01 EXAMINATION

A. Prior to starting work, examine all roof decks on which work is to be applied for defects in materials and workmanship which may be detrimental to the proper installation or long-term performance of the shingles.

B. Do not begin installation until the roof deck and other roof components have been properly prepared.

3.02 PREPARATION

A. Remove all existing roofing down to the roof deck. Verify that the deck is dry, sound, clean and smooth. It shall be free of any depressions, waves, and projections. Cover with sheet metal, all holes over 1 inch in diameter, cracks over 1/2 inch in width, loose knots and excessively resinous areas.

B. Clean deck surfaces thoroughly prior to installation of eaves protection membrane and underlayment.

C. Install crickets on the upslope side of all chimneys, any chimney wider than 24”, and on all roofs steeper than 6/12.

D. Verify that the deck is structurally sound and free of deteriorated decking.

All deteriorated decking shall be removed and replaced with new materials.

3.03 INSTALLATION

A. Install using methods recommended by manufacturer and in accordance with local building codes. When local codes and application instructions are in conflict, the more stringent requirements shall take precedence.

3.04 ROOFING

Underlayment

A. Eaves In areas where there has been a history of ice forming along the eaves causing a backup, a self-adhering membrane must extend 24 inches inside the exterior wall line of the building

B. On all roofs between 2/12 and 4/12 (low slopes) install self-adhering membrane up the slope from eaves edge a full 36 inches or to at least 24 inches beyond the interior “warm wall”. Lap ends 6 inches.

C. At valleys, install self-adhering membrane at least 36 inches wide and centered on the valley. Lap ends 6 inches and seal.

D. Where valleys are indicated to be "open valleys", install metal flashing over eaves protection membrane before roof deck underlayment is installed; DO NOT nail through the flashing. Secure the flashing by nailing at 18 inches on center just beyond edge of flashing so that nail heads hold down the edge.

Roof Deck

A. On roofs sloped at more than 4 in 12, lap horizontal edges at least 2 inches and at least 2 inches over eaves protection membrane. Lap ends at least 4 inches.

End laps in succeeding course should be located at least 6’ from end laps in the preceding course.

B. Lap underlayment over valley protection at least 6 inches.

Penetrations

A. Vent pipes: Install a 24 inch square piece of eaves protection membrane lapping over roof deck underlayment; seal tightly to pipe.

B. Vertical walls: Install eaves protection membrane extending at least 3-4 inches up the wall and 12 inches on to the roof surface. Lap the membrane over the roof deck underlayment.

C. Chimneys: Install eaves protection membrane around entire chimney extending at least 6 inches up the wall and 12 inches on to the roof surface.

Lap the membrane over the roof deck underlayment.

3.05 SUBMITTALS

A. Manufacturer color sample showing full range of colors available for specified products.

B. Product literature and recommended installation procedures.

C. Manufacturer’s warranty.

END OF SECTION 07311

SECTION 07620

SHEET METAL FLASHING AND TRIM

1.02 DESCRIPTION

Install all new metal flashing and trim according to the following specifications.

1.02 SUMMARY

A. This Section includes sheet metal flashing and trim in the following categories:

1. Roof-drainage systems.

2. Exposed trim, stops, and fascia.

3. Copings.

4. Metal flashing.

5. Roof jacks

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

1. Division 7 Section "Fiberglass Base Asphalt Shingles" for roof system.

1.03 PERFORMANCE REQUIREMENTS

A. General: Install sheet metal flashing and trim to withstand wind loads, structural movement, thermally induced movement, and exposure to weather without failing.

1.04 SUBMITTALS

A. General: Submit each item in this Article according Division 1 “Shop Drawings and Submittals”.

B. Product Data including manufacturer's material and finish data, installation instructions, and general recommendations for each specified flashing material and fabricated product.

C. Shop Drawings of each item specified showing layout, profiles, methods of joining, and anchorage details.

D. Samples of sheet metal flashing, trim, and accessory items, in the specified finish.

1. 8-inch-square Samples of specified sheet materials to be exposed as finished surfaces.

1.05 QUALITY ASSURANCE

A. Regulatory Requirements: In addition to local governing regulations, comply with the latest edition of the applicable provisions of the following:

1. National Association of Architectural Metal Manufacturers. (N.A.A.M.M.)

B. Installer Qualifications: Engage an experience Installer who has completed sheet metal flashing and trim work similar in material, design, and extent to that indicated for this Project and with a record of successful in-service performance.

1.06 PROJECT CONDITIONS

A. Coordinate Work of this Section with interfacing and adjoining Work for proper sequencing of each installation. Ensure best possible weather resistance, durability of work, and protection of materials and finishes.

PART 2 - PRODUCTS

2.01 METALS

A. Stainless-Steel Sheet: ASTM A 167, Type 304, soft annealed, with No. 2D finish, except where harder temper is required for forming or performance; minimum

0.0187 inch thick, unless otherwise indicated.

B. Galvanized Steel Sheet: ASTM A 526, G 90, commercial quality, or ASTM A 527, G 90, lock-forming quality, hot-dip galvanized steel sheet with 0.20 percent copper, mill phosphatized where indicated for painting; not less than 0.0396 inch thick, unless otherwise indicated.

2.02 MISCELLANEOUS MATERIALS AND ACCESSORIES

A. Gutters: Material shall be aluminum, 5” K Style Ogee seamless gutter, minimum gauge 0.027. Downspouts 3” x 4”, minimum gauge 0.024. Gutter and downspout colors will be selected by the Forest Service.

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

C. Asphalt Mastic: SSPC-Paint 12, solvent-type asphalt mastic, nominally free of sulfur and containing no asbestos fibers, compounded for 15-mil dry film thickness per coat.

D. Elastomeric Sealant: Generic type recommended by sheet metal manufacturer and fabricator of components being sealed and complying with requirements for joint sealants.

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

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 thickness required for performance.

G. Aluminum Drip Edge: Minimum .024" aluminum sheet style-D drip edge, brake-formed to provide a minimum 1¼” inch flange with 3/8" drip at lower edge by minimum 6 1/2” roof deck flange. Furnish in 8' or 10’ lengths. Do install drip edge in pieces shorter than 24”. Color to be selected by the Contracting Officer.

2.03 FABRICATION, GENERAL

A. Sheet Metal Fabrication Standard: Fabricate sheet metal flashing and trim to comply with recommendations of SMACNA's "Architectural Sheet Metal Manual" that apply to the design, dimensions, metal, and other characteristics of the item indicated.

B. Comply with details shown to fabricate sheet metal flashing and trim that fit substrates and result in waterproof and weather-resistant performance once installed. Verify shapes and dimensions of surfaces to be covered before fabricating sheet metal.

C. Form exposed sheet metal Work that is without excessive oil canning, buckling, and tool marks and that is true to line and levels indicated, with exposed edges folded back to form hems.

D. Seams: Fabricate nonmoving seams in sheet metal with flat-lock seams.

E. Expansion Provisions: Space movement joints at maximum of 10 feet with no joints allowed within 24 inches of corner or intersection. Where lapped or bayonet-type expansion provisions in work cannot be used or would not be sufficiently weatherproof and waterproof, form expansion joints of intermeshing hooked flanges, not less than 1 inch deep, filled with mastic sealant (concealed within joints).

F. Sealed Joints: Form nonexpansion, but movable, joints in metal to accommodate elastomeric sealant to comply with SMACNA standards.

G. Separate metal from noncompatible metal or corrosive substrates by coating concealed surfaces at locations of contact with asphalt mastic or other permanent separation as recommended by manufacturer.

H. Conceal fasteners and expansion provisions where possible. Exposed fasteners are not allowed on faces of sheet metal exposed to public view.

I. Fabricate cleats and attachment devices from same material as sheet metal component being anchored or from compatible, noncorrosive metal recommended by sheet metal manufacturer.

1. Size: As recommended by SMACNA manual or sheet metal manufacturer for application but never less than thickness of metal being secured.

2.04 SHEET METAL FABRICATIONS

A. General: Fabricate sheet metal items in thickness or weight needed to comply with performance requirements.

PART 3 - EXECUTION

3.01 EXAMINATION

A. Examine substrates and conditions under which sheet metal flashing and trim are to be installed and verify that Work may properly commence. Do not proceed with installation until unsatisfactory conditions have been corrected.

3.02 INSTALLATION

A. General: Unless otherwise indicated, install sheet metal flashing and trim to comply with performance requirements, manufacturer's installation instructions, and SMACNA's "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. Install exposed sheet metal Work that is without excessive oil canning, buckling, and tool marks and that is true to line and levels indicated, with exposed edges folded back to form hems. Install sheet metal flashing and trim to fit substrates and to result in waterproof and weather-resistant performance. Verify shapes and dimensions of surfaces to be covered before fabricating sheet metal.

C. Roof-Edge Flashings: Secure metal flashings at roof edges per most current Uniform Building Code.

D. Expansion Provisions: Provide for thermal expansion of exposed sheet metal Work.

Space movement joints at maximum of 10 feet with no joints allowed within 24 inches of corner or intersection. Where lapped or bayonet-type expansion provisions in Work cannot be used or would not be sufficiently weatherproof and waterproof, form expansion joints of intermeshing hooked flanges, not less than 1 inch deep, filled with mastic sealant (concealed within joints).

E. Sealed Joints: Form nonexpansion, but movable, joints in metal to accommodate elastomeric sealant to comply with SMACNA standards. Fill joint with sealant and form metal to completely conceal sealant.

1. Use joint adhesive for nonmoving joints specified not to be soldered.

F. Seams: Fabricate nonmoving seams in sheet metal with flat-lock seams.

G. Separations: Separate metal from noncompatible metal or corrosive substrates by coating concealed surfaces, at locations of contact, with asphalt mastic or other permanent separation as recommended by manufacturer.

H. Counterflashings: Coordinate installation of counterflashings with installation of assemblies to be protected by counterflashing. Install counterflashings in reglets or receivers. Secure in a waterproof manner by means of snap-in installation and sealant, lead wedges and sealant, interlocking folded seam, or blind rivets and sealant. Lap counterflashing joints a minimum of 2 inches and bed with sealant.

I. Roof-Penetration Flashing: Coordinate roof-penetration flashing installation with roofing and installation of items penetrating roof.

3.03 CLEANING AND PROTECTION

A. Clean exposed metal surfaces, removing substances that might cause corrosion of metal or deterioration of finishes.

B. Provide final protection and maintain conditions that ensure sheet metal flashing and trim Work during construction is without damage or deterioration other than natural weathering at the time of Substantial Completion.

PART 4 – MEASUREMENT AND PAYMENT

END OF SECTION 07620