1256A118Q0007_Specifications.docx

DOCX document 22 KB Posted Jul 18, 2018

Attached to: Timber Frame Park Shelter Construction on the Monongahela NF
Solicitation number: 1256A118Q0007
Issued by: Department of Agriculture Forest Service R9-Eastern Region

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Specifications

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File	Type	Posted
1256A118Q0007Amendment_1.pdf	PDF	Aug 2, 2018
Prebid_mtg_20180730.pdf	PDF	Aug 2, 2018
1256A118Q0007_Solicitation.pdf	PDF	Jul 18, 2018
1256A118Q0007_Drawings.pdf	PDF	Jul 18, 2018
1256A118Q0007_Wage_Determination.pdf	PDF	Jul 18, 2018

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SECTION 011000 - SUMMARY

PART 1 - GENERAL

1.1	PROJECT INFORMATION
A.	Project Identification: Cranberry Mountain Nature Center Shelter.
1.	Project Location: Cranberry Mountain Nature Center, 7825 Stamping Creek Rd., Hillsboro, WV 24946.
B.	Owner: USDA Forest Service.
C.	The Work consists of furnishing all materials, labor, supplies and equipment to construct a gable roofed, 24’ x 44’ heavy timber frame park shelter including concrete post piers, gravel pad, heavy timber frame, solid wood roof deck and asphalt shingle roof.
1.2	WORK RESTRICTIONS
A.	Contractor's Use of Premises: During construction, Contractor will have full use of area indicated. Contractor's use of premises is limited only by Owner's right to perform work or employ other contractors on portions of Project and as follows:
1.	Driveways, Walkways, and Entrances: Keep driveways, parking and entrances serving premises clear and available to Owner, Owner's employees, and emergency vehicles at all times. Do not use these areas for parking or storage of materials.
B.	On-Site Work Hours: Limit work on site to hours of 7:00 a.m. to 6:00 p.m., Monday through Friday, except for holidays, unless otherwise approved of in advance.
C.	Nonsmoking Building: Smoking is not permitted within the Cranberry Mountain Nature Center building or within 25 feet of entrances, operable windows, or outdoor-air intakes.
D.	Contractor shall have access to restrooms and potable water in the building during normal business hours and when Forest Service personnel are on site. Hose bibs and electrical outlets are located on the exterior of the building.
E.	Cell phone service is not available at the site. There is limited WIFI available in the building.
F.	On site work shall commence after October 1, 2018 and be finished before May 24, 2019.

PART 2 - PRODUCTS (Not Used) PART 3 - EXECUTION (Not Used)

END OF SECTION 011000

SECTION 012000 - PRICE AND PAYMENT PROCEDURES

PART 1 - GENERAL

1.1	ALLOWANCES
A.	Unless otherwise indicated, Contractor's costs for receiving and handling at Project site, labor, installation, overhead and profit, and similar costs related to products and materials under allowance shall be included as part of the Contract Sum and not part of the allowance.
1.2	UNIT PRICES
A.	Unit prices include all necessary material, plus cost for delivery, installation, insurance, applicable taxes, overhead, and profit.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION

3.1	SCHEDULE OF UNIT PRICES
A.	Mobilization: Mobilization includes transport and set up of equipment, personnel and storage to the site only.
B.	Heavy Timber Frame Shelter: Furnish and install a heavy frame shelter as shown on Drawings and specified in Section 132001 "Heavy Timber Frame Park Shelter," including concealed post bases, steel angles, steel truss plates and tongue and groove roof decking.
C.	Asphalt Shingle Roof: Asphalt shingle roof including underlayment, constructed as indicated and specified in Section 073113 "Asphalt Shingles."
D.	Gravel Pad: Furnish and construct compacted crusher run gravel pad as shown on Drawings.
E.	Concrete Post Piers: Furnish and construct concrete post piers as shown on Drawings and specified in Section 033000 "Cast-In-Place Concrete," including excavation, formwork and reinforcement.

END OF SECTION 012000

SECTION 015000 - TEMPORARY FACILITIES AND CONTROLS

1.1	SECTION REQUIREMENTS
A.	Water and Electric Power: Available from Owner's existing system without metering and without payment of use charges. Provide connections and extensions of services as required for construction operations.

PART 2 - PRODUCTS

2.1	TEMPORARY UTILITY INSTALLATION
A.	Sanitary Facilities:
1.	Toilets: Use of Owner's existing toilet facilities will be permitted, as long as facilities are cleaned and maintained in a condition acceptable to Owner. At Substantial Completion, restore these facilities to condition existing before initial use.
2.2	SUPPORT FACILITIES INSTALLATION
A.	Waste Disposal Facilities: Provide waste-collection containers in sizes adequate to handle waste from construction operations. Comply with requirements of authorities having jurisdiction.
2.3	SECURITY AND PROTECTION FACILITIES INSTALLATION
A.	Barricades, Warning Signs: Comply with requirements of authorities having jurisdiction for erecting structurally adequate barricades, including warning signs.
2.4	MOISTURE AND MOLD CONTROL
A.	Protect materials from water damage and keep porous and organic materials from coming into prolonged contact with concrete.
1.	Protect stored and installed material from flowing or standing water.

END OF SECTION 015000

SECTION 033000 - CAST-IN-PLACE CONCRETE

1.1	SECTION REQUIREMENTS
A.	Submittals: concrete mix designs.
B.	Ready-Mixed Concrete Producer Qualifications: ASTM C 94/C 94M.

PART 2 - PRODUCTS

2.1	PEFORMANCE REQUIREMENTS
A.	Comply with ACI 301, "Specification for Structural Concrete," and with ACI 117, "Specifications for Tolerances for Concrete Construction and Materials."
2.2	MATERIALS
A.	Reinforcing Bars: ASTM A 615/A 615M, Grade 60, deformed.
B.	Portland Cement: ASTM C 150, Type I or II.
C.	Aggregates: ASTM C 33, coarse aggregate, graded.
1.	Maximum Coarse-Aggregate Size: 1 inch nominal.
D.	Air-Entraining Admixture: ASTM C 260.
2.3	CONCRETE MIXTURES
A.	Prepare design mixtures, proportioned according to ACI 301.
B.	Normal-Weight Concrete:
1.	Minimum Compressive Strength: 3000 psi at 28 days.
2.	Slump Limit: 4 inches, plus or minus 1 inch.
3.	Air Content: Maintain within range permitted by ACI 301. Do not allow air content of floor slabs to receive troweled finishes to exceed 3 percent.
C.	Measure, batch, mix, and deliver concrete according to ASTM C 94/C 94M.
1.	When air temperature is above 90 deg F, reduce mixing and delivery time to 60 minutes.

PART 3 - EXECUTION

3.1	CONCRETING
A.	Construct formwork according to ACI 301 and maintain tolerances and surface irregularities within ACI 347R limits of Class A, 1/8 inch for concrete exposed to view and Class B, 1/4 inch for other concrete surfaces.
B.	Comply with CRSI's "Manual of Standard Practice" for fabricating, placing, and supporting reinforcement.
C.	Place concrete in a continuous operation and consolidate using mechanical vibrating equipment.
D.	Protect concrete from physical damage, premature drying, and reduced strength due to hot or cold weather during mixing, placing, and curing.
E.	Formed Surface Finish: Smooth-formed finish for concrete exposed to view, coated, or covered by waterproofing or other direct-applied material; rough-formed finish elsewhere.
F.	Protect concrete from damage. Repair and patch defective areas.

END OF SECTION 033000

SECTION 061000 - ROUGH CARPENTRY

1.1	SECTION REQUIREMENTS
A.	Submittals: Manufacturer’s literature for metal framing anchors.

PART 2 - PRODUCTS

2.1	WOOD PRODUCTS, GENERAL
A.	Lumber: Provide dressed lumber, S4S, marked with grade stamp of inspection agency.
2.2	TREATED MATERIALS
A.	Preservative-Treated Materials: Use Category UC3b for exterior construction not in contact with the ground.
1.	Use treatment containing no arsenic or chromium.
2.	Kiln-dry lumber after treatment to a maximum moisture content of 19 percent.
3.	Mark lumber with treatment quality mark of an inspection agency approved by the ALSC Board of Review.
B.	Provide preservative-treated materials for all rough carpentry unless otherwise indicated.
1.	Wood cants, nailers, curbs, equipment support bases, blocking, stripping, and similar members in connection with roofing, flashing, vapor barriers, and waterproofing.
2.	Wood framing members that are less than 18 inches above the ground.
2.3	FRAMING
A.	Dimension Lumber:
1.	Maximum Moisture Content: 19 percent for 2-inch nominal thickness or less, 19 percent for more than 2-inch nominal thickness.
2.	Exposed Framing: Provide material hand-selected for uniformity of appearance and freedom from characteristics, on exposed surfaces and edges, that would impair finish appearance, including decay, honeycomb, knot-holes, shake, splits, torn grain, and wane.
a.	Species: SPF for tongue and groove decking.
b.	Grade: No. 2.
B.	Timbers 5-Inch Nominal Size and Thicker: No. 1 ; Eastern White Pine: NeLMA.
1.	Maximum Moisture Content: 20 percent.
2.4	MISCELLANEOUS LUMBER
A.	Miscellaneous Dimension Lumber: Construction, or No. 2 grade with 19 percent maximum moisture content of any species. Provide for nailers, blocking, and similar members.
2.5	MISCELLANEOUS PRODUCTS
A.	Fasteners: Size and type indicated. Where rough carpentry is exposed to weather, in ground contact, or in area of high relative humidity, provide fasteners of galvanized steel.
1.	Power-Driven Fasteners: CABO NER-272.
2.	Bolts: Steel bolts complying with ASTM A 307, Grade A; with ASTM A 563 hex nuts and, where indicated, flat washers.
3.	Threaded rod connectors – Stainless Steel, Grade 304.
B.	Metal Framing Anchors: Structural capacity, type, and size indicated.
1.	Use anchors made from galvanized steel for exterior locations and where indicated. The exposed portions of the standoff post base, angles and truss plates shall be powder coated
2.	Drift dowels for post anchor shall be mechanically galvanized, ASTM B695.

PART 3 - EXECUTION

3.1	INSTALLATION
A.	Set rough carpentry to required levels and lines, with members plumb, true to line, cut, and fitted. Locate nailers, blocking, and similar supports to comply with requirements for attaching other construction.
B.	Framing Standard: Comply with AF&PA's WCD 1, "Details for Conventional Wood Frame Construction," unless otherwise indicated.
C.	Do not splice structural members between supports unless otherwise indicated.
D.	Securely attach rough carpentry to substrates, complying with the following:
1.	CABO NER-272 for power-driven fasteners.
2.	Published requirements of metal framing anchor manufacturer.

END OF SECTION 061000

SECTION 073113 - ASPHALT SHINGLES

1.1	SECTION REQUIREMENTS
A.	Submittals: Product Data, Samples.
B.	Warranties: Manufacturer's standard written warranty, signed by manufacturer agreeing to promptly repair or replace asphalt shingles that fail in materials for a period of 40 years, prorated, with first 10 years nonprorated.

PART 2 - PRODUCTS

2.1	PERFORMANCE REQUIREMENTS
A.	Exterior Fire-Test Exposure: ASTM E 108 or UL 790, Class A. Identify products with appropriate markings of testing and inspecting agency acceptable to authorities having jurisdiction.
B.	Wind resistance: 110 MPH, ASTM D 3161 (Class F Wind Resistance)
C.	Algae resistance: 10 years
D.	Warranty: 40 year limited warranty on commercial projects.
2.2	GLASS-FIBER-REINFORCED ASPHALT SHINGLES
A.	Laminated-Strip Asphalt Shingles: ASTM D 3462/D 3462M, laminated, multi-ply overlay construction, mineral-granule surfaced, and self-sealing. Architectural shingle. Straight cut butt edge.
1.	Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to the following:
a.	CertainTeed Corporation.
b.	GAF.
c.	Owens Corning - Oakridge.
2.3	ACCESSORIES
A.	Synthetic felt underlayment: ASTM D 226/D 226M or ASTM D 4869/D 4869M, Type I or Type II,
B.	Self-Adhering Sheet Underlayment: ASTM D 1970/D 1970M, SBS-modified asphalt; mineral-granule or slip-resisting-polyethylene surfaced; with release paper backing; cold applied.
C.	Roofing Nails: Aluminum, stainless-steel, or hot-dip galvanized-steel shingle nails, minimum 0.120-inch diameter, of sufficient length to penetrate 3/4 inch into solid wood decking.
1.	Where nails are in contact with metal flashing, use nails made from same metal as flashing.
D.	Felt-Underlayment Nails: Aluminum, stainless-steel, or hot-dip galvanized-steel wire with low-profile capped heads or disc caps, 1-inch minimum diameter. Do not use staples.
E.	Sheet Metal Flashing and Trim: Comply with requirements in Section 076200 "Sheet Metal Flashing and Trim."
1.	Drip Edge: Formed sheet metal with at least a 2-inch roof deck flange and a 1-1/2-inch fascia flange with a 3/8-inch drip at lower edge.

PART 3 - EXECUTION

3.1	INSTALLATION
A.	Comply with recommendations in ARMA's "Residential Asphalt Roofing Manual" and with asphalt shingle recommendations in NRCA's "The NRCA Roofing Manual: Steep-Slope Roof Systems."
B.	Install synthetic felt underlayment on roof deck.
C.	Install first and remaining courses of asphalt shingles, stair-stepping diagonally across roof deck with manufacturer's recommended offset pattern at succeeding courses and maintaining uniform exposure.

END OF SECTION 073113

SECTION 132001 – HEAVY TIMBER FRAME PARK SHELTER

1.1	SECTION REQUIREMENTS
A.	Submittals: Product Data, Shop Drawings, and structural analysis data signed and sealed by a qualified professional engineer registered in the state of West Virginia.
1.	Submit letter of design certification, signed and sealed by a qualified professional engineer. Indicate name and location of Project, name of manufacturer, order number, name of contractor, governing building code and standards including year of edition, design loads and load combinations, building use category, and load importance factors.
B.	Comply with Log Home Council guidelines.

PART 2 - PRODUCTS

2.1	HEAVY TIMBER FRAMEWORK
A.	Heavy Timber Frame System Description: Gable roof, timber truss-frame clear span. Delivered pressure treated and pre-cut for assembly on site.
1.	Eave Height: 12’.
2.	Dimensions and Bay Spacings: Manufacturer's standard dimensions and bay spacings as indicated by nominal dimensions 24’ x 44’.
3.	Roof Slope: 6 inches per 12 inches.
B.	Structural Performance: Heavy timber frame shelter shall withstand the effects of gravity loads and the following loads and stresses:
1.	Design Loads: As required by IBC 2012.
2.	Roof live/ snow load: 40 psf.
3.	Roof dead load: 12 psf.
4.	Wind: Wind Speed (3 second gust) 115 mph, wind exposure C
C.	Structural-Framing Materials:
1.	Timber: Eastern white pine, #1 grade.
2.	Treatment: Pressure treated with sodium borate. Field cuts shall be treated with a brush- on preservative application.
3.	Truss components: nominal 4x 8 truss top and bottom chords, truss webs and king posts.
4.	Columns: 8x8 posts.
5.	Purlins: 6x8 purlins.
6.	Top plate: 6x 8
7.	Steel truss gusset plate: 1/4” thick, A36 steel, pre-drilled.
8.	Post Brackets: Concealed post brackets, Simpson CPT 887.
9.	Post to top plate connectors: Simpson HL43PC heavy angle, powder coated, black.
D.	Manufacturer: 24’ x 44’ shelter by Appalachian Log Structures Inc., PO Box 614, Ripley, WV 25271 (304) 372-6410 https://www.applog.com/ or equivalent.
2.2	TONGUE AND GROOVE HEAVY TIMBER DECKING
A.	Lumber: 2x 6 tongue and groove decking. # 2 grade, SPF, kiln dried. AITC standard for heavy timber decking.
B.	Decking shall be cut to full length from ridge to eave. No splices shall be allowed.
2.3	Fascia: 2x 6, # 2 grade SPF, kiln dried.

PART 3 - EXECUTION

3.1	ERECTION
A.	Setting Base: Install post base following manufacturer’s installation instructions.
1.	Base anchors shall be cast in place in the concrete piers.
B.	Erect framing true to line, level, plumb, rigid, and secure.
1.	Follow timber frame manufacturer’s instructions.
2.	Hoist and lift frames using slings. Chains shall not be allowed.
3.	Bracing: Temporary bracing shall not damage the finish surfaces. Bracing shall be constructed to withstand wind and weather that may occur when the Contractor is off the site.
C.	Tongue and groove decking installation: Provide roof decking full length from eave to ridge.
1.	Each piece shall be toe-nailed through the tongue with one 16d common nail and also face nailed with two 16d common nails at each purlin.

END OF SECTION 132001

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