B) ) A river bed consists of sand layer overlying impermeable rock; the depth of water is in river 2.50 m. A long cofferdam is formed by driving two lines of sheet piling at depth below the level of river bed and excavation to depth 2.m below the bed level is carried out within the coffer dam. The water level within the cofferdam is kept at excavation level by pumping. The saturated weight density of soil Ysa 20 KN/m³ , determine the factor of safety against boiling at excavation bottom. Sheet Sheet 2,0m , Dalum Rock layer
B) ) A river bed consists of sand layer overlying impermeable rock; the depth of water is in river 2.50 m. A long cofferdam is formed by driving two lines of sheet piling at depth below the level of river bed and excavation to depth 2.m below the bed level is carried out within the coffer dam. The water level within the cofferdam is kept at excavation level by pumping. The saturated weight density of soil Ysa 20 KN/m³ , determine the factor of safety against boiling at excavation bottom. Sheet Sheet 2,0m , Dalum Rock layer
Principles of Foundation Engineering (MindTap Course List)
8th Edition
ISBN:9781305081550
Author:Braja M. Das
Publisher:Braja M. Das
Chapter16: Soil Improvement And Ground Modification
Section: Chapter Questions
Problem 16.9P
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Question
![B) )A river bed consists of sand layer overlying impermeable rock; the depth of
water is in river 2.50 m. A long cofferdam is formed by driving two lines of sheet piling
at depth below the level of river bed and excavation to depth 2.m below the bed level is
carried out within the coffer dam. The water level within the cofferdam is kept at
excavation level by pumping. The saturated weight density of soil Ysat-20 KN/m³ ,
determine the factor of safety against boiling at excavation bottom.
Sheet
png
Sheet
piing
'2,0m
0.9 Datum
Rock layer](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F31f89ffc-3adf-4f1f-8c65-92992f749281%2F49cf7db4-7614-466b-8336-244e05472882%2Fne033c6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:B) )A river bed consists of sand layer overlying impermeable rock; the depth of
water is in river 2.50 m. A long cofferdam is formed by driving two lines of sheet piling
at depth below the level of river bed and excavation to depth 2.m below the bed level is
carried out within the coffer dam. The water level within the cofferdam is kept at
excavation level by pumping. The saturated weight density of soil Ysat-20 KN/m³ ,
determine the factor of safety against boiling at excavation bottom.
Sheet
png
Sheet
piing
'2,0m
0.9 Datum
Rock layer
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