FS supplemental specifications.docx

FOREST SERVICE SUPPLEMENTAL SPECIFICATIONS

WISDOM RANGER STATION ROOF AND SIDING REPLACEMENT

SECTION 000050 – WISDOM RANGER STATION ROOF AND SIDING REPLACEMENT

1.1 GENERAL

This item shall consist of installing a new roof and siding on the Wisdom Fuel Storage Building and Men’s and Women’s Bunkhouses on the Beaverhead-Deerlodge National Forest, on the Wisdom Ranger District. Work includes but is not limited to removing/replacing roofing, repairing sub roof assemblies, installing weather proofing and water barriers, replacement of facia, installation of wall sheathing, installing metal siding and trim, installing vent pipes and louvres, wall framing and replacing windows. If there are any questions about acceptable materials or techniques to be used, please contact the CO.

Any and all unused excess materials and property paid for will be retained by the Forest Service. Arranging a storage location for excess material will be at the discretion of the Contracting Officer.

The project is located at Wisdom Ranger Station, this site is accessible year around.

The project includes 2 residential houses and one Fuel Storage.

Sub roof assemblies may not require repair and are not guaranteed quantities.

A. Transportation: The Contractor shall provide adequate and safe methods for trucking and transporting equipment and materials onto and off the projects sites. All Local, State, and federal regulations and laws shall be complied with by the Contractor during trucking and transporting operations on Local, County, State, and Forest roads.

B. Clean substrate of any projections and substances detrimental to roofing and siding work.

C. Proceed with installation of underlayment, roofing, and siding materials only when weather conditions are in compliance with manufacturer’s recommendations and when substrate is completely dry.

1.2 DEMOLITION OF EXISTING ROOF AND SIDING

Temporary Protection: Maintain integrity of building enclosures keeping all openings, holes, joints, and gaps sealed to prevent entry from bats or other wildlife. Erect temporary protection, such as walks, fences, railings, and canopies, where required to protect residents of the buildings.

1. Provide protection to ensure safe passage of people around building demolition area to and from occupied portions of adjacent buildings and structures, in accordance with Federal OSHA requirements.

2. Warning Signs and Labels: Provide warning signs at all approaches and doors to the work areas. Locate signs at such a distance that personnel may read the sign and take the necessary protective steps required before entering the area. Warning signs may be in the form of continuous plastic tape. At a minimum signs should read

WARNING

DO NOT ENTER

ROOFING WORK

Alternate wording for the warning signs will be approved by the Contracting Officer.

1.3 DIMENSIONS FIELD VERIFICATION

A. Field verify all dimensions affecting the work of this contract prior to ordering materials.

A. When more than one class, size, type, thickness, etc. is specified in the Schedule of Items for any pay item, suffixes will be added to the item number to differentiate between the pay items.

B. Payment shall be by units defined and determined according to U.S. Standard measure and by the following:

1. Linear Foot (LF): Measurement of work along its length from point-to-point; parallel to the base or foundation. Do not measure overlaps.

2. Lump Sum (LSQ): One complete unit.

3. Square Foot (SF): Measured on a plane parallel to the surface being measured.

C. Method of measurement: One of the following methods of measurement for determining final payment is designated on the Schedule of Items for each pay item:

1. ACTUAL QUANTITIES (AQ) - These quantities are determined from actual measurements of completed work.

2. DESIGNED QUANTITIES (DQ) - These quantities denote the final number or units to be paid for under the terms of the contract. They are based upon the original design data available prior to advertising the project. Original design data include the preliminary survey information, design assumptions, calculations, drawings, and the presentation in the contract. Changes in the number of units shown in the Schedule of Items may be authorized under any of the following conditions:

· As a result of changes in the work authorized by the CO.

· As a result of the CO determining that errors exist in the original design that cause a pay item quantity to change by 15 percent or more.

· As a result of the Contractor submitting to the CO a written request showing evidence of errors in the original design that cause a pay item quantity to change by 15 percent or more. The evidence must be verifiable and consist of calculations, drawings, or other data that show how the designed quantity is believed to be in error.

3. LUMP SUM QUANTITIES (LSQ) - These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job. They shall not be measured.

1.6 All Submittals - It will be the Contractor's responsibility to submit information on all items required with such promptness as to cause no delay in the work. Approvals must be obtained before starting work on parts of the project which involves the submittal. Contractor shall allow 10 calendar days for processing of submittals by the Government.

A. Submit four copies of submittals and shop drawings to the Contracting Officer for approval on the items required herein. Circle or check items to be used on submittals. Highlighter pens may print black over writing or may not show up at all when copied and should not be used. One copy of all submittals and shop drawings will be returned to the contractor. Information must be adequate to determine compliance with specifications.

B. 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 10 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 substitutions will only be considered if contractor submits the following:

1.7 Related Work - The work shall be in accordance with these specifications. The following is a list of the specifications that are included with this package.

SECTION 000050 – WISDOM RANGER STATION ROOF AND SIDING REPLACEMENT

SECTION 001900 – MOBILIZATION

SECTION 024119 – SELECTIVE DEMOLITION

SECTION 074100 – ROOFING AND SIDING PANELS

SECTION 077000 – ROOF AND WALL SPECIALTIES AND ACCESSORIES

SECTION 074113 – ROUGH CARPENTRY

END OF SECTION

USDA FOREST SERVICE, R-1

WISDOM RANGER STATION ROOF AND SIDING REPLACEMENT

1 SECTION 000050

SECTION 019000 - MOBILIZATION

PART I - GENERAL

1.1 Mobilization - This item is intended to compensate the Contractor for operations including, but not limited to, those necessary for the movement of personnel, equipment, supplies, and incidentals to the project site; for payment of premiums for bonds and insurance for the project; and for any other work and operations which must be performed or costs that must be incurred incident to the initiation of meaningful work at the site and for which payment is not otherwise provided for under the contract.

1.2 Method of Measurement - The measurement shall be lump sum for mobilization.

1.3 Basis of Payment - The lump sum price shall include full compensation for mobilization. Progress payments for mobilization will be made as follows:

A. Bond premiums will be reimbursed after receipt of the evidence of payment.

B. 50% of the lump sum, not to exceed 5% of the original contract amount, will be paid following completion of 5% of the original contract amount not including mobilization and bond premiums.

C. Payment of the remaining portion of the lump sum, up to 10% of the original contract amount, will be paid following completion of 10% of the original contract amount not including mobilization and bond premiums.

D. Any portion of the lump sum in excess of 10% of the original contract amount will be paid after final acceptance.

Progress payments for mobilization and preparatory work shall be subject to retainage.

PART II - PRODUCTS (Not Applicable)

PART III - EXECUTION (Not Applicable)

END OF SECTION

USDA FOREST SERVICE, R-1

WISDOM RANGER STATION ROOF AND SIDING REPLACEMENT

1 SECTION 019000

SECTION 024119 - SELECTIVE DEMOLITION

PART 1 - GENERAL

1.1 Items indicated to be removed become Contractor's property. Detach materials designated for removal from existing construction, and dispose of the existing roofing materials and items of off National Forest in accordance with all state and federal laws. The Contractor shall be responsible for all costs, royalties, arrangements, procurement, cleanup, and work associated with a waste disposal area.

1.2 Government will occupy portions of building immediately adjacent to selective demolition area. Conduct selective demolition so Owner's operations will not be disrupted. It is not expected that hazardous materials will be encountered in the work. If hazardous materials are encountered, do not disturb; immediately notify CO in writing. Hazardous materials will be removed by Government under a separate contract action.

1.2 Measurement of Payment - SELECTIVE DEMOLITION, will be paid incidentally to other line items and will include all costs of demolition, collection haul, fees, and waste disposal.

PART 2 PRODUCTS (NOT USED)

PART 3 - PEFORMANCE REQUIREMENTS

A. Regulatory Requirements: Comply with EPA regulations and with hauling and disposal regulations of authorities having jurisdiction.

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

PART 4 - EXECUTION

A. DEMOLITION

Maintain services/systems indicated to remain and protect them against damage during selective demolition operations. Before proceeding with demolition, provide temporary services/systems that bypass area of selective demolition and that maintain continuity of services/systems to other parts of the building.

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

Provide temporary weather protection to prevent water leakage and damage to structure and interior areas.

Neatly cut openings and holes, keeping work square, plumb and true to dimensions required. Use cutting methods least likely to damage existing construction or adjoining construction.

Clean adjacent structures, driveways, walkways, lawns, and improvements of dust, dirt, nails, and debris caused by selective demolition operations. Return adjacent areas to condition existing before selective demolition operations began at the end of each night.

All trash and construction debris resulting from installation, demolition, and construction are the responsibility of the Contractor and shall be removed and disposed of legally. It is the Contractor’s responsibility to locate an acceptable disposal area, and to pay all costs involved in the disposal of materials.

END OF SECTION

1 SECTION 024119

SECTION 061000

ROUGH CARPENTRY

PART 1 - GENERAL

SUMMARY

This Section includes the following:

Wood framing.

Wood supports.

Wood blocking.

Wood cants.

Wood nailers.

Wood furring.

Wood grounds.

Wood sheathing.

Wood subflooring.

Wood underlayment.

Plywood backing panels.

Building wrap.

SUBMITTALS

Product Data: For each type of process and factory-fabricated product indicated.

Include data for wood-preservative and fire-retardant treatment from chemical treatment manufacturer and certification by treating plant that materials comply with requirements.

Research/Evaluation Reports: For the following:

Treated wood.

Engineered wood products.

Foam-plastic sheathing.

Power-driven fasteners.

Powder-actuated fasteners.

Expansion anchors.

Metal framing anchors.

Building wrap.

PART 2 - PRODUCTS

MANUFACTURERS

In other Part 2 articles where subparagraph titles below introduce lists, the following requirements apply for product selection:

Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the work include, but are not limited to, the manufacturers specified.

WOOD PRODUCTS, GENERAL

Lumber: DOC PS 20 and applicable rules of lumber grading agencies certified by the American Lumber Standards Committee Board of Review.

Factory mark each piece of lumber with grade stamp of grading agency.

For exposed lumber indicated to receive stained or natural finish, mark grade stamp on end or back of each piece or omit grade stamp and provide certificates of grade compliance issued by grading agency.

Provide dressed lumber, S4S, unless otherwise indicated.

Provide dry lumber with 15 percent maximum moisture content at time of dressing for 2-inch nominal (38-mm actual) thickness or less, unless otherwise indicated.

Engineered Wood Products: Acceptable to authorities having jurisdiction and for which current model code research or evaluation reports exist that show compliance with building code in effect for Project.

Allowable Design Stresses: Meet or exceed those indicated per manufacturer's published values determined from empirical data or by rational engineering analysis and demonstrated by comprehensive testing performed by a qualified independent testing agency.

Wood Structural Panels:

Plywood: Either DOC PS 1 or DOC PS 2, unless otherwise indicated.

Oriented Strand Board: DOC PS 2.

Comply with "Code Plus" provisions in APA Form No. E30K, "APA Design/Construction Guide: Residential & Commercial."

WOOD-PRESERVATIVE-TREATED MATERIALS

Preservative Treatment by Pressure Process: AWPA C2 (lumber) and AWPA C9 (plywood), except that lumber that is not in contact with the ground and is continuously protected from liquid water may be treated according to AWPA C31 with inorganic boron (SBX).

Wood for Wood Foundation Systems: WPB FDN.

Wood for Ground Contact Use: AWPB LP-22.

Wood for Aboveground Use: AWPB LP-2.

Kiln-dry material after treatment to maximum moisture content of 15 percent for plywood.

Mark each treated item with treatment quality mark of an inspection agency approved by the American Lumber Standards Committee Board of Review.

Application: Treat items indicated on Drawings, and the following:

Wood cants, nailers, curbs, equipment support bases, blocking, stripping, and similar members in connection with roofing, flashing, vapor barriers, and waterproofing.

Wood sills, sleepers, blocking, furring, stripping, and similar concealed members in contact with masonry or concrete.

Wood framing members less than 18 inches (460 mm) above grade.

Wood floor plates that are installed over concrete slabs directly in contact with earth.

FIRE-RETARDANT-TREATED MATERIALS

General: Where fire-retardant-treated materials are indicated, provide materials that comply with performance requirements in AWPA C20 (lumber) and WPA C27 (plywood). Identify fire-retardant-treated wood with appropriate classification marking of UL, U.S. Testing, Timber Products Inspection, or another testing and inspecting agency acceptable to authorities having jurisdiction.

Use treatment for which chemical manufacturer publishes physical properties of treated wood after exposure to elevated temperatures, when tested by a qualified independent testing agency according to ASTM D 5664, for lumber and ASTM D 5516, for plywood.

Use treatment that does not promote corrosion of metal fasteners.

Use Exterior type for exterior locations and where indicated.

Use Interior Type A High Temperature (HT), unless otherwise indicated.

DIMENSION LUMBER

General: Of grades indicated according to the American Lumber Standards Committee National Grading Rule provisions of the grading agency indicated.

Non-Load-Bearing Interior Partitions: Construction, Stud, or No. 2 Standard, Stud, or No. 3 grade and any of the following species:

Northern species; NLGA.

Western woods; WCLIB or WWPA.

Framing Other Than Non-Load-Bearing Partitions: Construction, Stud, or No. 3 grade and any of the following species:

Douglas fir-larch, Douglas fir-larch (north), or Douglas fir-south; NLGA, WCLIB, or WWPA.

Hem-fir or Hem-fir (north); NLGA, WCLIB, or WWPA.

Spruce-pine-fir (south) or Spruce-pine-fir; NELMA, NLGA, WCLIB, or WWPA.

Framing Other Than Non-Load-Bearing Partitions: Any species of machine stress-rated dimension lumber with a grade of not less than 2400f-2.0E.

Exposed Framing: Hand select material for uniformity of appearance and freedom from characteristics that would impair finish appearance.

Species and Grade: Hem-fir or Hem-fir (north), Select Structural grade; NLGA, WCLIB, or WWPA – saw texture.

Species and Grade: Spruce-pine-fir or Spruce-pine-fir (south), No. 1 grade; NELMA, NLGA, WCLIB, or WWPA – saw texture.

Redwood, clear all heart grade per RIS rules.

Cedar, “A” grade, saw texture, per western red cedar rules.

TIMBER AND MISCELLANEOUS LUMBER

For timbers of 5-inch nominal (117-mm actual) size and thicker, provide material complying with the following requirements:

Species and Grade: Douglas fir-larch, Douglas fir-larch (north), or Douglas fir-south; Select Structural No. 1 grade; NLGA< WCLIB< or WWPA.

Provide miscellaneous lumber for support or attachment of other construction, including the following:

Rooftop equipment bases and support curbs.

Blocking.

Cants.

Nailers.

Furring.

Grounds.

For items of dimension lumber size, provide Construction, Stud, or No. 2-grade lumber with 19 percent maximum moisture content of any species.

For concealed boards, provide lumber with 19 percent maximum moisture content and any of the following species and grades:

Northern species, No. 3 Common grade; NLGA.

Western woods, Standard or No. 3 Common grade; WCLIB or WWPA.

ENGINEERED WOOD PRODUCTS

Laminated-Veneer Lumber (LVL): Prefabricated wood beams and headers composite of wood veneers with grain primarily parallel to member lengths, manufactured with exterior-type adhesive complying with ASTM D 2559. Allowable design values determined according to ASTM D 5456.

Extreme Fiber Stress in Bending, Edgewise: 2500 psi (17.2 MPa) for 12-inch nominal- (286-mm actual-) depth members.

Modulus of Elasticity, Edgewise: 2,000,000 psi (13 800 MPa).

Wood I-Joists: Prefabricated units complying with APA PRI-400; depths and performance ratings not less than those indicated.

Web Material: Either oriented strand board or plywood, Exposure 1.

Structural Capacities: Establish and monitor structural capacities according to ASTM D 5055.

Trademark: Factory mark I-joists with APA trademark indicating nominal joist depth, joist class, span ratings, mill identification, and I-joist compliance with APA standard.

Rim Boards: Performance-rated product complying with APA PRR-401.

Material: structural composite lumber.

Thickness and Grade: 1-1/8-inch (28-mm) rim board.

Trademark: Factory mark with APA trademark indicating thickness, grade, and compliance with APA standard.

SHEATHING

Span Rating: As required to suit stud spacing indicates.

Span Rating: 12/0, 16/0, 20/0 or Wall-16 oz. For stud spacing of 16” or less, 3/8” thick.

Span Rating: 24/0, 24/16, 32/16,for stud spacing of 24” or less, 15/32” or 7/16” or ½” thick.

Oriented-Strand-Board Wall Sheathing: Exposure 1 sheathing.

Fiberboard Wall Sheathing: AHA A194.1, Type IV, Class 1 (regular density) cellulosic fiberboard sheathing with square edges, 1/2 inch (13 mm) thick.

Paper-Surfaced Gypsum Wall Sheathing: ASTM C 79/C 79M, with water-resistant material incorporated into core and with water-repellent paper bonded to core's face, back, and long edges.

Type and Thickness: Regular, 1/2 inch (13 mm) thick.

Edge and End Configuration: Square.

Extruded-Polystyrene-Foam Wall Sheathing: ASTM C 578, Type IV, in manufacturer's standard lengths and widths with tongue-and-groove or shiplap long edges as standard with manufacturer.

Thickness: ¾”

1. Thickness: 1” Available Manufacturers:

DiversiFoam Products.

Dow Chemical Company (The).

Owens Corning.

Tenneco Building Products.

Polyisocyanurate-Foam Wall Sheathing: Aluminum-foil-faced, glass-fiber-reinforced, rigid, cellular, polyisocyanurate thermal insulation complying with ASTM C 1289, Type I, Class 2. Foam-plastic core and facings shall have a flame-spread index of 25 or less when tested individually.

1. SPEC WRITER: RETAIN ONE BELOW, DELETE OTHERS.

Thickness: ¾” Thickness: 1” Available Manufacturers:

Plywood Roof Sheathing: [Exterior, Structural I] [Exterior] [Exposure 1, Structural I] [Exposure 1] sheathing.

Span Rating: 12/0, 5/16” thick.

Span Rating: 24/0, ½” thick.

Span Rating 24/16, ½” thick.

Span Rating 32/16, ½” or 5/8” thick.

Span Rating 48/24, ¾” or 7/8” or 23/32” thick.

Oriented-Strand-Board Roof Sheathing: Exposure 1 sheathing.

MISCELLANEOUS MATERIALS

Fasteners:

Where rough carpentry is exposed to weather, in ground contact, or in area of high relative humidity, provide fasteners with hot-dip zinc coating complying with ASTM A 153/A 153M.

Power-Driven Fasteners: CABO NER-272.

Bolts: Steel bolts complying with ASTM A 307, Grade A (ASTM F 568M, Property Class 4.6); with ASTM A 563 (ASTM A 563M) hex nuts and, where indicated, flat washers.

Metal Framing Anchors: Made from hot-dip, zinc-coated steel sheet complying with ASTM A 653/A 653M, G60 (Z180) coating designation.

Research/Evaluation Reports: Provide products acceptable to authorities having jurisdiction and for which model code research/evaluation reports exist that show compliance of metal framing anchors, for application indicated, with building code in effect for Project.

Allowable Design Loads: Meet or exceed those indicated per manufacturer's published values determined from empirical data or by rational engineering analysis and demonstrated by comprehensive testing performed by a qualified independent testing agency.

Building Paper: Asphalt-saturated organic felt complying with ASTM D 226, Type I (No. 15 asphalt felt), unperforated.

Building Wrap: Air-retarder sheeting made from polyolefins; cross-laminated films, woven strands, or spun-bonded fibers; coated or uncoated; with or without perforations; and complying with ASTM E 1677, Type I.

Thickness: Not less than 3 mils (0.08 mm).

Permeance: Not less than 10 perms (575 ng/Pa x s x sq. m).

Flame-Spread Index: 25 or less per ASTM E 84.

Allowable Exposure Time: Not less than three months.

Building Wrap Tape: Pressure-sensitive plastic tape recommended by building wrap manufacturer for sealing joints and penetrations in building wrap.

Sheathing Tape: Pressure-sensitive plastic tape for sealing joints and penetrations in sheathing and recommended by sheathing manufacturer for use with type of sheathing required.

Sill-Sealer Gaskets: Glass-fiber-resilient insulation, fabricated in strip form, for use as a sill sealer; 1-inch (25-mm) nominal thickness, compressible to 1/32 inch (0.8 mm); selected from manufacturer's standard widths to suit width of sill members indicated.

Adhesives for Field Gluing Panels to Framing: Formulation complying with ASTM D 3498 that is approved for use with type of construction panel indicated by both adhesive and panel manufacturers.

PART 3 - EXECUTION

INSTALLATION

Set rough carpentry to required levels and lines, with members plumb, true to line, cut, and fitted. Fit rough carpentry to other construction; scribe and cope as needed for accurate fit. Locate furring, nailers, blocking, grounds and similar supports to comply with requirements for attaching other construction.

Apply field treatment complying with AWPA M4 to cut surfaces of preservative-treated lumber and plywood.

Securely attach rough carpentry work to substrate by anchoring and fastening as indicated, complying with the following:

CABO NER-272 for power-driven fasteners.

Published requirements of metal framing anchor manufacturer.

Table 23-II-B-1, "Nailing Schedule," and Table 23-II-B-2, "Wood Structural Panel Roof Sheathing Nailing Schedule," in the Uniform Building Code.

Table 2306.1, "Fastening Schedule," in the Standard Building Code.

Table 602.3(1), "Fastener Schedule for Structural Members," and Table 602.3(2), "Alternate Attachments," in the International One- and Two-Family Dwelling Code.

Use finishing nails for exposed work, unless otherwise indicated. Countersink nail heads and fill holes with wood filler.

Framing Standard: Comply with AFPA's "Manual for Wood Frame Construction," unless otherwise indicated.

Framing with Engineered Wood Products: Install engineered wood products to comply with manufacturer's written instructions.

Comply with applicable recommendations contained in APA Form No. E30K, "APA Design/Construction Guide: Residential & Commercial," for types of structural-use panels and applications indicated.

Comply with "Code Plus" provisions in above-referenced guide.

Fastening Methods:

Combination Subfloor-Underlayment: Glue and nail to wood framing.

Subflooring: Glue and nail to wood framing.

Sheathing: Nail to wood framing.

Underlayment: Nail to subflooring.

Plywood Backing Panels: Nail or screw to supports.

Apply building paper horizontally with 2-inch (50-mm) overlap and 6-inch (150-mm) end lap; fasten to sheathing with galvanized staples or roofing nails. Cover upstanding flashing with 4-inch (102-mm) overlap.

Building Wrap Application: Cover wall sheathing with building wrap as indicated. Cover upstanding flashing with 4-inch (102-mm) overlap. Seal seams, edges, and penetrations with tape.

Apply sheathing tape to joints between sheathing panels and at items penetrating sheathing. Apply at upstanding flashing to overlap both flashing and sheathing.

1. END OF SECTION 061000

1 SECTION 061000

SECTION 062000 - FINISH CARPENTRY, WINDOW FRAME-IN

1. GENERAL

SUMMARY:

General Description:

18 window openings have been identified for replacement. If needed, the Contractor shall re-frame each of these window closures to provide a finished weather-resistant installation.

ACTION SUBMITTALS:

NA

PRODUCTS

MATERIALS, GENERAL

Water-Resistive Barrier: Shall comply with one of the following No. 15 felt complying with ASTM D226, Type 1.

ASTM 2556, Type 1 or 2.

ASTM E331

Other approved materials in accordance with the manufacture’s installation instructions.

Metal Siding:

Install new metal siding over upper window opening to match texture and color of existing metal siding system.

All flashing and finishes required to complete a water-resistive wall assembly is incidental to this work.

Gypsum Board:

Gypsum board and gypsum panel product materials and accessories shall conform to ASTM C22, C475, C514, C1002, C1047, C1177, C1178, C1278, C1396, C1658 or C1766 and shall be installed in accordance with manufacturer's installation instructions.

Insulation (closed cell):

R5 or greater per inch Foam insulation shall provide an exterior air barrier.

Junctions of rim board to sill plate and the rim board to the subfloor shall be air sealed.

Plywood:

Minimum Thickness: 3/8” Exposure Durability: Exposure 1 Span Rating: 24/0 Fiber Cement Panel Siding:

Thickness: 0.312 in minimum.

Profile: Panel Features: UV Protected, Water Resistant Finish: Painted (color to be approved by the COR).

Wood-Preservative-Treated Materials:

Water-Repellent Preservative Treatment by Nonpressure Process: AWPA N1; dip, spray, flood, or vacuum-pressure treatment Preservative Treatment by Pressure Process: AWPA U1; Use Category UC3a or UC3b.

MISCELLANEOUS MATERIALS

Fasteners for Exterior Finish Carpentry: Provide nails or screws, in sufficient length to penetrate not less than 1-1/2 inches (38 mm) into wood substrate.

For face-fastening siding, provide ringed-shank siding nails or hot-dip galvanized-steel siding nail unless otherwise indicated.

For prefinished items, provide matching prefinished aluminum fasteners where face fastening is required.

For pressure-preservative-treated wood, provide stainless steel or hot-dip galvanized-steel fasteners.

For applications not otherwise indicated, provide stainless steel or hot-dip galvanized-steel or aluminum fasteners.

Flashing: Comply with requirements in Section 077000 " Roof and Wall Specialties and Accessories" for flashing materials installed in exterior finish carpentry.

Horizontal Joint Flashing for Panel Siding: Preformed, galvanized-steel, aluminum, prefinished-aluminum or stainless steel, Z-shaped flashing.

Sealants: Latex, complying with ASTM C834 Type OP, Grade NF and applicable requirements, and recommended by sealant and substrate manufacturers for intended application.

EXECUTION

EXAMINATION

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

Examine finish carpentry materials before installation. Reject materials that are wet, moisture damaged, and mold damaged.

Proceed with installation only after unsatisfactory conditions have been corrected.

PREPARATION

Clean substrates of projections and substances detrimental to application.

Prime lumber and moldings to be painted, including both faces and edges, unless factory primed.

Cut to required lengths and prime ends.

INSTALLATION, GENERAL

Do not use materials that are unsound, warped, improperly treated or finished, inadequately seasoned, or too small to fabricate with proper jointing arrangements.

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

Install exterior finish carpentry level, plumb, true, and aligned with adjacent materials.

Use concealed shims where necessary for alignment.

Scribe and cut exterior finish carpentry to fit adjoining work.

Refinish and seal cuts as recommended by manufacturer.

INSTALLATION OF STANDING AND RUNNING TRIM

Install trim with minimum number of joints as is practical, using full-length pieces from maximum lengths of lumber available. Do not use pieces less than 24 inches (610 mm) long, except where necessary.

Use scarf joints for end-to-end joints.

Stagger end joints in adjacent and related members.

Fit exterior joints to exclude water.

Cope at returns and miter at corners to produce tight-fitting joints, with full-surface contact throughout length of joint.

Plane backs of casings to provide uniform thickness across joints, where necessary for alignment.

Where face fastening is unavoidable, countersink fasteners, fill surface flush, and sand unless otherwise indicated.

INSTALLATION OF SIDING

Panel Siding:

Install panels with edges over framing or blocking.

Nail at 6 inches (150 mm) o.c. at panel perimeter and 12 inches (300 mm) o.c. at intermediate supports unless manufacturer recommends closer spacing.

Leave 1/16-inch (1.5-mm) gap between adjacent panels and 1/8-inch (3-mm) gap at perimeter, openings, and horizontal joints unless otherwise recommended by panel manufacturer.

Seal butt joints at inside and outside corners and at trim locations.

Install continuous metal flashing at horizontal panel joints.

Apply battens and corner trim as indicated. Countersink nail heads, fill flush, and sand filler.

Do not nail through overlapping pieces.

Finish: Apply finish within two weeks of installation.

END OF SECTION 062000

1 SECTION 062000

SECTION 074100 PREFORMED ROOF AND SIDING

PART I - GENERAL

1.1 DESCRIPTION OF WORK: This specification covers the furnishing and installation of preformed roofing and siding panels. It is the Contractors responsibility to verify all field dimensions. Products shall match existing materials and/or shall be as directed by the Contracting Officer. Installation procedures shall be in accordance with the product manufacturer's recommendations. Demolition and removal of materials shall be as required to support the work.

1.2 Wind Uplift Resistance: Roofing system to comply with U.L.90 requirements.

1.3 Submittals: Provide complete product submittal with shop drawings.

1.4 Roof system shall have a minimum of a 10 year labor and material warranty.

2.0 PRODUCTS:

2.1 Aluminum Roof Panels: Fabricated from roll-form panels of aluminum allow in accordance with ASTM B 209, tempered as required for forming operation. Thickness of panels shall be the standard thickness as required for roofing span and design loading.

2.1.1 Color-Coated Finish. One of the following standard factory-applied, baked-on coatings:

2.1.1.1 Acrylic Enamel Coating: Epoxy primer and acrylic enamel top coat, dry film thickness not less than 0.2 mil for primer and 0.8 mil for topcoat.

2.1.1.2 Fluoropolymer Coating: Full strength 70 percent polyvinylidene fluoride finish, dry film thickness not less than 1.0 mil over a minimum 0.2-mil baked-on modified epoxy primer.

2.1.1.3 Siliconized Polyester Coating: Epoxy primer and silicone-modified polyester enamel topcoat, dry film thickness not less than 0.2 mil for primer and 0.8 mil for topcoat.

2.1.2 Factory Prime Coating: Factory-applied baked-on epoxy primer coat, not less than 0.2 mil dry film thickness applied after pretreatment.

2.1.3 Natural Finish: Stucco embossed finish, plain mill-finished or special alloy-clad sheet (Alclad), as required.

2.1.4 Corrugated Panels shall be sized to match existing or as otherwise specified with either interlocking ribs or overlapping side laps at side joints, as required.

2.1.5 V-Beam Panels shall be standard V-shaped ribbed panels, sized to match existing or as otherwise specified with either interlocking ribs or overlapping side laps at side joints, as required.

2.2 Steel Roof Panels shall be factory-painted steel metal panels which shall be zinc-coated steel conforming to ASTM A 446, Grade A, G90 zinc coating designation. Roof covering shall be sized to match existing or as required for roofing span and design loading. Steel roof panels shall be factory prime-coated and color-coated with one of the color coatings specified for aluminum roof panels.

2.2.1 Corrugated Panels shall have similar dimensional and side joint characteristics as specified for aluminum roof panels.

2.2.2 Box Rib Panels shall be standard prefinished units sized to match existing or as otherwise specified.

2.3 Standing Seam Roofing:

2.3.1 General: Roof-covering panels shall be fabricated of zinc-coated steel conforming to ASTM A 446, G90 coating designation or aluminum-coated steel. Panels shall be supplied in 24 gauge. Roof covering shall be sized as required for span and loading. Panels shall have configurations designed for mechanically formed lock seams for securing adjacent sheets. Sealant for standing seams shall be factory-applied. Width of sheets shall provide not less than 12 inches of coverage in place. Height of standing seam shall be not less than 2-1/2 inches for slopes less than 3 inches in 12 inches, and not less than 1-3/4 inches for slopes 3 inches in 12 inches or greater.

2.3.2 Color Coating: Color finish shall consist of either a synthetic resin base coating applied to a pretreated and primed surface or a dry film coating material bonded to the metal substrate with adhesive. Dry film thickness of color coat shall be not less than 0.8 mil for exterior surface finish.

2.3.3 Accessories shall include flashing, trim, caps, and similar accessories of not less than the minimum thicknesses specified for roofing. Accessories of zinc-coated steel used with aluminum-coated steel shall be painted. Molded closure strips shall be closed-cell or solid-cell synthetic rubber, neoprene, or polyvinyl chloride premolded to match configuration of the covering.

2.3.4 Panel Clips shall be of two-piece construction with movable tabs.

Clips shall provide for at least 2 inches of panel movement. Tabs shall be designed to be folded into the lock seam.

2.3.5 Fasteners shall be zinc-coated steel or corrosion-resisting steel.

2.3.5.1 Screws shall be not less than No. 14 diameter if self-tapping type and not less than No. 12 diameter if self-drilling and self-tapping type.

2.3.5.2 Blind Rivets shall be stainless steel.

2.3.5.3 Bolts shall be not less than 1/4-inch diameter, shouldered or plain shank, as required, with proper nuts.

2.4 Aluminized Steel Roof Panels

2.4.1 General: Roof panels shall be formed of Type II aluminized sheet in accordance with ASTM A 463 and Mil. Spec. MIL-S-4174. Thickness shall be as required for span and loading.

2.4.2 Aluminized steel corrugated panels shall be similar to standard profiles and dimensional and side joint characteristics as specified for aluminum roof panels and steel roof panels.

2.5 Steel Siding Panels:

2.5.1 General: Steel siding panels shall be government Furnished.

3.0 EXECUTION

3.1 General: Installation shall include all standard fasteners, flashings, sealants, gaskets, closure strips, trim, and insulation associated with roofing and siding. Provide expansion joints where required.

3.2 Field-Assembled Sandwich Panel Siding shall include installation of subgirts. All panels shall be erected with flutes and ribs running vertically.

3.3 Factory-Assembled Sandwich Panels shall be erected by means of standard concealed clip attachments.

END OF SECTION 074100

SECTION 074100

SECTION 077000

ROOF AND WALL SPECIALTIES AND ACCESSORIES

PART 1 - GENERAL

SUMMARY

This Section includes the following:

Roof curbs.

Equipment supports.

Relief vents.

Ridge vents.

Snow guards.

Drip Edge.

Flashing Roof vents Maintenance & Repainting

SUBMITTALS

Product Data: For each product indicated.

Coordination Drawings: Roof plans are drawn approximately to scale and coordinating penetrations and roof-mounted items are indicated. Contractor shall field verify dimensions and Penetrations sizes and locations.

Samples and Colors: for each exposed finish

QUALITY ASSURANCE

Standards: Comply with the following:

SMACNA's "Architectural Sheet Metal Manual" details for fabrication of units, including flanges and cap flashing to coordinate with type of roofing indicated.

NRCA's "Roofing and Waterproofing Manual" details for installing units.

PART 2 - PRODUCTS

MATERIALS

Aluminum:

Sheet: ASTM B 209 (ASTM B 209M) for alclad alloy 3005H25 or alloy and temper required to suit forming operations, with mill finish, unless otherwise indicated.

Extrusions: ASTM B 221 (ASTM B 221M) alloy 6063-T52 or alloy and temper required to suit structural and finish requirements, with mill finish, unless otherwise indicated.

Galvanized Steel Sheet: ASTM A 653/A 653M with G90 (Z275); commercial steel, unless otherwise indicated.

Aluminum-Zinc Alloy-Coated Steel Sheet: ASTM A 792/A 792M with Class AZ-50 (AZ-150) coating, structural quality, Grade 40 (Grade 275), or as required for strength.

Wood Nailers: Softwood lumber, pressure treated with waterborne preservatives for aboveground use, complying with AWPA C2; not less than 1-1/2 inches (38 mm) thick.

Fasteners: Same metal as metals being fastened, or nonmagnetic stainless steel or other noncorrosive metal as recommended by manufacturer. Match finish of exposed fasteners with finish of material being fastened.

Gaskets & Closure systems: Manufacturer's standard tubular or fingered design of neoprene, EPDM, Polyethylene, or PVC; or flat design of foam rubber, sponge neoprene, or cork. UV resistant product.

Bituminous Coating: SSPC-Paint 12, solvent-type bituminous mastic, nominally free of sulfur and containing no asbestos fibers, compounded for 15-mil (0.4-mm) dry film thickness per coating.

Mastic Sealant: Polyisobutylene; nonhardening, nonskinning, nondrying, nonmigrating sealant.

Elastomeric Sealant: Recommended by unit manufacturer that is compatible with joint surfaces; ASTM C 920, Type S, Grade NS, Class 25.

Roofing Cement: ASTM D 4586, nonasbestos, fibrated asphalt cement designed for trowel application or other adhesive compatible with roofing system.

Steel Ridge Caps: Provide required splice plates and end caps.

Color: Submit Color to CO for approval.

RIDGE VENTS

Ridge cap vents must be compatible with specified roofing panels.

General: Ventilating ridge cap must provide minimum net free area of 18 sq. in./ft. (380 sq. cm/m) and prevent animal infiltration.

UNDERLAYMENT MATERIALS

Felts: ASTM D 226, Type II, asphalt-saturated organic felts, nonperforated.

Self-Adhering Sheet Underlayment, Polyethylene Faced: ICC ESR-5149, minimum of 25-mil- (0.64- mm-) thick, slip-resisting, tensile strength 250 psi, ~0.14 lb/sf, polyethylene-film-reinforced top surface laminated to SBS-modified asphalt adhesive, with release paper backing; cold applied.

High-Performance Organic Coating Finish: Fluoropolymer three-coat system with topcoats containing not less than 70 percent polyvinylidene fluoride resin by weight; complying with ASCA 96 or AAMA 620.

Color and Gloss: As selected by CO from manufacturer's full range.

Zinc Roof Strip: minimum 2.5 inch wide roof strips to prevent moss and mildew growth. Attach with rubber gasket roofing nails.

METAL FLASHING AND TRIM

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.

Apron Flashings: Fabricate with lower flange a minimum of 5 inches (125 mm) over and 4 inches (100 mm) beyond each side of downslope asphalt shingles and 6 inches (150 mm) up the vertical surface.

Step Flashings: Fabricate with a headlap of 2 inches (50 mm) and a minimum extension of 5 inches (125 mm) over the underlying asphalt shingle and up the vertical surface. Or as recommended by roofing manufacturer instructions.

Drip Edges: Fabricate in lengths not exceeding 10 feet (3m) with 2-inch (50 mm) roof deck flange and 1-1/2 inch (38 mm) fascia flange with 1/2 inch (9.6 mm) drip at lower edge.

Vent Pipe Flashing: ASTM B 749, Type L51121, at least 1/16 inch (1.6 mm) thick. Provide lead sleeve size to slip over and turn down into pipe, soldered to skirt at slope of roof and extending at least 4 inches (100 m) from pipe onto roof.

Available Manufacturing Requirements: American made product. Subject to compliance with roofing manufacturing requirements.

ROOF CURBS AND EQUIPMENT SUPPORTS

General: Units capable of supporting superimposed live and dead loads, including equipment loads and other construction to be supported. Coordinate dimensions with equipment to be supported.

Provide preservative-treated wood nailers at tops of units and formed flange at perimeter bottom for mounting to roof.

On ribbed or fluted metal roofs, form flange at perimeter bottom to conform to roof profile.

Fabricate units to minimum height of 8 inches (200 mm), unless otherwise indicated.

Where slope of roof deck exceeds 1/4 inch per foot (1:48), fabricate support units with height tapered to match slope to level tops of units.

ROOF CURBS:

Fabrication: Unless otherwise indicated or required for strength, fabricate units from minimum 0.0747-inch- (1.9-mm-) thick, structural-quality, hot-dip galvanized or aluminum-zinc alloy-coated steel sheet; factory primed and prepared for painting with welded or sealed mechanical corner joints.

Fabrication: Unless otherwise indicated or required for strength, fabricate units from minimum 0.063-inch- (1.6-mm-) thick, sheet aluminum with welded corner joints.

Insulation: Manufacturer's standard rigid or semirigid insulation where indicated.

Cants: Formed cants and base profile coordinated with roof insulation thickness.

Equipment Supports: Capable of supporting superimposed live and dead loads, including equipment loads and other construction to be supported. Coordinate dimensions with equipment to be supported.

Fabrication: Unless otherwise indicated or required for strength, fabricate units from minimum 0.0747-inch- (1.9-mm-) thick, structural-quality, hot-dip galvanized or aluminum-zinc alloy-coated steel sheet; factory primed and prepared for painting with welded or sealed mechanical corner joints.

Fabrication: Unless otherwise indicated or required for strength, fabricate units from minimum 0.063-inch- (1.6-mm-) thick, sheet aluminum with welded corner joints.

RELIEF VENTS

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

Aura Ventilation, Inc.

Bristolite Skylights.

Commodity Products Company, Inc.

Dowco Products Group.

Dur-Red Products, Inc.

Goeller Enterprises.

Metallic Products Corporation.

Solar Group (The).

ThyCurb, Inc.

Trimco, Inc.

Vent Products Co., Inc.

Western Canwell.

Low-Profile Gravity Ventilators: Of sizes, style, and profile indicated.

Material: [Galvanized steel] [Aluminum] sheet.

Prime-Painted Finish: Manufacturer's standard exterior galvanized steel primer specified in Division 9 Section "Painting."

Baked-Enamel Finish: Manufacturer's standard two-coat thermocured system.

Color and Gloss: As selected by Contracting Officer (CO) from manufacturer's full range.

High-Performance Organic Coating Finish: Fluoropolymer three-coat system with topcoats containing not less than 70 percent polyvinylidene fluoride resin by weight; complying with AAMA 621 for galvanized steel or ASCA 96 or AAMA 620 for aluminum.

Color and Gloss: As selected by CO from manufacturer's full range.

Clear Anodic Finish: Class I coating complying with AAMA 607.1.

Color Anodic Finish: Class I coating complying with AAMA 606.1 or AAMA 608.1.

Color: As selected by CO from full range of industry colors and densities.

Bird Screens: 1/2-inch- (13-mm-) square mesh with 0.062-inch- (1.6-mm-) diameter, stainless-steel wire.

Insect Screens: 14-by-18 (1.5-by-1.1-mm) mesh with 0.0123-inch- (0.3-mm-) diameter, anodized aluminum wire in removable, rewirable frames.

Manual Dampers: Designed for operation from floor directly below ventilator unit.

Roof Curb Construction: Curb-mount units designed for installing 1-1/2-inch- (38-mm-) thick wood curbs.

Roof Curb Construction: Self-flashing units with integral self-supporting double-wall aluminum curb, enclosing minimum 1-inch- (25-mm-) thick, glass-fiber board insulation (or equivalent), and with minimum 3-inch (75-mm) roof flanges.

ROOF HATCHES

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

Babcock-Davis Hatchways, Inc.

Bilco Company.

Bristolite Skylights.

Custom Curb, Inc.

Dur-Red Products, Inc.

Goeller Enterprises.

Hi Pro International, Inc.

J. L. Industries, Inc.

Metallic Products Corporation.

Milcor, Inc.

Nystrom Products Co.

O'Keeffe's Inc.

Precision Stair Corporation.

Roof Products & Systems Corp.

ThyCurb, Inc.

Trimco, Inc.

Wasco Products, Inc.

General: Frame with minimum 9-inch- (225-mm-) high, integral-curb, double-wall construction with 1-1/2-inch (38- mm) insulation, formed cants and cap flashing (roofing counterflashing), with welded or sealed mechanical corner joints. Provide double-wall cover (lid) construction with 1- inch- (25-mm-) thick insulation core. Provide gasketing and equip with corrosion-resistant or hot-dip galvanized hardware including pintle hinges, hold-open devices, interior padlock hasps, and both interior and exterior latch handles.

Fabricate units to withstand 40-lbf/sq. ft. (1.9-kPa) external and 20-lbf/sq. ft. (0.95-kPa) internal loading pressure.

Sloping Roofs: Where slope or roof deck exceeds 1/4 inch per foot (1:48), fabricate hatch curbs with height tapered to match slope to level tops of units.

ROOF WALKWAYS

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

GS Metals Corp.

Unistrut Corporation.

Metal-Grating Type: Formed-metal plank gratings of C-shaped channels rolled from heavy sheet metal and punched in serrated diamond shape to produce raised slip-resistant surface and drainage holes. Provide support framing, brackets, connectors, nosings, and other accessories and components needed for complete installation. Include step units for changes in elevation.

Material: 0.07-inch (1.8-mm), structural-quality, galvanized steel sheet.

For Flat Roofs: Provide resilient, hard rubber pads under each support unit to isolate supports from and protect roof membrane.

For Sloped Roofs:…