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67. A strip footing is to be designed to carry a gross load of 900 kN/m at a depth of 1 m in a gravelly sand. The appropriate shear strength parameters C = 0 and с = 38°. Determine the width of the footing if a factor of safety of 3 against shear failure is to be assured. Water table is found to be at foundation level. Above the water table, the saturated unit weight is 18 kN/m3 and below the water table, the saturated unit weight is 20 kN/ m³. For = 38°, the bearing capacity factors Y are: N₁ = 49 and N = 67. Unit weight of water is 9.8 kN/m³.

67. A strip footing is to be designed to carry a gross load of 900 kN/m at a depth of 1 m in a gravelly sand. The appropriate shear strength parameters C = 0 and с = 38°. Determine the width of the footing if a factor of safety of 3 against shear failure is to be assured. Water table is found to be at foundation level. Above the water table, the saturated unit weight is 18 kN/m3 and below the water table, the saturated unit weight is 20 kN/ m³. For = 38°, the bearing capacity factors Y are: N₁ = 49 and N = 67. Unit weight of water is 9.8 kN/m³.

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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67. A strip footing is to be designed to carry a gross load of 900 kN/m at a depth of 1 m in a gravelly sand. The appropriate shear strength parameters C = 0 and 6 = 38°. Determine the width of the footing if a factor of safety of 3 against shear failure is to be assured. Water table is found to be at foundation level. Above the water table, the saturated unit weight is 18 kN/m³ and below the water table, the saturated unit weight is 20 kN/ m³. For = 38°, the bearing capacity factors are: N = 49 and N = 67. Unit weight of water q is 9.8 kN/m³.
Transcribed Image Text:67. A strip footing is to be designed to carry a gross load of 900 kN/m at a depth of 1 m in a gravelly sand. The appropriate shear strength parameters C = 0 and 6 = 38°. Determine the width of the footing if a factor of safety of 3 against shear failure is to be assured. Water table is found to be at foundation level. Above the water table, the saturated unit weight is 18 kN/m³ and below the water table, the saturated unit weight is 20 kN/ m³. For = 38°, the bearing capacity factors are: N = 49 and N = 67. Unit weight of water q is 9.8 kN/m³.
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