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Civil Engineering PE

Category - Foundations

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What is the allowed bearing capacity (in kips per square foot (ksf)) of a shallow bridge foundation with an ultimate bearing capacity of 2,000 ksf and an applied safety factor of 3.0?

667 ksf
2,000 ksf
6,000 ksf
Not enough information provided

Explanation

Answer: A - The allowed bearing capacity of a shallow bridge foundation with an ultimate bearing capacity of 2,000 ksf and an applied safety factor of 3.0 is 667 ksf.

Solution: Use the allowable bearing capacity equation

q_all = q_ult/ FS

Given, q_ult= 2,000 ksf

FS = 3.0

q_all = 2,000 ksf/ 3.0= 667 ksf

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