SECTION TIMBER FLOATS

Transcription

1 SECTION PART 1 - GENERAL 1.01 SUMMARY A. This section covers furnishing and installing the timber float framing for the pile guide area, and all other components not specifically mentioned, necessary to complete the facility as shown on the plans and as specified in these specifications. B. Work included: design, furnish, deliver and install, as specified, the following as shown on the drawings. 1. All materials required for the new pile guides, including steel shapes and hardware (specified under section Metal Fabrications), UHMW pads and decking. C. Supply all equipment and labor to frame the new piling in place. D. Related work specified elsewhere: 1. Prestressed Concrete Pile, Section Metal Fabrications, Section E. Dimensions. The dimensions shown on the drawings for length and width of the guides, indicate the sizes and details desired, but may be varied slightly, subject to approval by the Engineer, and to meet existing conditions. F. Work included: Design, furnish, deliver and install, as specified, the noted products, and as shown on the drawings QUALITY ASSURANCE Workmanship: A. All finished wooden structural members shall be free from twists, bends, and distortions. All exposed wooden construction shall be free of sharp edges and burrs. Ends and edges of exposed wooden members shall be rounded or beveled. Projecting materials and burrs which would prevent bearing of the various members on each other shall be removed. TECHNICAL PROVISIONS

2 B. All bolts, nuts and washers shall be set square with connecting structural members, and the nuts shall be drawn up tight. Lock washers or other devices shall be used to prevent nuts form loosening after being properly tightened. Experience. The fabricator shall furnish adequate evidence of a minimum of five (5) years of ongoing successful experience in fabricating floating dock structures and that all workmen employed in fabrications are properly experienced and skilled in the work they are called upon to perform. C. Delivery and Storage: All materials shall be supplied free of defects with no signs of cracking. Materials shall be stored on site to prevent damage such as overstressing, warping or twisting. Any damaged materials shall be rejected and removed from the job site. D. The Engineer will be allowed access to all sites where materials pertaining to this contract are manufactured or constructed for purposes of inspection SUBMITTALS A. Shop drawings shall be submitted as required by these specifications. The drawings shall show details of construction, other details that would be necessary to construct the guides complete and in place as shown on the plans and as specified in these specifications. B. Materials shall be furnished as requested, with test certificates and experience records demonstrating the resistance of all materials to marine exposure. C. Submit the following for review. 1. Framing lumber. 2. Decking material. 3. Lumber pressure treatment. 4. Nuts, bolts, screws, plates, fittings, clips, and miscellaneous hardware. D. Specifications describing the standards of quality for materials and craftsmanship. The specifications are intended to complement the drawings. E. Submit evidence of experience as required CODES AND STANDARDS A. Equipment furnished shall meet the requirements of all applicable industry standards and specifications as to design, construction, and performance, and shall comply with TECHNICAL PROVISIONS

3 the requirements of all local, state and national codes, including Orders of the State of California, Division of Occupational Safety and Health. Bolts, nuts and screw threads shall conform to the American National Standards. B. Applicable Codes and Industry Standards. California Building Code, Latest Edition SHOP DRAWINGS A. Shop Drawings - Shop Drawings of the following shall be submitted for approval: 1. Timber guide system: Shop Drawings for guide systems shall be prepared in accordance with these Specifications and shall indicate details of construction and erection. The Drawings shall show the manufacturer's recommended details and materials for the work required herein and the following: a. Details of timber and miscellaneous metal fabrications. b. Float dimensions. B. Catalog Sheets - manufacturer's catalog sheets showing compliance with these Specifications shall be submitted for all standard manufacturers' items PERFORMANCE REQUIREMENTS: A. All welding shall be performed by a welder certified in accordance with the requirements of AWS B3.0 using procedures, materials and equipment of the type required for the work. B. No connecting device shall protrude beyond the fascia into the tie-up area. Any connecting device protruding above the surface of the deck shall have a low, rounded profile. C. The work specified may be assembled by any method or means the Contractor may elect, provided the complete structure, in place conforms to the approved drawings and specifications. Any nail holes shall be pre-drilled to prevent splitting. D. All walers, fascia, spacers, plywood or any other member that is subject to foot traffic, shall be flush with the walking surface (+1/8"). E. Lumber splices shall have a gap of.25" between adjoining ends for air circulation. F. Adjustment of variation in pile spacing shall be accomplished by altering the length of the floats. Cantilevered pile assemblies shall not exceed two and a half feet (2.5') in length. TECHNICAL PROVISIONS

4 G. The work specified when assembled shall conform to the approved drawings and Specifications and Shop Drawings. The Contractor shall submit Shop Drawings for the method of float construction and installation for review and approval by the Engineer. The Contractor shall coordinate with the Engineer to inspect and approve the fabrication facilities prior to fabrication of docks. PART 2 - PRODUCTS 2.01 MATERIALS A. Timbers: 1. The floating dock structure shall consist of framing timbers as shown on the plans. Where framing members come together at an angle they shall be secured by steel angle brackets or clips, a minimum of 3/8 inch thick (unless otherwise noted). Each deck plank shall span the full width of the deck and shall be secured to the timbers by two fasteners for each point where a deck plank crosses a framing timber. #12 x 3-1/2 long stainless steel flat head Phillips or square drive screws shall be flush to 1/8 inch below the deck surface. Pre-drill all deck boards to receive screws. 2. All lumber shall be minimum Douglas Fir, coast region, S4S Dense No. 1, per WWPA Grading Rules, free of heart center (3" and larger only) 19% moisture content maximum, and selected for appearance. Wane shall not be accepted on the top surface of decking, walers, or rub strips. Lumber shall be fabricated accurately to provide uniform gaps and butt joint connections. 3. Lumber shall be pressure preservative treated to conform with AWPI Standard LP-22 ACZA (0.6 pcf). Treatment to refusal shall not be accepted as a substitute for this specification. To the degree possible, all lumber will be cut to length and bolt holes drilled prior to pressure treatment. All treated lumber shall meet with and be stamped by the AWPB Quality Control. Tie bands used for delivery must have plates between the bands and wood to prevent crushing. 4. Holes and ends exposed after pressure treatment will be brushed or swabbed in the field with the preservative solution. 5. Certificates of Conformance to AWPB, wood preservative, shall be submitted prior to assembly of float sections. 6. Should the grade stamp be obliterated from the wood during the treatment process, a Certificate of Compliance shall be submitted to the Engineer demonstrating lumber specification compliance. B. Steel Hardware: TECHNICAL PROVISIONS

5 1. All hardware, except stainless steel, including bolts, nuts, washers, angles, clips, utility stands, pile guides, nails, etc. shall be hot dip galvanized after fabrication, per ASTM 153 and 123 per Section "Galvanizing" of the Standard Specifications. Washers shall be used with all nuts and bolts bearing on wood surfaces. 2. All minimum edge distances for steel plates shall be in accordance with AISC Manual of Steel Construction, Seventh Edition. Minimum edge distances for bolt holes in timber members shall be in accordance with Western Woods Use Book, Second Edition. 3. Washers shall be used with all nuts and bolts that bear on wood or slotted holes in steel frames. 4. A Certificate of Galvanizing shall be submitted to the Engineer prior to the installation of any galvanized components. 5. Mill Certificates demonstrating conformance to the specifications for the bolts and thru-rods shall be submitted for the Engineer's approval prior to assembly of the docks. C. Fasteners: 1. Steel bolts shall be ASTM A 307 American Standard regular with hexagonal or carriage heads and nuts. Any fasteners between aluminum components shall be 316 stainless steel. Fasteners between any hot-dip galvanized steel components and aluminum may be hot dipped galvanized in accordance with ASTM A 153, or 316 stainless steel. All Dissimilar metals shall be electrically isolated with nylon washers and inserts in accordance with Section PART 3 - EXECUTION 3.01 FABRICATION A. Fabricate guide structure in accordance with manufacturer s approved drawings and specifications. Do not proceed until unsatisfactory conditions are corrected WELDING A. All welding shall be performed by a welder certified in accordance with the requirements of AWS B3.0, using procedures, materials and equipment of the type required for the work RESPONSIBILITY TECHNICAL PROVISIONS

6 A. Damage. The Contractor shall be responsible for all damage to the units resulting from handling, transportation and installation. He shall repair or replace all such damage at his own expense. B. Installation. The Contractor shall install the units as shown on the drawings in a workmanlike manner to the satisfaction of the Engineer. C. Performance. The Contractor shall be responsible for the satisfactory performance of the completed installation as described above. END OF SECTION TECHNICAL PROVISIONS