Soil Mechanics and Foundation
A grillage foundation

Consists of two sets of perpendicularly placed steel beams
Is treated as spread foundation
Is provided for heavily loaded isolated columns
All of these

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Soil Mechanics and Foundation
The shear strength of a soil

Decreases with increase in normal stress
Decreases with decrease in normal stress
Is inversely proportional to the angle of internal friction of the soil
Is directly proportional to the angle of internal friction of the soil

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