A residential foundation wall in Michigan is 8 feet high with 2 feet above grade. If the soil exerts a lateral pressure of 45 psf per foot of depth, what is the maximum lateral pressure at the bottom of the foundation?
Correct Answer
A) 270 psf
Only the portion below grade creates lateral pressure. With 6 feet below grade (8 total - 2 above grade) and 45 psf per foot: 6 × 45 = 270 psf.
Why This Is the Correct Answer
Only the portion below grade creates lateral pressure. With 6 feet below grade (8 total - 2 above grade) and 45 psf per foot: 6 × 45 = 270 psf.
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