QUESTION 1 1. a) A 7.5 ft wide rough continuous foundation is placed in the ground at 3.0 ft depth. Bedrock is 3 ft depth below the bottom of the foundation. Soil properties: c' = 210 lb/ft², = 25%, y = 115.0 lb/ft³ What is the ultimate bearing capacity of the foundation? b) What is ultimate bearing capacity assuming there is no bedrock present for at least 12.0 ft below the foundation?

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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QUESTION 1
1. a) A 7.5 ft wide rough continuous foundation is placed in the ground at 3.0 ft depth. Bedrock
is 3 ft depth below the bottom of the foundation.
Soil properties: c' = 210 lb/ft², = 25%, y = 115.0 lb/ft³
What is the ultimate bearing capacity of the foundation?
b) What is ultimate bearing capacity assuming there is no bedrock present for at least 12.0
ft below the foundation?
Transcribed Image Text:QUESTION 1 1. a) A 7.5 ft wide rough continuous foundation is placed in the ground at 3.0 ft depth. Bedrock is 3 ft depth below the bottom of the foundation. Soil properties: c' = 210 lb/ft², = 25%, y = 115.0 lb/ft³ What is the ultimate bearing capacity of the foundation? b) What is ultimate bearing capacity assuming there is no bedrock present for at least 12.0 ft below the foundation?
Expert Solution
Step 1

Given,

Width of footing (B) = 7.5 ft 

Footing depth (Df) = 3 ft 

Cohesion (c') = 210 lb/ft2

Angle of internal friction, ϕ' = 25o

Unit weight of soil, γ = 115 pcf 

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