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a) In a deposit of normally consolidated sand, 6 m thick, the average SPT N value is 16. The water table is at ground level and the unit weight (weight density) of sand is 18 kN/m³. Determine the allowable bearing pressure of this sand for spread foundations.

a) In a deposit of normally consolidated sand, 6 m thick, the average SPT N value is 16. The water table is at ground level and the unit weight (weight density) of sand is 18 kN/m³. Determine the allowable bearing pressure of this sand for spread foundations.

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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Question 3 a) In a deposit of normally consolidated sand, 6 m thick, the average SPT N value is 16. The water table is at ground level and the unit weight (weight density) of sand is 18 kN/m³. Determine the allowable bearing pressure of this sand for spread foundations. b) Determine the size of a square pad foundation to support a central column load on a stiff clay with a characteristic shear strength Cuk = 95 kPa. Assume undrained conditions for the characteristic loads GK=1450 kN and Qk=350 kN. Adopt DA 1 - Combination 2 for the design with partial factors: YG=1.0, YQ=1.3, Ycu=1.4 and YR=1.0.
Transcribed Image Text:Question 3 a) In a deposit of normally consolidated sand, 6 m thick, the average SPT N value is 16. The water table is at ground level and the unit weight (weight density) of sand is 18 kN/m³. Determine the allowable bearing pressure of this sand for spread foundations. b) Determine the size of a square pad foundation to support a central column load on a stiff clay with a characteristic shear strength Cuk = 95 kPa. Assume undrained conditions for the characteristic loads GK=1450 kN and Qk=350 kN. Adopt DA 1 - Combination 2 for the design with partial factors: YG=1.0, YQ=1.3, Ycu=1.4 and YR=1.0.
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