Concrete dam H₂ H₂ Sandy layer Impervious rock L Figure 7.30 Given: upstream water level, H₂ = 16 m; downstream water level, H₂ = 2.3 m; thickness of the sandy layer, H, = 0.75 m; hydraulic conductivity of the sandy layer, k = 0.009 cm/sec; void ratio of sand, e = 0.8; and L = 45 m. Determine: a. Rate of seepage per unit length of the dam (in m³/hr/m) b. Seepage velocity c. Quantity of seepage per day if the dam is 350 m long Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203 Problems 7.4 Redo Problem 7.3 with the following information: H₁ = 12 m; H₂ = 2 m; H₂ = 0.5 m; k = 6.3 x 10³ cm/sec; e = 1.22; L = 52 m; and dam length = 410 m. Seepage
Concrete dam H₂ H₂ Sandy layer Impervious rock L Figure 7.30 Given: upstream water level, H₂ = 16 m; downstream water level, H₂ = 2.3 m; thickness of the sandy layer, H, = 0.75 m; hydraulic conductivity of the sandy layer, k = 0.009 cm/sec; void ratio of sand, e = 0.8; and L = 45 m. Determine: a. Rate of seepage per unit length of the dam (in m³/hr/m) b. Seepage velocity c. Quantity of seepage per day if the dam is 350 m long Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203 Problems 7.4 Redo Problem 7.3 with the following information: H₁ = 12 m; H₂ = 2 m; H₂ = 0.5 m; k = 6.3 x 10³ cm/sec; e = 1.22; L = 52 m; and dam length = 410 m. Seepage
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Problem 7.4 only.
Transcribed Image Text:7.3 Seepage is occurring through the sandy layer underneath the concrete dam as
shown in Figure 7.30.
Concrete dam
H₁
Seepage
H₂H₂
Sandy layer
Impervious rock
L
Figure 7.30
Given: upstream water level, H₁ = 16 m; downstream water level, H₂ = 2.3 m;
thickness of the sandy layer, H, = 0.75 m; hydraulic conductivity of the
sandy layer, k = 0.009 cm/sec; void ratio of sand, e = 0.8; and L = 45 m.
Determine:
a. Rate of seepage per unit length of the dam (in m³/hr/m)
b. Seepage velocity
c. Quantity of seepage per day if the dam is 350 m long
Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203
Problems
7.4 Redo Problem 7.3 with the following information: H₁ = 12 m; H₂ = 2 m; H₂ =
0.5 m; k = 6.3 x 10-³ cm/sec; e = 1.22; L = 52 m; and dam length = 410 m.
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