3 Seepage is occurring through the sandy layer underneath the concrete dam asshown in Figure 7.30.Concrete damH₁SeepageH₂ H₂Sandy layerImpervious rockPXSXX2XLFigure 7.30Given: 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 thesandy 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 velocityc. Quantity of seepage per day if the dam is 350 m long

Given:- k=0.009 cm/seck=0.009×10-2×3600k=0.324 m/hrL=45 m

Answered: Rate of seepage per unit length of the…

Rate of seepage per unit length of the dam (in m³/hr/m) Seepage velocity Quantity of seepage per day if the dam is 350 m long

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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Concept explainers

Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.

Question

3 Seepage is occurring through the sandy layer underneath the concrete dam as
shown in Figure 7.30.
Concrete dam
H₁
Seepage
H₂ H₂
Sandy layer
Impervious rock
PXSXX2X
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

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