Solve only 15.11 15.10 A square footing (B X B) must carry a gross allowable load of 670 kN. Thebase of the footing is to be located at a depth of 0.92 m below the groundsurface. For the soil, we are given that y = 18.1 kN/m³, c' = 0, and o' = 40°.If the required factor of safety is 3, determine the size of the footing. UseTerzaghi's bearing capacity factors and general shear failure of soil. 15.11 Repeat Problem 15.10 with the following: gross allowable load = 92.5 kip;D₁ = 2 ft; y = 115 lb/ft³; c' = 0; ' = 35°; and required factor of safety = 3.

Qu = 92.5 kip or 92500 lb Df = 2 ft γ = 115 pcf c' = 0 ϕ' = 35o FS = 3

Answered: 15.11 Repeat Problem 15.10 with the…

15.11 Repeat Problem 15.10 with the following: gross allowable load = 92.5 kip; D₁ = 2 ft; y = 115 lb/ft³; c' = 0; ' = 35°; and required factor of safety = 3.

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter16: Soil Bearing Capacity For Shallow Foundations

Section: Chapter Questions

Problem 16.13P: A square footing (B B) must carry a gross allowable load of 1160 kN. The base of the footing is to...

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Concept explainers

Braced cuts

The braced cut is a method of providing lateral support to the soil in foundation trenches, to prevent the trenches from deformation by the caving in of soil and resisting it from moving laterally. During shallow excavation in firm soil, generally, slopes are provided to resist the caving in of soil. During shallow excavation in soft soil and deep excavation, the chances of caving in of soil increase. Hence, it becomes necessary to make a provision to resist the deformation of trenches due to caving in of soil. The braced cut is the method used for such conditions. The excavation using braced cuts is a bit uneconomical as compared to the traditional open-cut excavation method but provides better safety than the cut excavation method.

Question

Solve only 15.11

15.10 A square footing (B X B) must carry a gross allowable load of 670 kN. The
base of the footing is to be located at a depth of 0.92 m below the ground
surface. For the soil, we are given that y = 18.1 kN/m³, c' = 0, and o' = 40°.
If the required factor of safety is 3, determine the size of the footing. Use
Terzaghi's bearing capacity factors and general shear failure of soil.

15.11 Repeat Problem 15.10 with the following: gross allowable load = 92.5 kip;
D₁ = 2 ft; y = 115 lb/ft³; c' = 0; ' = 35°; and required factor of safety = 3.

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