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Foundation Engineering

Underreamed Piles

Consider the ...

Question

Consider the following statements about the under-reamed pile in swelling soils:
Which of these statements are correct?

A

1, 2 and 3

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B

1 and 2 only

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C

2 and 3 only

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D

1 and 3 only

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Solution

The correct option is D 1 and 3 only
Under-reamed pile is a special type of bored pile which is provided with a bulb/pedestal at the end. The usual size of such piles are 150 to 200 mm shaft diameter, 3 to 4 m long. The diameter of under-reamed portion is usually 2 to 3 times the shaft diameter.

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