(i) A multistory building with a basement is to be constructed. Top 4 m consists of loose silt, below which dense sand layer is present upto a great depth. Ground water table is at the surface. The foundation consists of the basement slab of 6 m width which will rest on the top of dense sand as shown in the figure. For dense sand, saturated unit weight = 20 kN/m³ and bearing capacity factors N₁ = 40 and N₁ = 45. For loose silt, saturated unit weight = 18 kN/m³, N = 15 and N, = 20. Effective cohesion C is zero for both soils. Unit weight of water is 10 kN/m³. Neglect shape factor and depth factor. Average elastic modulus E and Poisson's ratio of dense sand is 60 × 103 kN/m² and 0.3 respectively. 9 Ground surface X 4 m Loose silt] Basement foundation slab 1 6 m * Loose silt Dense sand

(i) A multistory building with a basement is to be constructed. Top 4 m consists of loose silt, below which dense sand layer is present upto a great depth. Ground water table is at the surface. The foundation consists of the basement slab of 6 m width which will rest on the top of dense sand as shown in the figure. For dense sand, saturated unit weight = 20 kN/m³ and bearing capacity factors N₁ = 40 and N₁ = 45. For loose silt, saturated unit weight = 18 kN/m³, N = 15 and N, = 20. Effective cohesion C is zero for both soils. Unit weight of water is 10 kN/m³. Neglect shape factor and depth factor. Average elastic modulus E and Poisson's ratio of dense sand is 60 × 103 kN/m² and 0.3 respectively. 9 Ground surface X 4 m Loose silt] Basement foundation slab 1 6 m * Loose silt Dense sand

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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