, hollow-wall closed profile, HDPE pipe. Standard profile pipe shall exhibit a pipe stiffness of 46 psi when tested in accordance with ASTM D-2412, and in accordance with municipal... Specifications Large Diameter Closed Profile, Culvert/Sewer Pipe I. THE PRODUCT: The pipe is a helical-spiral manufactured with a smooth internal and external surface, inside diameter sized... and highway specifications including AASHTO design specification, section 18, paragraphs 18, 4.0, 18, 4.1, etc. Low profile pipe stiffness shall be in a manner to develop...

Renew HDPE Liners BASED ON PIPE FLOWING FULL AT 1% SLOPE CMP MANNINGS 'n' = .024 RENEW MANNINGS 'n' = .009 CMP LINER CMP FLOW LINER FLOW % FLOW 12 10 866 1419 164 15 12 1569 2308 147... 221737 274534 124 120 84 402066 414136 103 BASED ON PIPE FLOWING FULL AT 1% SLOPE RCCP MANNING `n`= .015 RENEW MANNING `n`=.009 RCCP LINER RCCP FLOW LINER FLOW % FLOW 12 10 1385 1419...