A square raft foundation 4 m by 4 m is placed at a depth of 2.0 m below ground level is to carry a gross loading intensity of 250 KN/ The granular soil layer has a bulk unit weight of 20 kN/m³. The resu of cone penetration test (CPT) on the soil are given below: Depth from ground level, z (m) Cone resistance, qc kN/m²) 0.0-2.0 2000 2.0-5.0 3500 5.0-8.0 5150 8.0-11.0 6300 11.0-15.0 3800 Determine the immediate settlement using Strain Influence actor method proposed by Schmertmann and Hartman (1978), 1 year after construction.

A square raft foundation 4 m by 4 m is placed at a depth of 2.0 m below ground level is to carry a gross loading intensity of 250 KN/ The granular soil layer has a bulk unit weight of 20 kN/m³. The resu of cone penetration test (CPT) on the soil are given below: Depth from ground level, z (m) Cone resistance, qc kN/m²) 0.0-2.0 2000 2.0-5.0 3500 5.0-8.0 5150 8.0-11.0 6300 11.0-15.0 3800 Determine the immediate settlement using Strain Influence actor method proposed by Schmertmann and Hartman (1978), 1 year after construction.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Foundation construction

Question

A square raft foundation 4 m by 4 m is placed at a depth of 2.0 m
below ground level is to carry a gross loading intensity of 250 kN/
The granular soil layer has a bulk unit weight of 20 kN/m³. The resu
of cone penetration test (CPT) on the soil are given below:
Depth from
ground level,
z (m)
Cone
resistance,
qc kN/m²)
0.0-2.0
2000
2.0-5.0
3500
5.0-8.0
5150
8.0-11.0
6300
11.0-15.0
3800
Determine the immediate settlement using Strain Influence actor
method proposed by Schmertmann and Hartman (1978), 1 year after
construction.

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This is for foundation engineering review. Please show work and choose from the answer choices
11.19 Refer to Figure 11.45. A square footing, 2 x 2 m in size, supports a column load of 300 kN. The soil characteristics are given in the figure. Field monitoring indi- cated that the foundation settlement was 19 mm during the first 12 months. a. Estimate the average stress increase in the clay layer due to the applied load. b. Estimate the primary consolidation settlement. c. What is the degree of consolidation after 12 months? d. Estimate the coefficient of consolidation for the pressure range. e. Estimate the settlement in 24 months. 300 kN 1m 2m x 2 m Ya = 14 kN/m3 I m Yu = 17 kN/m 24% G, = 2.74 LL = 46 2 m o'= 40 kN/m² C, = 1/5C. Sand Clay Figure 11.45 O Cengrge learring 2014