Building Construction
Raft foundation are generally preferred to when the area required for individual footing, is more than

25% to total area
40% to total area
30% of total area
50% of total area

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Building Construction
Pick up the correct statement about silt soil from the following:

The silt soil has particle size from 0.02 mm to 0.06 mm
The least plastic type normally consists of more or less equidimensional grains of quartz
All listed here
In organic fine grained silt soil possesses no plasticity

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