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A _________ foundation is a special type of isolated footing, generally provided for heavy loaded steel structure specially in those location where bearing of soil is poor.

a) Raft
b) Grillage
c) Inverted arch
d) Combine

Answer: b
Explanation: Grillage Foundation is very useful where bearing of soil is poor. The depth of foundation is limited from 1 m to 1.5 m. The load of column is distributed or spread to a very large area by means of layers of joists.

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