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
Effective stress on soil

Increases both voids ratio and permeability
Decreases both voids ratio and permeability
Increases voids ratio and decreases permeability
Decreases voids ratio and increases permeability

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