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The allowable soil pressure is 4,000 psf. Which option is the smallest foundation which can safely support a 62 kip column reaction? (Smallest is defined by the smallest soil contact area.)

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter8: Mat Foundations

Section: Chapter Questions

Problem 8.4P

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Question

The allowable soil pressure is 4,000 psf. Which option is the smallest foundation which can safely support a 62 kip column reaction? (Smallest is defined by the smallest soil contact area.)

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A square column foundation has to carry a gross allowable load of 1805 kN (FS = 3). Given: Df = 1.5 m, =15.9 kN/m3, = 34, and c = 0. Use Terzaghis equation to determine the size of the foundation (B). Assume general shear failure.
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