- (a) ASTM. All pipe, materials and construction must meet ASTM standards. List the standard for all materials and methods in the detailed specifications.
- (b) Bedding. Specify the applicable ASTM material class of bedding, which must be matched to the proper strength pipe to support the anticipated loads.
- (c) Backfill. Specify the applicable ASTM standard for the backfill material and its placement.
- (d) Manholes. Specify the applicable ASTM standards for the manhole material, manhole installation and manhole testing to be used in the construction of the manholes. Bricks and/or concrete blocks will not be approved for manhole construction.
Added at 17 Ok Reg 1140, eff 6-1-00
Amended at 23 Ok Reg 937, eff 6-15-06
Added at 28 Ok Reg 1282, eff 7-1-11