Answered: A square footing 5 ft by 5 ft supported…

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter6: Shallow Foundations: Ultimate Bearing Capacity

Section: Chapter Questions

Problem 6.17P: A 2.0 m 2.0 m square pad footing will be placed in a normally consolidated clay soil to carry a...

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A square footing 5 ft by 5 ft supported on a sandy stratum is designed to carry a column loading of 250,000 lb. The unit weight of the sands underlying the footing location vary between 120 and 125 pcf. Estimate the foundation settlement to be expected using the subgrade reaction method. (Neglect the weight of the footing.)

Expert Solution

Step 1

Given data:

$B = 5 f t A = 5 \times 5 = 25 f t^{2} γ = 120 p c f t o 125 p c f F = 250000 l b$

Getting the value of K_V:

$γ$ (pcf)	K_V (kcf)
90-110	150-300
110-130	350-550

for 125 pcf by interpolating we get the value K_V500 kcf.

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