Example 5.15 A sheet pile wall drove into silty permeability of soil having a 7m 5*108 L. 1175 m m/sec. find the quantity of 1Sm seepage, pore water 1,0m 3.5 m 0.75m pressure at points (A to J), and exit gradient. 7 m

Structural Analysis
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Chapter2: Loads On Structures
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Example 5.15
A sheet pile wall drove into
silty
having
5*10-8
m/sec. find the quantity of
soil
a 7 m
permeability
of
1.75 m
15m
seepage,
pore
water
1.0m
3.5 m
0.75m
pressure at points (A to J),
and exit gradient.
7 m
Impermeable la
Solution
• The sheet pile wall length is in direction perpendicular to the page
• The problem is two-dimensional flow
• LB is upstream equipotential line
• JK is downstream equipotential line
• BF, FJ, and MN is flow lines
• H = 7- 1.75 = 5.25 m, Nr = 4, Na = 8
= 5. 10-8. 5.25
= 13.125 + 10-8 m/sec/m length
q = kH
The difference in the total head is 5.25m and the Na = 8 so in each drop.
loose 5.25/8 = 0.656m
Transcribed Image Text:m DrahmedsoilMechanicsnoteschapter5.pdf Downloads/DrahmedsoilMechanicsnoteschapter5.pdf Example 5.15 A sheet pile wall drove into silty having 5*10-8 m/sec. find the quantity of soil a 7 m permeability of 1.75 m 15m seepage, pore water 1.0m 3.5 m 0.75m pressure at points (A to J), and exit gradient. 7 m Impermeable la Solution • The sheet pile wall length is in direction perpendicular to the page • The problem is two-dimensional flow • LB is upstream equipotential line • JK is downstream equipotential line • BF, FJ, and MN is flow lines • H = 7- 1.75 = 5.25 m, Nr = 4, Na = 8 = 5. 10-8. 5.25 = 13.125 + 10-8 m/sec/m length q = kH The difference in the total head is 5.25m and the Na = 8 so in each drop. loose 5.25/8 = 0.656m
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