During the subsurface investigation for design of foundation, a standard penetration test was conducted at 4.5 m below the ground surface. The record of number of blows observed on the fine sand at that location is given as in table below. Penetration depth (cm) Number of blows 0-75 6 75-150 6 150-225 14 225-300 15 300-375 18 375-450 20 Assume water table is at a level of 1 m below ground level and correction factor for overburden pressure is 1.2. The correct N-value for the soil would be

During the subsurface investigation for design of foundation, a standard penetration test was conducted at 4.5 m below the ground surface. The record of number of blows observed on the fine sand at that location is given as in table below. Penetration depth (cm) Number of blows 0-75 6 75-150 6 150-225 14 225-300 15 300-375 18 375-450 20 Assume water table is at a level of 1 m below ground level and correction factor for overburden pressure is 1.2. The correct N-value for the soil would be

Structural Analysis

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ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Foundation construction

Question

During the subsurface investigation for design of foundation, a standard
penetration test was conducted at 4.5 m below the ground surface. The
record of number of blows observed on the fine sand at that location is
given as in table below.
Penetration depth (cm) Number of blows
0-75
75-150
150-225
225-300
300-375
375-450
6
6
14
15
18
20
Assume water table is at a level of 1 m below ground level and correction
factor for overburden pressure is 1.2.
The correct N-value for the soil would be

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