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guapka [62]
3 years ago
5

Your coworker was impressed with the efficiency you showed in the previous problem and would like to apply your methods to a pro

ject at a site with a sandy clay profile. Direct shear test results show a vertical pressure of 80 kPa and the shear stress at failure of 48 kPa. Present your recommendations to your coworker.
Engineering
1 answer:
JulijaS [17]3 years ago
4 0

Answer:

48 = C' + 80 tanФ

Explanation:

Recommendations to my coworker

a) Note that there are two unknowns, C' & Ф in the equation, so minimum of two test readings are required to have correct equation of the failure envelope.

Given reading of coworker

σn = 80 kPa

τf = 48 kPa

∴ 48 = C' + 80 tanФ

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