Specifications include, but are not limited to: 2.1.2 Unless otherwise noted in the bid request, the metallic coating may be either zinc or aluminum, as covered by the applicable specifications listed herein. 2.1.3 All pipe shall have either 2 2/3 by 1/2 inch or 3 by 1 inch corrugations. 2.1.4 The specified thickness of the coated sheet shall be any of those listed for the allowable overfill heights shown in Standard Plan 725.00A Table 1, for the pipe diameter specified and the corrugation used. 2.1.5 All pipe ends shall have 2 2/3 by 1/2 inch annular corrugations extending at least 4 corrugations from the pipe end. This will require re-rolling of ends for certain pipe. 2.1.6 Metal arch pipe B1 through B4 shall comply with the dimensional requirements of AASHTO M 36. ; 2.2.1 Unless otherwise noted in the order, bands shall be annular corrugated over the entire width of the band with 2 2/3 by 1/2 inch corrugations.