Question 1: A sheet pile wall isolates two flooded areas as shown in Figure 1. The head loss ÿH generates a downward flow on the upstream side and an upward flow on the downstream side. If the saturated soil has a density of 2375 kg/m3 on either side of the curtain, calculate the effective stress at points A and B. 1 m 4 m 5 m 7.5 m 12 = 150 kPa Figure 2 Figure 1- Question 2: Using the data in Figure 2, calculate the vertical stress induced by the loading of the foundations at point A, located 2 m deep, halfway between the two footings. Use the figure 5 to find the coefficient of influence. Representat B 6 m 2 m 3m → 1 m 2 111 311 91 = 125 kPa

Question 1: A sheet pile wall isolates two flooded areas as shown in Figure 1. The head loss ÿH generates a downward flow on the upstream side and an upward flow on the downstream side. If the saturated soil has a density of 2375 kg/m3 on either side of the curtain, calculate the effective stress at points A and B. 1 m 4 m 5 m 7.5 m 12 = 150 kPa Figure 2 Figure 1- Question 2: Using the data in Figure 2, calculate the vertical stress induced by the loading of the foundations at point A, located 2 m deep, halfway between the two footings. Use the figure 5 to find the coefficient of influence. Representat B 6 m 2 m 3m → 1 m 2 111 311 91 = 125 kPa

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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Question

Influence value, /
0.01
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0
Load qo per unit of area
M=
m and n are interchangeable
0₂= qol
0.02
0.01
m=0.5,
m=0.0
0.02
0.04
3=6
0.04
0.1
m = 1.0
m= 2.0
0.1
0.2 0.3
E
0.6
0.28
0.26
0.24
0.22
0.20
0.18
0.5
Figure 5
1
m = 0.5
m=1.8
0.2 0.3 0.5 0.8 1
Value of n
2
m=2.0
+-
2
3 4
m = 2.5
29
3
6 8 10
m = 1.2
m = 1.0
m=0.9
m=0.8
m=0.7
m=0.6
m = 0.5
m = 0.4
4
m=0.3
m = 0.2
m=0.1
m=0.0
6
0.28
0.26
8 10
0.24
m= 1.6
+ m=1.4
0.22
0.20
0.18
0
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
m=∞
m=3.0

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