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A sample of sand is tested in a direct shear device to determine its angle of internal friction. Cross-sec- tion dimensions of the shear box are 2.5" by 2.5". The sample is tested at a vertical normal force N of 100 lb and resulted in a maximum horizontal shear force T of 70 lb. (a) Assuming the sand is cohesionless, what is the angle of internal friction of this sand? (b) If a second test is conducted at a vertical normal force of 140 lb, what would be the anticipated maxi- mum horizontal shear force T?

A sample of sand is tested in a direct shear device to determine its angle of internal friction. Cross-sec- tion dimensions of the shear box are 2.5" by 2.5". The sample is tested at a vertical normal force N of 100 lb and resulted in a maximum horizontal shear force T of 70 lb. (a) Assuming the sand is cohesionless, what is the angle of internal friction of this sand? (b) If a second test is conducted at a vertical normal force of 140 lb, what would be the anticipated maxi- mum horizontal shear force T?

Structural Analysis
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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A sample of sand is tested in a direct shear device to determine its angle of internal friction. Cross-sec tion dimensions of the shear box are 2.5" by 2.5". The sample is tested at a vertical normal force N of 100 lb and resulted in a maximum horizontal shear force T of 70 lb. (a) Assuming the sand is cohesionless, what is the angle of internal friction of this sand? (b) If a second test is conducted at a vertical normal force of 140 lb, what would be the anticipated maxi mum horizontal shear force T?
A sample of sand is tested in a direct shear device to determine its angle of internal friction. Cross-sec- tion dimensions of the shear box are 2.5" by 2.5". The sample is tested at a vertical normal force N of 100 lb and resulted in a maximum horizontal shear force T of 70 lb. (a) Assuming the sand is cohesionless, what is the angle of internal friction of this sand? (b) If a second test is conducted at a vertical normal force of 140 lb, what would be the anticipated maxi- mum horizontal shear force T?
Transcribed Image Text:A sample of sand is tested in a direct shear device to determine its angle of internal friction. Cross-sec- tion dimensions of the shear box are 2.5" by 2.5". The sample is tested at a vertical normal force N of 100 lb and resulted in a maximum horizontal shear force T of 70 lb. (a) Assuming the sand is cohesionless, what is the angle of internal friction of this sand? (b) If a second test is conducted at a vertical normal force of 140 lb, what would be the anticipated maxi- mum horizontal shear force T?
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