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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.

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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

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Enquiry is from Special Foundations topic in section Foundations of Construction & Building Materials

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Correct answer is (b) Grillage

Easiest 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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