Specifications include, but are not limited to: a) Lumber - All lumber used in the construction of deck panels shall conform to the requirements set for the in the current INDOT & AASHTO Standard Specifications. Treated timber shall meet the requirements specified in INDOT’s Standard Specifications, Section 911.02, with the following additions and exceptions: All timber material shall be stress grade West Coast Douglas Fir Lumber, No. 1 or Better, as required by the design, but no less than No. 1 or Better. All surfacing shall be S4S to standard sizes. All cutting, framing, boring, and assembly, shall be done prior to treatment, and Certification of such shall be furnished by the Manufacturer prior to delivery of any material. The individual laminae shall be assembled into panel sections using 3/8” diameter steel dowel spaced not greater than three (3) foot center-to-center. Laminated deck panels shall be 4”, 6”, or 8” nominal size in thickness, with width and length to be determined at the time of placing order. All lumber shall be Pressure-Treated by the “Empty Cell Process” using copper naphthenate, and conform to the requirements of the American Wood Preservers Association “Standard Specifications for copper naphthenate, with a minimum retention of 0.075 pounds of preservative per cubic foot of wood treatment. b) Hardware – Bolts used for assembling sections shall be formed of rolled steel rods of structural grade and of such length as to properly grip the laminae composing the sections. Heads and nuts of bolts shall be recessed into the lumber so they do not interfere with placement of adjacent panel sections.
