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FHWA Apparent Earth Pressures

FHWA Apparent Earth Pressures


The current version of DeepEX also includes apparent earth pressure with FHWA standards (Federal Highway Administration). The following few pages are reproduced from applicable FHWA standards.


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Figure 1: Recommended apparent earth pressure diagram for sands according to FHWA


 

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Figure 2: Recommended apparent earth pressure diagram for stiff to hard clays according to FHWA.


In both cases for figures 2.4 and 2.5, the maximum pressure can be calculated from the total force as:


  1. For walls with one support:   p= 2 x Load / (H +H/3)

  2. For walls with more than one support: p= 2 x Load /{2 H – 2(H1 + Hn+1)/3)}


Training Video: Lateral Earth Coefficients and Soil Pressure Methods in DeepEX


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