Attachment_3_-_Specifications.pdf

Mogollon Rim Roof Replacements Attachment 3

SPECIFICATIONS

USDA Forest Service

Coconino National Forest

Mogollon Rim (Blue Ridge) Ranger District, Happy Jack Work Center & Baker Butte

Lookout Cabin

Roof Replacements

Prepared by:

Coconino National Forest

Facilities Engineering

May 2015

DIVISION 1 GENERAL

SUMMARY OF WORK - 01010

PART 1 - GENERAL

1.1 – Location

The project is located at the Mogollon Rim (also known as Blue Ridge) Ranger

District of the Coconino National Forest. The buildings are located at the

Mogollon Rim ranger station approximately 61 miles southeast of Flagstaff on

State Route 87, Happy Jack work center off Coconino County Road 3 and Baker

Butte Lookout off forest road 300. From Flagstaff, AZ, proceed south on

Coconino County Road 3 for approximately 53 miles to the intersection of State

Route 87. Turn left and proceed approximately 8 miles to the Ranger Station, which is on the south side of the road. Driving time from Flagstaff is approximately 1 hour and 15 minutes. Happy Jack WC from Flagstaff, AZ, proceed south on Coconino County Road 3 for approximately 40 miles to the work center. Driving time from Flagstaff is approximately 45 minutes. Baker

Butte Lookout from Flagstaff, AZ, proceed on Lake Mary Road (FH-3) for approximately 53 miles to Clint’s Well. Turn right onto State Highway 87 towards Payson and proceed approximately 9 miles to FSR 300, which is on the left side of the road. Proceed approximately 1.5 miles to Baker Butte Lookout on the right side. Driving time from Flagstaff is approximately 2 hours.

1.2 – Project Description

The contractor shall replace roofs on residental buildings identified in Attachment 4

- List of Buildings. There are five different roofs that vary in pitch from 2:12 to

6:12 that will be re-covered using an Owens Corning standard 3-tab single, or equal.

The total roof area is estimated to be 16,730 square feet; the installer must verify all estimates. The new roofing system shall include all the manufacturer’s compatible accessories including, but not limited to; new roof felt, roof jacks, appliance vent stacks, edge and corner components, drip flashing, term bars, curbs, etc. The existing shingles or rolled roof sections and felt will be completely removed and disposed. Varied roof elevations on building additions expose walls that may require the replacement of the deep flashing at roof level. The project includes all labor, materials, and equipment necessary to perform all the operations for the work specified. The contractor shall also provide pricing to replace all existing asphalt roof systems with new metal roofing systems (see Alternate Items on the Schedule of Items.

There is one 8:12 pitch roof to be recovered located at Baker Butte Lookout Tower using metal roofing. The total roof area for this one is estimated to be 500 square feet; the installer must verify all estimates. The new roofing system shall include all the manufacturer’s compatible accessories including, but not limited to;

new roof felt, roof jacks, appliance vent stacks, edge and corner components, drip flashing, term bars, curbs, etc. The existing metal roofing sections and felt will be completely removed and disposed. Varied roof elevations on building additions expose walls that may require the replacement of the deep flashing at roof level.

The project includes all labor, materials, and equipment necessary to perform all the operations for the work specified.

1.3 - Timing of Work

No restrictions are placed on weekend work. Monday through Friday work is preferred.

1.4 - Government-Furnished Facilities

A. The site is available to the Contractor for staging and storage during the project. Any damage resulting from the Contractor’s use of the site will be repaired or replaced at the Contractor’s expense.

B. Sanitary facilities for construction workers will be available at the various sites.

C. Electricity is available on site at the Ranger Station and Work Center.

D. Electricity is not available at the Baker Butte site.

1.5 - Material Sources

All materials shall be obtained from a commercial source unless noted otherwise.

Materials referred to by trade name, make, or catalog number shall be regarded as establishing a standard of quality; substitutions of equal quality can be made by submitting a data sheet of the proposed substituted item to the Contracting

Officer’s Representative, for approval.

1.6 - Clean up and Disposal

A. Material staging or waste accumulation in approved containers is allowed at places designated by the COR.

B. Disposal of waste material will be off National Forest Land and in compliance with local, state and federals laws regarding disposal of construction waste.

C. Before final acceptance of the project by the Government, the Contractor shall remove from Government land all waste materials and rubbish resulting from this work.

1.7 - Precautionary Measures

A. Environmental Protection: All vehicles and equipment entering the project area must be clean of noxious weeds and will be subject to inspection. Wash all construction equipment to thoroughly remove all dirt, plant, and other foreign material prior to entering the project. Particular attention must be given to the under carriage and any surface where soil containing exotic seeds may exist.

Protection of Work: The Contractor shall take precautions to protect all work during the construction period and shall provide and maintain adequate protection during severe weather conditions to prevent damage to the building, work surface, materials and equipment.

Safety: The Contractor is responsible for safeguarding employees, public, existing facilities, and forest resources from his operations. All operations shall comply with the requirements and restrictions of OSHA, the Arizona Occupational Safety and Health Code, and the Workman’s

Compensation Board. The installer will follow all manufacturers’ instructions for the roof system application.

Security: No security shall be provided by the Government. The Contractor shall take all precautions deemed necessary to secure the worksite, improvements and equipment.

1.8 – Applicable Codes and Standards

All work shall conform to the latest editions of the International Building Code, International

Plumbing Code, and International Mechanical Code.

END OF SPECIFICATION 01010

DIVISION 1 - GENERAL

MEASUREMENT AND PAYMENT - 01103

PART 1 - GENERAL

1.1 – Requirements:

Measurement and payment for contract work will be made only for and under those pay items included in the SCHEDULE OF ITEMS. All other work and materials will be considered incidental to and included in the payment of the pay items in the SCHEDULE OF ITEMS.

1.2 – Payment:

The following method of measurement for determining final payment is DESIGNATED on the

SCHEDULE OF ITEMS for each pay item.

Lump Sum Quantity (LSQ). This denotes one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job.

END OF SPECIFICATION 01103

SUBMITTALS - 01300

PART 1 - GENERAL

1.1– Requirements

It will be the Contractor’s responsibility to submit all items with such promptness as to cause no delay in the work. Approvals must be obtained before starting the work that involves the items.

1.2– Manufacturer’s Literature

Submit one copy to the Contracting Officer’s Representative for approval on the items required herein.

Submittals are required per the following sections:

A. 01730 Operations and Maintenance Data

O&M / product data for the roofing system

Manufacturer’s and/or Installer’s warranties

END OF SPECIFICATION 01300

DIVISION 1-GENERAL REQUIREMENTS

01601 – MOBILIZATION

PART 1 – GENERAL

1.1 - Description

This work shall consist 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.

PART 2 – PRODUCTS

None

PART 3 – EXECUTION

None

PART 4 – MEASUREMENT AND PAYMENT

Progress payments will be made as follows:

The Contractor can request payment for performance and payment bonds. The amount of the premium, including coinsurance and reinsurance agreements, will be paid upon receipt of evidence of full payment to the surety. When separate payment for bonding cost is made, the bonding cost will be subtracted from the total contract amount for this pay item and the balance paid in accordance with the progress payment schedule outlined below.

(a) 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.

(b) 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.

(c) Upon completion of all work on the project, any unpaid amount for mobilization will be paid.

Any bonding costs in excess of the total contract amount of this pay item will be paid under one or more other pay items under this contract as determined by the

Contracting Officer. In no circumstance will the total amount of this contract be increased as a result of bonding costs exceeding the total contract amount of this pay item.

The total of all payments shall not exceed the original contract amount for this item.

4.2 – Payment

Payment will be made under:

PAY ITEM DESCRIPTION PAY UNIT

01601(01) Mobilization LS

END OF SPECIFICATION 01601

WARRANTIES - 01730

PART 1 - GENERAL

1.1– Requirements

The Contractor will warranty all parts and labor associated with the project according to the type of roofing materials installed per individual specifications from the completion date.

1.2 – Related Work

01300 – Submittals

07317 – Asphalt Shingle Roof System

07410 – Preformed Metal Roofing System

07530 – Single Ply Membrane Roofing System

1.3– Manufacturer’s and Contractor’s Warranty Literature

The Contractor will provide literature that will list the proper warranty procedures to follow in the event of roof leakage or failure. The literature will list instances that might affect the validity of the warranties.

END OF SPECIFICATION 01730

DIVISION 5 - METALS

STRUCTURAL METAL - 05100

PART 1 - GENERAL

1.1 - Description

Perform all work necessary and required for the construction of the project as related to the following:

(1) Fabricated steel elements.

(2) Rolled steel forms.

(3) Hurricane anchors, ridge rafter connectors, etc.

1.2 - Related Work Specified Elsewhere

05500 - Metal Fabrication

07410 – Preformed Metal Roofing

PART 2 - PRODUCTS

2.1 - Structural Steel

Steel plate, tubing, bars, and structural shapes shall conform to ASTM A36.

2.2 - Fabricated Steel Elements

Fabricated steel connectors shall be Simpson or approved equal and shall comply with ICBO

Research Recommendation No. 1211.

2.3 - Fasteners

Bolts, nuts, and washers shall conform to ASTM A307 (Grade A hex type), A563-82.

PART 3 - EXECUTION

3.1 Erection

Erection shall conform to AISC Specifications and Standards and manufacturer's recommendations.

3.2 Welding

Welding shall conform to AWS Standards and Requirements.

PART 4 - MEASUREMENT AND PAYMENT

4.1 - Measurement

The work specified herein will not be measured for payment.

4.2 - Payment

This work is incidental to other items in this contract and direct separate item payment will not be made.

END OF SPECIFICATION 05100

DIVISION 5 - METALS

METAL FABRICATIONS - 05500

PART 1 - GENERAL

1.1 - Description

This section specifies miscellaneous fabricated metal items.

1.2 - Related Work Specified Elsewhere

05100 – Structural Metal

07410 – Preformed Metal Roofing

1.3 - Submittals

Submit three (3) sets of shop drawings for each fabricated item unless otherwise specified.

1.4 - Quality Assurance

Welding shall conform to AWS Standards and Requirements.

PART 2 - PRODUCTS

2.1 - Steel

Steel plate and bars shall conform to ASTM A36.

Bolts, nuts and washers shall conform to ASTM A307, A563, and F436.

PART 3 - EXECUTION

3.1 - Construction

Items to be fabricated shall be constructed to the size and dimensions verified in the field.

3.2 - Welding

Minimum weld, 1/8" fillet or butt welds unless otherwise stated. Grind exposed welds smooth.

Clean all welds.

3.3 - Painting

All metal elements shall be painted.

Prime all fabricated elements in the shop.

3.4 - Installation

At final installation, all fabricated metal items shall be rigid and secure.

PART 4 - MEASUREMENT AND PAYMENT

4.1 - Measurement

All other work specified herein will not be measured for separate payment and is considered incidental to other work items specified in this contract.

4.2 - Payment

This work is incidental to other items in this contract and direct separate item payment will not

END OF SPECIFICATION 05500

SECTION 6 WOOD

CARPENTRY- 06100

PART 1 - GENERAL

1.1 - Scope

Work Included: Perform all work necessary and required for the construction of the project as indicated. Such work includes, but is not necessarily limited to, the furnishing and installing of all carpentry work as needed and specified herein.

1.2 - Related Work Specified Elsewhere

07410 - Preformed Metal Roofing

07900 - Caulking and Sealants

1.3 - Codes and Standards

The "International Building Code", Current Edition, is hereby made a direct part of this specification, and all carpentry work included in this contract shall conform with the applicable requirements therein except as modified herein.

1.4 - Miscellaneous Items

Carpentry work and miscellaneous items and their related components which are to be furnished and/or installed under this Section are not necessarily individually described. Rough carpentry work and miscellaneous items not mentioned or described shall be furnished and/or installed in accordance with the intent of drawings and specifications and as required to complete the work.

PART 2 - PRODUCTS

2.1 - Materials

Framing Lumber: Grading of lumber shall comply with the "Standard Grading and Dressing

Rules" No. 15 of the West Coast Lumber Inspection Bureau. Grade shall be stamped on lumber at the mill.

(a) Rafters shall be Grade 2 & BTR D.F.

(b) Plates in contact with concrete and masonry walls shall be pressure treated Grade

2 & BTR D.F.

(c) All trim shall be rough-cut BTR D.F.

(d) Plywood shall be graded in accordance with Product Standard PS-1. Furnish sheets identifiable by a grade mark of a recognized grading association.

Hardware: Furnish all items of hardware, required to complete the work. Bolts, nuts, and washers shall be hot-dipped galvanized, conforming to ASTM-A153. All exposed hardware shall be vandal-resistant.

(a) Nails: Common wire. Use galvanized nails for all exposed framing.

(b) Bolts: Standard mild steel, square or hexagonal head machine bolts with matching nuts and cut washers as indicated.

(c) Screws: Standard #10-16x1" Phillips drive wafer head screws.

2.2 - Cement Board

Cement board planks, boards, battens, soffit, and trim shall be hardiplank, hardisoffit and harditrim by James Hardi Building Products, or approved equal. Material dimensions & finish shall be as needed.

PART 3 - EXECUTION

3.1 - Installation

Installation of cement board shall be in strict conformance with manufacturer's recommendations.

Installation of carpentry and millwork shall conform to the applicable requirements of the A.W.I.

"Architectural Woodwork Institute".

Use only hot-dipped galvanized nails for installation of finish carpentry work. For securing all exterior members, face nail with common or box nails, driven flush. Where other anchorage details are shown, use appropriate hardware hot-dip galvanized.

Secure all trim with finishing nails, hot-dip galvanized or aluminum. Do not penetrate bottom of plywood in exposed areas.

Secure metal roofing panels to plywood with screws to meet design loads.

No members shall be spliced unless approved by Engineer.

All work shall be installed to details shown, plumb, level, true to line, and securely anchored.

Nails shall be neatly set and all wood raised in the driving of nails removed. Exterior corner joints shall be mitered.

Prepare all woodwork installed hereunder by cleaning and sanding as required to receive finishes.

Hammer or toolmarks or marred surfaces and edges will not be acceptable on exposed finished surfaces, and shall be the basis for rejection of such work.

PART 4 - MEASUREMENT AND PAYMENT

4.1 - Measurement

The work specified herein will not be measured for payment.

4.2 - Payment

This work is incidental to other items in this contract and direct separate item payment will not

END OF SPECIFICATION 06100

SECTION 07317

ASPHALT SHINGLE ROOF SYSTEM

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 1 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes the following:

1. Asphalt shingle roofing.

2. Felt underlayment.

B. Related Sections include the following:

1. Division 7 Section "Sheet Metal Flashing and Trim" for metal roof-penetration flashings, counterflashings and flashings not part of this Section.

1.3 DEFINITIONS

A. Roofing Terminology: Refer to ASTM D 1079 and glossary of NRCA's "The NRCA

Roofing and Waterproofing Manual" for definitions of terms related to roofing work in this Section.

1.4 SUBMITTALS

A. Product Data: For each type of product indicated.

B. Samples for Initial Selection: For each type of wood shake, hip and ridge indicated.

1. Include similar Samples of trim and accessories involving color selection.

C. Samples for Verification: For the following products, of sizes indicated, to verify color selected.

1. Asphalt Shingles: Full size.

2. Hip and Ridge Unit: Full size.

D. Qualification Data: For Installer.

E. Research/Evaluation Reports: For asphalt shingles.

F. Maintenance Data: For asphalt shingles to include in maintenance manuals.

G. Warranties: Special warranties specified in this Section.

1.5 QUALITY ASSURANCE

A. Installer Qualifications: A qualified installer who is an approved affiliate member of

CSSB.

B. Grading Agency Qualifications: An independent testing and inspecting agency recognized by authorities having jurisdiction as qualified to label asphalt shingles for compliance with referenced grading rules.

C. Source Limitations: Obtain asphalt shingles and products through one source from a single manufacturer.

D. Fire-Test-Response Characteristics: Provide asphalt shingles and related roofing materials with the fire-test-response characteristics indicated, as determined by testing identical products per test method indicated below by UL or another testing and inspecting agency acceptable to authorities having jurisdiction. Identify materials with appropriate markings of applicable testing and inspecting agency.

1. Exterior Fire-Test Exposure: Class B; UL 790 or ASTM E 108 with

ASTM D 2898, for application and roof slopes indicated.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Store underlayment rolls on end on pallets or other raised surfaces. Do not double-stack rolls.

1. Handle, store, and place roofing materials in a manner to avoid significant or permanent damage to roof deck or structural supporting members.

B. Protect unused underlayment from weather, sunlight, and moisture when left overnight or when roofing work is not in progress.

1.7 PROJECT CONDITIONS

A. Weather Limitations: Proceed with installation only when existing and forecasted weather conditions permit roofing to be performed according to manufacturer's written instructions and warranty requirements.

1. Install sheet underlayment within the range of ambient and substrate temperatures recommended by manufacturer.

1.8 WARRANTY

A. Special Warranty: CSSB's standard form in which CSSB agrees to repair or replace asphalt shingles and related roofing material that fail in materials within specified warranty period. Material failures include manufacturing defects that result in leaks.

1. Material Warranty Period: 20 years for asphalt shingles, and 20 years for manufactured hip and ridge units, from date of Substantial Completion.

B. Special Project Warranty: Roofing Installer's warranty, on warranty form at end of this

Section, signed by roofing Installer, covering Work of this Section, in which roofing

Installer agrees to repair or replace components of wood shake roofing that fail in materials or workmanship within the following warranty period:

1. Warranty Period: Five years from date of Final Acceptance.

1.9 EXTRA MATERIALS

A. Furnish extra materials described below that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.

1. Asphalt Shingles: 50 sq. ft of each type, in unbroken bundles.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. In other Part 2 articles where titles below introduce lists, the following requirements apply to product selection:

1. Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to, products specified.

2. Products: Subject to compliance with requirements, provide one of the products specified.

3. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work specified.

4. Manufacturers: Subject to compliance with requirements, provide products by one of the manufacturers specified.

5. If using roof shingle ridge and hip units, select applicable options from paragraph and

2.2 ROOF SHINGLES

A. Asphalt Shingles: Match existing shingles in size and color.

2.3 UNDERLAYMENT MATERIALS

A. Roof Felt Underlayment: ASTM D 226 or ASTM D 4869, Type II, asphalt-saturated organic felt.

B. Roof Felt Interlayment: ASTM D 226 or ASTM D 4869, Type II, asphalt-saturated organic felt.

1. Minimum Net-Free Area:

2. Width:

3. Thickness:

2.4 ACCESSORIES

A. Asphalt Roofing Cement: ASTM D 4586, Type II, asbestos free.

B. Roofing Nails: ASTM F 1667; aluminum wire nails, sharp-pointed, and of sufficient length to penetrate a minimum of 3/4 inch into sheathing.

1. Use box-type nails for wood shakes.

2. Where nails are in contact with metal flashing, use nails made from same metal as flashing.

C. Felt Underlayment Nails: Aluminum, stainless-steel, or hot-dip galvanized steel wire nails with low-profile capped heads or disc caps, 1-inch (25-mm) minimum diameter.

2.5 METAL FLASHING AND TRIM

A. Fabricate sheet metal flashing and trim to comply with recommendations in SMACNA's

"Architectural Sheet Metal Manual" that apply to design, dimensions, metal, and other characteristics of item.

1. Apron Flashings: Fabricate with lower flange a minimum of 4 inches over and 4 inches beyond each side of downslope wood roofing and 6 inches up the vertical surface.

2. Open-Valley Flashings: Fabricate in lengths not exceeding 10 feet with 1-inch-high, inverted-V profile at center of valley and equal flange widths of 10 inches.

3. Drip Edges: Fabricate in lengths not exceeding 10 feet with 2-inch roof-deck flange and 1-1/2-inch fascia flange with 3/8-inch drip at lower edge.

PART 3 - EXECUTION

3.1 EXAMINATION

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

1. Examine roof sheathing to verify that sheathing joints are supported by framing and blocking or metal clips and that installation is within flatness tolerances.

2. Verify that substrate is sound, dry, smooth, clean, sloped for drainage, and completely anchored; and that provision has been made for flashings and penetrations through roofing.

3. For the record, prepare written report, endorsed by Installer, listing conditions detrimental to performance of work.

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

3.2 ROOF UNDERLAYMENT INSTALLATION

A. Single-Layer Roof Felt Underlayment: Install single layer of roof felt underlayment on roof deck perpendicular to roof slope in parallel courses. Lap sides a minimum of 2 inches over underlying course. Lap ends a minimum of 4 inches Stagger end laps between succeeding courses at least 72 inches. Fasten with felt underlayment nails.

1. Apply a continuous layer of asphalt roofing cement over starter course and on roof felt underlayment surface to be concealed by succeeding courses as each roof felt course is installed. Apply over entire roof.

B. Metal-Flashed Open-Valley Underlayment: Install 2 layers of 36-inch- wide roof felt underlayment centered in valley. Stagger end laps between layers at least 72 inches.

Lap ends of each layer at least 12 inches in direction to shed water, and seal with asphalt roofing cement. Fasten each layer to roof deck with felt underlayment nails.

1. Lap roof-deck roof felt underlayment over first layer of valley roof felt underlayment at least 6 inches

3.3 METAL FLASHING INSTALLATION

A. General: Install metal flashings and other sheet metal to comply with requirements in

Section "Sheet Metal Flashing and Trim."

1. Install metal flashings according to wood roofing recommendations in NRCA's

"The NRCA Roofing and Waterproofing Manual."

B. Apron Flashings: Extend lower flange over and beyond each side of downslope wood roofing and up the vertical surface.

C. Step Flashings: Install with a headlap of 3 inches and extend over the underlying wood roofing and up the vertical surface. Install with lower edge of flashing just upslope of, and concealed by, butt of overlying shingle or shake. Fasten to roof deck only.

D. Cricket Flashings: Install against the roof-penetrating element extending concealed flange beneath upslope wood roofing and beyond each side.

E. Open-Valley Flashings: Install centrally in valleys, lapping ends at least 8 inches in direction to shed water. Fasten upper end of each length to roof deck beneath overlap.

1. Secure hemmed flange edges into metal cleats spaced 12 inches apart and fastened to roof deck.

2. Adhere 9-inch wide strip of self-adhering sheet to metal flanges and to self-adhering sheet underlayment.

F. Rake Drip Edges: Install rake drip edge flashings over underlayment and fasten to roof deck.

G. Eave Drip Edges: Install eave drip edge flashings below underlayment and fasten to roof deck.

H. Pipe Flashings: Form flashing around pipe penetrations and wood roofing. Fasten and seal to wood roofing.

3.4 ASPHALT SHINGLE ROOF INSTALLATION

A. Install asphalt roofing according to manufacturer's written instructions, recommendations "Design and Application Manual for New Roof Construction," and recommendations in NRCA's "The NRCA Roofing and Waterproofing Manual."

B. Install drainage mat perpendicular to roof slope in parallel courses, butting edges and ends to form a continuous layer, and fasten to roof deck.

C. Install double-layer asphalt roofing starter course along lowest roof edge. Extend starter course 1-1/2 inches over fascia and 1 inch over rake edge.

1. Offset joints of double-layer starter course a minimum of 1-1/2 inches.

D. Install first course of asphalt shingles directly over starter course and in continuous straight-line courses across roof deck. Install second and succeeding courses of asphalt shingles in continuous straight-line courses across roof deck. Extend 1-1/2 inches over rake edge.

1. Install 18-inch- wide strip of roof felt interlayment over top portion of first and each succeeding course. Set bottom edge of roof felt interlayment at a distance of twice the weather-exposure dimension above the shake butt. Stagger fasten to roof deck with felt underlayment nails.

2. Offset joints between shingles in succeeding courses a minimum of 1-1/2 inches

(38 mm). Limit alignment of vertical joints in every third course to not exceed 10 percent of joints.

3. Fasten each shingle with 2 nails spaced 3/4 to 1 inch from edge of shake and 1-1/2 to 2 inches above butt line of subsequent course. Drive fasteners flush with top surface of shakes without crushing wood.

4. Maintain weather exposure of to match existing shingles.

E. Open Valleys: Cut and fit shingles at open valleys, trimming upper concealed corners of shakes. Maintain uniform width of exposed open valley from highest to lowest point.

F. Ridge Vents: Install continuous ridge vents over wood shakes according to manufacturer's written instructions. Fasten with roofing nails of sufficient length to penetrate sheathing.

G. Ridge Units: Install units over wood shakes trimmed at apex. Maintain same exposure dimension of units as roof shake exposure. Lap units at ridges to shed water away from direction of prevailing winds. Alternate overlaps of units and fasten with concealed roofing nails of sufficient length to penetrate sheathing.

1. Install concealed strip of roof felt underlayment over apex shingles and fasten with felt underlayment nails.

2. Fasten ridge units to cover ridge vent without obstructing airflow.

ROOFING INSTALLER'S WARRANTY

H. WHEREAS___________ of ______________herein called the "Roofing Installer," has performed roofing and associated work ("work") on the following project:

1. Owner:

2. Address:

3. Building Name/Type:

4. Address:

5. Area of Work:

6. Acceptance Date

7. Warranty Period:

8. Expiration Date:

I. AND WHEREAS Roofing Installer has contracted (either directly with Owner or indirectly as a subcontractor) to warrant said work against leaks and faulty or defective materials and workmanship for designated Warranty Period, J. NOW THEREFORE Roofing Installer hereby warrants, subject to terms and conditions herein set forth, that during Warranty Period he will, at his own cost and expense, make or cause to be made such repairs to or replacements of said work as are necessary to correct faulty and defective work and as are necessary to maintain said work in a watertight condition.

K. This Warranty is made subject to the following terms and conditions:

1. Specifically excluded from this Warranty are damages to work and other parts of the building, and to building contents, caused by:

a. lightning;

b. peak gust wind speed exceeding _______________mph ;

c. fire;

d. failure of roofing system substrate, including cracking, settlement, excessive deflection, deterioration, and decomposition;

e. faulty construction of parapet walls, copings, chimneys, skylights, vents, equipment supports, and other edge conditions and penetrations of the work;

f. vapor condensation on bottom of roofing; and

g. activity on roofing by others, including construction contractors, maintenance personnel, other persons, and animals, whether authorized or unauthorized by Owner.

2. When work has been damaged by any of foregoing causes, Warranty shall be null and void until such damage has been repaired by Roofing Installer and until cost and expense thereof have been paid by Owner or by another responsible party so designated.

3. Roofing Installer is responsible for damage to work covered by this Warranty but is not liable for consequential damages to building or building contents resulting from leaks or faults or defects of work.

4. During Warranty Period, if Owner allows alteration of work by anyone other than

Roofing Installer, including cutting, patching, and maintenance in connection with penetrations, attachment of other work, and positioning of anything on roof, this

Warranty shall become null and void on date of said alterations, but only to the extent said alterations affect work covered by this Warranty. If Owner engages

Roofing Installer to perform said alterations, Warranty shall not become null and void unless Roofing Installer, before starting said work, shall have notified Owner in writing, showing reasonable cause for claim, that said alterations would likely damage or deteriorate work, thereby reasonably justifying a limitation or termination of this Warranty.

5. During Warranty Period, if original use of roof is changed, this Warranty shall become null and void on date of said change, but only to the extent said change affects work covered by this Warranty.

6. Owner shall promptly notify Roofing Installer of observed, known, or suspected leaks, defects, or deterioration and shall afford reasonable opportunity for Roofing

Installer to inspect work and to examine evidence of such leaks, defects, or deterioration.

7. This Warranty is recognized to be the only warranty of Roofing Installer on said work and shall not operate to restrict or cut off Owner from other remedies and resources lawfully available to Owner in cases of roofing failure. Specifically, this Warranty shall not operate to relieve Roofing Installer of responsibility for performance of original work according to requirements of the Contract

Documents, regardless of whether Contract was a contract directly with Owner or a subcontract with Owner's General Contractor.

L. IN WITNESS THEREOF, this instrument has been duly executed this _______day of

1. Authorized Signature:

2. Name:

3. Title:

PART 4 - MEASUREMENT AND PAYMENT

4.1 - Method of Measurement

The asphalt shingle roofing system as specified shall be measured as one Lump Sum

Quantity (LSQ).

4.2 - Basis of Payment

Payment will be made at the contract lump sum unit price as listed in the “Contract

Schedule of Items” for quantities measured and accepted as follows:

Pay Item Description Pay Unit

07317 (01) Roof System(Building # 70020/70021 L.S.

07317 (02) Roof System(Building # 70024/70025 L.S.

07317 (03) Roof System(Building # 70022/70023 L.S.

07317 (04) Roof System(Building # 40024 L.S.

END OF SECTION 07317

DIVISION 7 - THERMAL AND MOISTURE PROTECTION

PREFORMED METAL ROOFING - 07410

PART 1 - GENERAL

1.1 - Scope

The extent of preformed metal panels are as shown in the pictures and by provisions of this section. The scope of work includes, but is not limited to preformed panels, related accessories, valleys, hips, ridges, eaves, corners, rakes, miscellaneous flashings and attaching devices.

1.2 - Related Work Specified Elsewhere

05100 – Structural Metal

06100 – Carpentry

1.3 - Submittals

Submit the manufacturer's current specifications and installation recommendations.

Provide samples at the request of the Engineer.

Submit shop drawings showing roof plans, profiles, details of forming, joining trim flashing and accessories. Show details of weatherproofing at edges, terminations and penetrations of metal roofing work.

Submit a twenty (20) year manufacturer's warranty on the paint finish.

Submit a two (5) year applicator's warranty on the weathertightness.

PART 2 - PRODUCTS

2.1 - Metal Roofing System

Acceptable roofing systems shall conform to the following:

(1) A snap lock, standing seam system with a UL 90 rating.

(2) System shall be engineered to withstand 50 psf wind uplift.

(3) Panels shall be 24 gauge.

(4) Panels and accessories shall be prefabricated and seams rolled in the manufacturer's plant.

(5) Color shall be approved by the COR.

2.2 - Substrate

Substrate shall be 3/4" CDX plywood with 30# roofing felt unless otherwise determined in the field. Install plywood good side down in exposed applications.

2.3 - Delivery

Delivery of material shall be made only after suitable facilities for its storage and protection are available on the site.

Upon receipt of preformed metal panels, flat sheets, flashings and panel accessories; installer shall examine each shipment for damage and for completeness of the consignment.

2.4 - Storage

Store materials out of the weather in a clean, dry place. One end of each container should be slightly elevated to allow any moisture to run off.

Panels and/or flashing with strippable film must not be stored in areas exposed to sunlight.

Care should be taken to prevent contact with any substance which may cause a discoloration in the finish during storage.

Store materials to provide ventilation and prevent bending, abrasion, or twisting.

2.5 - Handling

Care should be taken to avoid gouging, scratching or denting.

Do not allow traffic on completed roof. If required, provide cushioned walk boards.

Protect installed products from damage caused by foreign objects and adjacent construction until completion of project.

PART 3 - EXECUTION

3.1 - Installation

Workmanship shall conform to standards set forth in the architectural sheet metal manual as published by SMACNA.

Panels should be installed in such a manner that horizontal lines are true and level and vertical lines are plumb.

All starter and edge flashings shall be installed prior to panels.

Do not allow panels or trim to come into contact with dissimilar materials.

Exposed edges are permissible. However, efforts should be made to reduce the amount of exposed edges.

Screws and nails used in areas where the underlayment will be exposed shall not penetrate the plywood facing.

3.2 - Touch Ups

Only minor scratches and abrasions will be allowed to be touched up. any other damaged material shall be replaced.

3.3 - Clean Up

Remove scrap and debris from surrounding area.

PART 4 - MEASUREMENT AND PAYMENT

4.1 - Method of Measurement

The preformed metal roofing system as specified shall be measured as one Lump

Sum Quantity (LSQ).

4.2 - Basis of Payment

Payment will be made at the contract lump sum unit price as listed in the “Contract

Schedule of Items” for quantities measured and accepted as follows:

Pay Item Description Pay Unit

07410 (01) Roof System(Building # 70020/70021(option) L.S.

07410 (02) Roof System(Building # 70024/70025(option) L.S.

07410 (03) Roof System(Building # 70022/70023(option) L.S.

07410 (04) Roof System(Building # 40024(option) L.S.

07410 (05) Roof System(Building # 40020(option) L.S.

07410 (06) Roof System(Building # 40081 L.S.

END OF SPECIFICATION 07410

DIVISION 7 – THERMAL AND MOISTURE PROTECTION

SINGLE PLY MEMBRANE ROOF SYSTEM - 07530

PART 1 - GENERAL

1.1 - Description

The Contractor shall perform all work required to accomplish the task per the specifications and the manufacturer’s installation instructions.

PART 2 - PRODUCTS

2.1 – Single Ply Membrane Roof System

The roof system shall be a Duro-Last Single Ply Membrane Roofing System as manufactured by Duro-Last Roofing, Inc., or equal. The membrane shall be a polyvinyl chloride polymer blend laminated to a weft-inserted, polyester-base fiber mat or scrim, minimum 40 mil nominal thickness. Color shall be tan. Minimum tear strength shall be

130 x 110 lbs and minimum breaking strength shall be 435 x 350 lbs per ASTM D-751.

The roofing system shall be rated to withstand wind uplift to 150 psf, and listed UL-

1897 and UL 790 Class A roof. The new roofing system shall include all the manufacturer’s compatible accessories including, but not limited to; roof jacks, appliance vent stacks, edge and corner components, drip flashing, term bars, curbs, etc.

Caulking or sealant products, if used around roof penetrations, flashing, or jacks, shall be compatible with the roofing system.

3.1 – Installation

A contractor authorized by the manufacturer shall install the roof system in strict accordance with the manufacturer’s instructions.

The original roof appears to be a rolled bituminous built up type roof, with small roof sections covered by asphalt shingles. The existing roof shall be left in place as the substrate and shall be covered with a compatible underlayment if the installer determines this is necessary for warranted roof system performance.

See the attached photos depicting the roof elevations on the Ranger Station Office.

PART 4 - MEASUREMENT AND PAYMENT

4.1 - Method of Measurement

The single ply membrane roofing system as specified shall be measured as one Lump

Sum Quantity (LSQ).

4.2 - Basis of Payment

Payment will be made at the contract lump sum unit price as listed in the “Contract

Schedule of Items” for quantities measured and accepted as follows:

Pay Item Description Pay Unit

07530 (01) Roof System(Building # 40020) L.S.

END OF SPECIFICATION 07530

SECTION 07620

SHEET METAL FLASHING AND TRIM

PART 1 GENERAL

1.1 WORK INCLUDED

A. Flashings.

B. Facias, gutters and downspouts.

C. Roof flashings.

D. Counterflashings.

E. Roof joint cover flashings.

F. Counterflashings at roof mounted mechanical equipment and vent stacks.

1.2 RELATED WORK

A. Section 07317 – Cedar Shake Roof

Section 07900 - Joint Sealers.

1.3 REFERENCES

A. AISI (American Iron and Steel Institute) - Stainless Steel - Uses in Architecture.

B. ANSI/ASTM B32 - Solder Metal.

C. ASTM A525 - Steel Sheet, Zinc Coated, (Galvanized) by the Hot-Dip Process.

D. ASTM D226 - Asphalt-Saturated Organic Felt Used in Roofing & Waterproofing.

E. FS O-F-506 - Flux, Soldering, Paste and Liquid.

F. FS QQ-S-571 - Solder, Tin Alloy.

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

H. NAAMM - Metal Finishes Handbook.

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

J. SMACNA - Architectural Sheet Metal Manual.

1.4 QUALITY ASSURANCE

A. Applicator: Company specializing in sheet metal flashing work with 5 years minimum experience.

1.5 SUBMITTALS

A Submit shop drawings and product data under provisions of Section 01300.

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

C. Submit manufacturer's installation instructions under provisions of Section 01300.

1.6 STORAGE AND HANDLING

A. Store products under provisions of Section 01600.

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

2.1 SHEET MATERIALS

A. Galvanized Steel: ASTM A525, 24 gauge (0.6 mm) core steel.

B. Pre-finished Copings, Gutters, Downspouts and Flashing for new construction or replacement.

1. Fabricate Gutters from 24ga. roll-formed, galvanized steel pre-finished to match color of existing material for replacement material or at new metal roof construction.

2. Fabricate downspouts from 24ga. roll formed galvanized steel pre-finished to match color of existing material for replacement material or at new metal roof construction. Fabricate gutter straps from 10ga. metal to match.

2.2 ACCESSORIES

A. Fastener: Galvanized steel with soft neoprene washers at exposed fasteners.

B. Underlayment: ASTM D266; 30 lb. asphalt saturated roofing felt.

C. Sealant: Type specified in Section 07900.

D. Solder: FS QQ-S-571; 50/50 type.

E. Flux: FS O-F-506.

2.3 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, minimum 3 inches (75

mm) wide, 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.

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 (450 mm) long legs;

seam for rigidity, seal with sealant.

H. Fabricate vertical faces with bottom edge formed outward 1/4 inch (6 mm) and hemmed to form drip.

PART 3 EXECUTION

3.1 INSPECTION

A. Verify roof openings, curbs, pipes, sleeves, ducts, or vents through roof are solidly set, cant strips and reglets in place, and nailing strips located.

B Verify base flashings are in place, sealed, and secure.

C. Beginning of installation means acceptance of existing conditions.

3.2 PREPARATION

A. Field measure site conditions prior to fabricating work.

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

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

D. Lap and seal all joints.

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

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

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

H. Seal metal joints watertight.

3.3 INSTALLATION

A. Conform to drawing details included in SMACNA manual.

END OF SPECIFICATION 07620

DIVISION 7 - THERMAL AND MOISTURE PROTECTION

CAULKING AND SEALANTS - 07900

PART 1 - GENERAL

1.1 - Scope

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

(1) Sealants

(2) Caulking

1.2 - Related Work Specified Elsewhere

05500 - Metal Fabrications

06100 - Carpentry

07410 - Preformed Metal Roofing

1.3 - Product Handling

Delivery: Deliver sealants and related accessories to the job site in factory sealed, unopened containers bearing manufacturer's name and product designations.

Handling: Follow manufacturer's recommendations for handling products containing toxic materials. Keep flammable material away from heat, sparks, and open flame.

PART 2 - PRODUCTS

2.1 - Materials

General: All sealants, primers, and accessories shall be non-staining to adjacent exposed materials. Use gun consistency compounds unless otherwise required by job conditions. Colors shall be approved by the Engineer.

Silicone Sealant: Use Dow Corning #790 or General Electric "SILPRUF" sealants, or approved equal.

Use General Electric "2400" silglaze or Dow Corning #732 for all other non-concrete sealant, or approved equal.

3.1 - Condition of Surfaces

Inspect all surfaces to receive sealant material. Starting work implies acceptance of surfaces as satisfactory by Engineer.

Verify that joints and spaces to be sealed are of proper width.

Apply no sealant materials in contact with surfaces contaminated with oil, grease, bituminous materials, form release agents, bond breakers, deleterious curing compounds, water repellents, and other special surface treatments.

3.2 - Preparation

Thoroughly clean all joints, removing all foreign matter such as dirt, dust, moisture, frost, rust, mill scale, paint, lacquer, and protective coatings. Blow all joints free of loose particles.

Use no cleaning solvents which leave residue. Wipe joints free of solvent using clean, dry white cloths or white lintless paper. Do not permit solvent to air dry.

Follow manufacturer's directions for products and surfaces.

3.3 - Installation

Unless otherwise required by these specifications, install materials in strict accordance with manufacturer's specifications and recommendations using approved equipment.

3.4 - Patching

Patch or replace defective or damaged sealants as directed by the Engineer. The Contractor shall be responsible for damage to adjacent surfaces caused by sealant operations.

3.5 - Cleaning

Clean adjacent surfaces soiled by sealing operations. Remove wet material before it "sets".

Follow manufacturer's recommendations for cleaning procedures. Cleaning agents shall not stain or be injurious to exposed surfaces nor shall they be potentially dangerous to metal surfaces due to wash-off by rain.

PART 4 - MEASUREMENT AND PAYMENT

4.1 - Measurement

The work specified herein will not be measured for payment.

4.2 - Payment

This work is incidental to other items in this contract and direct separate item payment will not

END OF SPECIFICATION 07900