CORRUGATED METALLIC-COATED STEEL PIPE UNDERDRAIN
1022.1 Scope. This specification covers corrugated metallic-coated steel pipe underdrain.
1022.2 Basis of Acceptance. Basis of acceptance will be in accordance with Secs 1020.2, and 1020.5, as
specified herein.
1022.3 Material. Corrugated metallic-coated steel underdrain shall be in accordance with Sec 1020 and
AASHTO M 36, Type III pipe for zinc-coated or aluminum-coated, with the following modifications.
1022.3.1 Pipe 6 inches in diameter shall be fabricated of steel no less than 0.052 inch, 18 gage, specified
thickness. Pipe with diameters 8 to 21 inches , inclusive, shall be fabricated of steel no less than 0.064 inch, 16 gage , of the specified thickness.
1022.3.2 Coupling bands shall be of the same base metal as the pipe.
1022.3.3 Mechanical requirements of the base metal shall not apply.
1022.3.4 Samples for determination of coating thickness may be taken from fabricated pipe.
1022.4 Perforations. Unless otherwise specified, all pipe shall be perforated in accordance with the
requirements for Class 1 perforations AASHTO M 36.
Get an email when 1022 changes
Missouri revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.
Source: Missouri Standard Specifications for Highway Construction, 2026 (Oct) Edition. Pages 598–598 of 874. View official source ↗