Specification_Section_06_13_33.pdf

REPAIR PIER 3 - PHASE I SPECIFICATION NO. 1991

MOTCO CONCORD, CALIFORNIA

SECTION TABLE OF CONTENTS

DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES

SECTION 06 13 33

PIER TIMBERWORK AND REPAIR

PART 1 GENERAL

1.1 REFERENCE

1.2 DELIVERY AND STORAGE

1.3 WORK INVOLVED

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Lumber and Timbers

2.1.1.1 Solid Sawn

2.1.2 Hardware

2.1.2.1 Zinc-Coating

2.1.2.2 Washer Sizes

PART 3 EXECUTION

3.1 CONSTRUCTION

3.1.1 Framing

3.1.2 Bracing

3.1.3 Fastening

3.1.4 Galvanized Surface

3.1.5 Sealers

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SECTION 06 13 33

PIER TIMBERWORK AND REPAIR

PART 1 GENERAL

1.1 REFERENCE

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN WOOD PROTECTION ASSOCIATION (AWPA)

AWPA C2 (2003) Lumber, Timber, Bridge Ties and Mine Ties - Preservative Treatment by Pressure Processes

AWPA P5 (2014) Standard for Waterborne Preservatives

ASTM INTERNATIONAL (ASTM)

ASTM A123/A123M (2013) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A153/A153M (2009) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A307 (20122014) Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength

U.S. GENERAL SERVICES ADMINISTRATION (GSA)

FS RR-W-410 (Rev G) Wire Rope and Strand

1.2 DELIVERY AND STORAGE

Open-stack untreated timber and lumber material on skids at least 12 inches aboveground and at least 5 feet from edge of pavement, in a manner that will prevent warping and allow shedding of water. Close-stack treated timber and lumber material in a manner that will prevent long timbers or preframed material from sagging or becoming crooked. Keep ground under and within 5 feet of such piles free of weeds, rubbish, and combustible materials. Protect materials from weather. Handle treated timber with ropes or chain slings without dropping, breaking outer fibers, bruising, or penetrating surface with tools. Do not use cant dogs, peaveys, hooks, or pike poles. Protect timber and hardware from damage.

1.3 WORK INVOLVED

For any replacement, and re-assembly of timber bracings and any timber connected to piles to be wrapped, the materials and procedures shall be as

SECTION 06 13 33 Page 2 required in this section of the specification.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Lumber and Timbers

2.1.1.1 Solid Sawn

Provide solid sawn lumber and timbers of stress-rated Southern Pine or Douglas Fir-Larch, with a stress rating of 1600 psi minimum, and identified by the grade mark of a recognized association or independent inspection agency using the specific grading requirements of an association recognized as covering the species used. Lumber and timbers shall have a preservative treatment in accordance with AWPA C2 and AWPA P5 using water-borne preservative (material subject to marine borer exposure). Contractor shall be responsible for the quality of the treated product.

2.1.2 Hardware

Bolts with necessary nuts and washers, timber connectors, drift pins, dowels, nails, screws, spikes, and other fastenings. Bolts and nuts shall conform to ASTM A307. Provide cast-iron ogee washers, or plate washers.

Provide bolts with washers under nut and head. Provide timber connectors and other metal fastenings as required.

2.1.2.1 Zinc-Coating

Galvanize all ferous hardware by the hot-dip process in accordance with ASTM A123/A123M or ASTM A153/A153M, as applicable.

2.1.2.2 Washer Sizes

Cast-iron ogee washers shall be a minimum of 2-1/2 inches in diameter for 1 inch diameter bolts, and 2 inches in diameter for 7/8 inch diameter bolts.

Square plate washers shall be a minimum of 3-1/2 inches each side and 1-1/16 inch thick for 1 inch diameter bolts, and 3 inches each side and 15/16 inch thick for 7/8 inch diameter bolts.

PART 3 EXECUTION

3.1 CONSTRUCTION

3.1.1 Framing

Cut and frame lumber and timber so that joints will fit over contact surface. Secure timbers in alignment. Open joints are unacceptable.

Shimming is not allowed. Bore holes for bolts with a bit 1/16 inch larger in diameter than rod or bolt.

3.1.2 Bracing

Provide bracing of sufficient length to provide a minimum distance of 8 inches between outside bolt and end of brace. Bracing and girts shall bear firmly against piles or timber to which secured. Place fillers to avoid bending the bracing more than 1 inch out of line when bracing bolts or other fastenings are drawn up tight. Built-up fillers will not be permitted. Make filler a single piece of the same treated lumber as that

SECTION 06 13 33 Page 3 in the brace, with a width of at least 6 inches and a length of at least 12 inches. Bolt ends of bracing through pile, post, or cap with a bolt of minimum diameter indicated on drawings.

3.1.3 Fastening

Vertical bolts shall have nuts on the lower end. Provide bolts having sufficient additional threading to provide at least 3/8 inch per foot thickness of timber for future retightening.

3.1.4 Galvanized Surface

Repair and recoat zinc coating which has been field or shop cut, burned by welding, abraded, or otherwise damaged to such an extent as to expose the base metal.

3.1.5 Sealers

All holes and penetrations shall be sealed with a petroleum-based or mastic.

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