Sherman-Dixie News
Kentucky Department of Highways adopts new reinforced concrete pipe installation specifications
Recent advances in the computer modeling have helped to further reveal the true behavior and condition of pipe in trench and embankment installations. The Standard Installation Direct Design (SIDD) procedure was adopted by AASHTO in 1998 and has led the Kentucky Department of Highways to adopt new reinforced concrete pipe installation specifications.
These newly adopted requirements clearly recognize the distinct differences between rigid and flexible pipe. Whereas reinforced concrete pipe (RCP) has the advantage of having the vast majority of its strength inherent in the pipe itself, flexible pipe has very little inherent strength, and thus the strength of flexible pipe (PVC, HDPE, etc) is dependent upon the stone envelope and bedding surrounding the pipe.
Consequently, less stone is required in both Type 1 and Type 4 reinforced concrete pipe installation when compared to flexible pipe.
Download our Type 1 and Type 4
reinforced concrete pipe installation diagram
This reduced amount of stone results in significant reduction in the overall cost, or “installed cost”, of concrete pipe when compared with flexible alternatives.
Download our Cost Analysis of Pipe Envelope table
At Sherman-Dixie, we believe in the efficiency, durability, and value of our products and are happy to answer questions or provide additional information regarding our products or the advantages of concrete. We believe in our products and our services and are committed to providing “systems that last and value that endures.”
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