Standard Trench and Embankment

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023epipe

Trust but Verify
Resource # e-023
Not all pipe types are the same; neither are their design assumptions. Flexible pipe requires a strong side-fill to develop strength as it shortens vertically, deflecting outward to engage the side-fill as a Column to carry some of the vertical load; and as a Bearing to resist horizontal deflection. Rigid pipe relies very little on the horizontal support given by the side-fill soils, and provides the strength within the pipe wall composition. Based on this difference, installation assumptions should not be the same. This ePipe is to be used with YSK 144: A User’s Guide: Adhering to Federal Regulation 23CFR625 in the Design of Buried Culverts.

This ePipe is to be used with YSK 144: A User’s Guide: Adhering to Federal Regulation 23CFR625 in the Design of Buried Culverts.
Standard Installations
Resource # 07-126
The four zones (middle bedding, outer bedding, haunch, and lower side) are shown along with installation types based on soil characteristics and levels of compaction and the material used in construction of these zones.
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