Following is the variation of the field standard penetration number (N 60 ) in a sand deposit:

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Following is the variation of the field standard penetration number (N60) in a sand deposit:

Depth (m) .............. N60
1.5 ............................. 6
3 ................................ 8
4.5 ............................. 9
6 ................................ 8
7.9 ........................... 13
9 .............................. 14


The groundwater table is located at a depth of 6 m. Given: the dry unit weight of sand from 0 to a depth of 6 m is 18 kN/m3, and the saturated unit weight of sand for depth 6 to 12 m is 20.2 kN/m3. Use the relationship given in Eq. (3.13) to calculate the corrected penetration numbers.


Eq. (3.13)

1 0.5 CN Pa ||

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Principles Of Foundation Engineering

ISBN: 9781337705028

9th Edition

Authors: Braja M. Das, Nagaratnam Sivakugan

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