Specifications include, but are not limited to: All material and workmanship shall meet the requirements of the January 2018 NCDOT Standard Specifications for road and structures, and any addenda thereto. All pipe must be inspected and approved by a NCDOT Materials & Test inspector and stamped. 1 Each 4’ -9 ½” wide (4’-6” bolt hold spacing) x 14N (11’-7 ½”) long, ¾” bolt and nut aluminum structural plate. Standard Plate Detail: Notes: 1. Plates are fabricated from an aluminum alloy with material properties that conform to AASHTO M219 and ASTM 8209 Specifications. 2. Dimensions are subject to manufacturing tolerances. 3. Additional rows of circumferential holes are furnished when reinforcing ribs are required. Heavy Hex Nut Notes: 1. Bolts and nuts shall meet the provisions of ASTM A-307, or ASTM A-449. 2. Dimensions subject to manufacturing tolerances. 3. Threads to provide a free running fit after galvanizing.