Installation Considerations

installationfor-engineers installationfor-contractors For Owners and Engineer
This document is a convenient matrix based on AASHTO standards for selecting the best pipe material for your project.

For Inspectors and Contractors
This document lays out installation parameters required by AASHTO and the costs associated with them that contractors must consider prior to bidding a project.
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Flexible and Rigid Pipe Installation Review and Discussion
Resource # e-022
Flexible and Rigid Pipe Installation Review and Discussion describes several situations where Flexible and Rigid Pipe differ significantly. 

This ePipe is to be used with YSK 144: A User’s Guide: Adhering to Federal Regulation 23CFR625 in the Design of Buried Culverts.

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Water Table Concerns for Storm Drains and Culverts
Resource # e-025
Storm drain and culvert pipe installations can be sensitive to the presence of a water table in the backfill and surrounding soil. Soils placed and compacted in the pipe envelope need to be stable in the presence of water. The soil-pipe interaction analysis needs to account for the buoyant effect and impact on the passive soil pressure that a water table has on the soils used in the installation. For a rigid pipe installation these factors are somewhat insignificant, since the majority of the strength is resident within the structure of the rigid pipe material. But, for a flexible pipe, the majority of the strength is built into the soil envelope which is impacted directly and extensively by the presence of a water table.

This ePipe is to be used with YSK 144: A User’s Guide: Adhering to Federal Regulation 23CFR625 in the Design of Buried Culverts.

Fires in Sewers and Culverts
Resource #02-901
The susceptibility of various pipe materials to fires should be considered when planning storm sewer, sanitary sewer or culvert projects. This publication presents laboratory test results performed on various pipe materials in accordance with ANSI/ASTM E84, “Test Methods for Surface Burning Characteristics of Building Materials.”
What Positive Lessons can be Learned from an HDPE Fire?
(YSK Bulletin #134) June, 2005
A fire in a 42in. HDPE storm drain turned out to be both frightening and costly to Herriman City, a growing community in Utah.