A trench is to be excavated in a clay soil with y at = 20 kN/m² and s, = 15 kPa. (a) Determine the theoretical maximum depth of the trench without lateral support. (b) It was decided to use a bentonite slurry of unit weight y, to fill the trench as excavation proceeds. Show that the theoretical maximum depth of the trench is H, = unit weight of the soil and s, is the undrained shear strength. (c) How much deeper can the trench be excavated by using a bentonite slurry of y; = 11 kN/m?? - where y a is the saturated Yrat - Yf
A trench is to be excavated in a clay soil with y at = 20 kN/m² and s, = 15 kPa. (a) Determine the theoretical maximum depth of the trench without lateral support. (b) It was decided to use a bentonite slurry of unit weight y, to fill the trench as excavation proceeds. Show that the theoretical maximum depth of the trench is H, = unit weight of the soil and s, is the undrained shear strength. (c) How much deeper can the trench be excavated by using a bentonite slurry of y; = 11 kN/m?? - where y a is the saturated Yrat - Yf
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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SOLVE THE PROBLEM a,b,c parts GIVEN IN IMAGE IN TYPED FORM NOT WRITTEN FORM PLEASE.
![A trench is to be excavated in a clay soil with y sat =
20 kN/m² and s, = 15 kPa.
(a) Determine the theoretical maximum depth of the
trench without lateral support.
(b) It was decided to use a bentonite slurry of unit
weight y, to fill the trench as excavation proceeds.
Show that the theoretical maximum depth of the
45.
- where ya is the saturated
trench is H, =
unit weight of the soil and s, is the undrained
shear strength.
(c) How much deeper can the trench be excavated by
using a bentonite slurry of y;= 11 kN/m²?
Ysat - Y](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa9ebedc1-cd5b-4e98-a400-ce3b40cf3866%2F5aaefd41-29c4-4d11-bb2c-5e71c949ef66%2F82v5tk6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A trench is to be excavated in a clay soil with y sat =
20 kN/m² and s, = 15 kPa.
(a) Determine the theoretical maximum depth of the
trench without lateral support.
(b) It was decided to use a bentonite slurry of unit
weight y, to fill the trench as excavation proceeds.
Show that the theoretical maximum depth of the
45.
- where ya is the saturated
trench is H, =
unit weight of the soil and s, is the undrained
shear strength.
(c) How much deeper can the trench be excavated by
using a bentonite slurry of y;= 11 kN/m²?
Ysat - Y
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