1. (a) Calculate the pore pressure, the total stress, and the effective stress at the indicated points in the figures below. (b) Determine the head loss, the hydraulic gradient, and the discharge velocity in each layer. (c) evaluate the possibility of quicksand in scenarios (a) and (b) if the head difference increases.
1. (a) Calculate the pore pressure, the total stress, and the effective stress at the indicated points in the figures below. (b) Determine the head loss, the hydraulic gradient, and the discharge velocity in each layer. (c) evaluate the possibility of quicksand in scenarios (a) and (b) if the head difference increases.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![1. (a) Calculate the pore pressure, the total stress, and the effective stress at the indicated points in
the figures below.
(b) Determine the head loss, the hydraulic gradient, and the discharge velocity in each layer.
(c) evaluate the possibility of quicksand in scenarios (a) and (b) if the head difference increases.
(a)
[b]
A
B
Water: yw=9.81 kN/m3
Sand 1: ysat 18 kN/m3.
k=10-4 m/s
18m
2m
Very Permeable Sand Layer
8m
C
Sand 2: ysat 19 kN/m3 12m
6m k-2-10-4 m/s
D↓
8m
A
B
C
6m
Water: Yw=9.81 kN/m³
Sand 1: Yeat 18
kN/m³. k=10-4 m/s
Sand 2: Ysat=19
kN/m³ k-2-10-4
m/s
Very Permeable Sand Layer
2m
8m
12m](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F387044d9-b7d3-473d-9dfc-0c5bb46ba0d9%2F22ad18aa-84b7-4ef9-b6d3-420a1f817b89%2F4m04kr5_processed.png&w=3840&q=75)
Transcribed Image Text:1. (a) Calculate the pore pressure, the total stress, and the effective stress at the indicated points in
the figures below.
(b) Determine the head loss, the hydraulic gradient, and the discharge velocity in each layer.
(c) evaluate the possibility of quicksand in scenarios (a) and (b) if the head difference increases.
(a)
[b]
A
B
Water: yw=9.81 kN/m3
Sand 1: ysat 18 kN/m3.
k=10-4 m/s
18m
2m
Very Permeable Sand Layer
8m
C
Sand 2: ysat 19 kN/m3 12m
6m k-2-10-4 m/s
D↓
8m
A
B
C
6m
Water: Yw=9.81 kN/m³
Sand 1: Yeat 18
kN/m³. k=10-4 m/s
Sand 2: Ysat=19
kN/m³ k-2-10-4
m/s
Very Permeable Sand Layer
2m
8m
12m
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