---
title: Three Edged Bearing Strengths Non-RCP & Clay Pipe
description: Pipe strength classifications are based on three-edge bearing test strengths expressed in pounds per linear foot.
---

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# [Three Edged Bearing Strengths Non-RCP & Clay Pipe](https://resources.concretepipe.org/dd8-three-edge-bearing-strengths-nonreinforced-concrete-pipe-and-clay-pipe)

 Written by [Design Data](https://resources.concretepipe.org/author/design-data) | 10/4/21 5:56 PM

## Design Data 8:  Three Edge Bearing Strengths Nonreinforced Concrete Pipe and Clay Pipe

Pipe strength classifications established by manufacturing and material standards for nonreinforced concrete pipe and clay pipe are based on three-edge bearing test strengths expressed in pounds per linear foot. These test strengths are directly related to the load carrying capacity of the buried pipe. 

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