For the sheet pile condition shown in the figure, find the depth below the dredge line at which thenet pressure equals zero. Note: the sheet pile is driven into sandy soil.Y = 110 pcf10 ftO' = 30°10 ftYat = 122.4 pcfO' = 30°

Ka=1-sinϕ1+sinϕ=1-sin 301+ sin 30⇒Ka=0.33also,Kp=1+sinϕ1-sinϕ=1+sin 301-sin 30⇒Kp=3…

For the sheet pile condition shown in the figure, find the depth below the drec net pressure equals zero. Note: the sheet pile is driven into sandy soil. n = 110 pcf ' = 30° 10 ft --- 10 ft Ya = 122.4 pcf = 30°

For the sheet pile condition shown in the figure, find the depth below the drec net pressure equals zero. Note: the sheet pile is driven into sandy soil. n = 110 pcf ' = 30° 10 ft --- 10 ft Ya = 122.4 pcf = 30°

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

Braced cuts

The braced cut is a method of providing lateral support to the soil in foundation trenches, to prevent the trenches from deformation by the caving in of soil and resisting it from moving laterally. During shallow excavation in firm soil, generally, slopes are provided to resist the caving in of soil. During shallow excavation in soft soil and deep excavation, the chances of caving in of soil increase. Hence, it becomes necessary to make a provision to resist the deformation of trenches due to caving in of soil. The braced cut is the method used for such conditions. The excavation using braced cuts is a bit uneconomical as compared to the traditional open-cut excavation method but provides better safety than the cut excavation method.

Question

For the sheet pile condition shown in the figure, find the depth below the dredge line at which the
net pressure equals zero. Note: the sheet pile is driven into sandy soil.
Y = 110 pcf
10 ft
O' = 30°
10 ft
Yat = 122.4 pcf
O' = 30°

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Step 1:-Calculation of active and passive earth pressure coefficents

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Step 2:- Calculation of depth

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Step 3:- To determine the depth below dredge line at which net pressure =0

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