PIPE,CORRUGATED,PLASTIC,18 IN DIA X __FT POLYPROPYLENE (DOUBLE WALL) (CPPPDW), 2016 LA STANDARD SPECS FOR ROADS AND BRIDGES, SECTIONS 1006.05 AND 1006.06, PIPE MUST BE FROM THE APPROVED MATERIALS LIST (AML) FOR PLASTIC CULVERT PIPE AND JOINT SYSTEMS, MATERIAL CATEGORY PIPE COR POLYPROPYLENE DOUBLE WALL, GASKET MATERIAL MUST BE FROM THE APPROVED MATERIALS LIST (AML) FOR GASKET MATERIALS FOR CULVERT PIPE; PIPE,CORRUGATED,PLASTIC,24 IN DIA X __FT POLYPROPYLENE (DOUBLE WALL) (CPPPDW), 2016 LA STANDARD SPECS FOR ROADS AND BRIDGES, SECTIONS 1006.05 AND 1006.06, PIPE MUST BE FROM THE APPROVED MATERIALS LIST (AML) FOR PLASTIC CULVERT PIPE AND JOINT SYSTEMS, MATERIAL CATEGORY PIPE COR POLYPROPYLENE DOUBLE WALL, GASKET MATERIAL MUST BE FROM THE APPROVED MATERIALS LIST (AML) FOR GASKET MATERIALS FOR CULVERT PIPE
