Specifications include, but are not limited to: The purchase of metallic-coated corrugated metal culvert pipe and appurtenances for maintenance purposes. 2.1.1 The pipe and connecting bands shall comply with applicable sections of Specification Sec 725, 1020 and 1022, except as noted herein. 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.