Question
Asked Nov 27, 2019
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ABCD is a Raft Foundation rectangular plan with dimension of 20m*12m. The uniformly distributed load over the Raft 400kn/m².find the stress at point "O" which is the middle point of the Raft at the depth of below 6m.

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Expert Answer

Step 1

Given:

Size of raft = 20m×12m

Uniform distributed load = 400 KN/m2

Depth,z=6m

Given:

Size of raft = 20m×12m

Uniform distributed load = 400 KN/m2

Depth,z=6m

Step 2

Stress at Point anywhere below the rectangular area is given by:

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WHEN REACTANGLE IS DIVIDED INTO FOUR SMALL RECTANGLES ,-[()(x ), + (4,y }] WHEN POINT IS AT THE CENTRE OF THE RECTANGLE ABCD, ALL FOUR RECTANGLES ARE EQUAL AND THE EQUATION WILL BECOME; ,-(4) IN INFLUENCE FACTOR FOR THE SMALL RECTANGLE

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Step 3

Now divide the rectangle ABCD into small r...

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В с А2 А1 G А4 АЗ 6 A н 110 10 ш сO

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Civil Engineering

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