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Foundation Engineering

Pile in Sands- I

Minimum centr...

Question

Minimum centre to centre spacing of friction piles of diameter (D) as per BIS code is

A

1.5D

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B

2D

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C

2.5D

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D

3D

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Solution

The correct option is D 3D
IS:2911 (Part-I)-1979 recommends a minimum spacing of 2.5 times the shaft diameter for point bearing piles, 3 times the shaft diameter for friction piles, whereas in loose sands or fill deposits, a minimum spacing of 2 times the diameter of the shaft is suggested. In the case of piles of non-circular cross-section, the diameter of the circumscribing circle shall be adopted.

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