Soil Mechanics and Foundation
A grillage foundation

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

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Soil Mechanics and Foundation
Coefficient of compressibility is

independent of type of soil but depends on the stress history of soil
constant for any type of soil
different for different types of soils but same for a soil under different states of consolidation
different for different types of soils and also different for a soil under different states of consolidation

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Soil Mechanics and Foundation
The ultimate consolidation settlement of a structure resting on a soil

Increases with the decrease in the porosity of the soil
Decreases with the increase in the initial voids ratio
Increases with the increase in the initial voids ratio
Decreases with the decrease in the plastic limit

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