GATE Civil Engineering
0 votes

A multistory building with a basement is to be constructed. The top $4$ m consists of loose silt, below which dense sand layer is present up to 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 $=20 \: kN/m^3$, and bearing capacity factors $N_q=40$ and $N_y=45$. For loose silt, saturated unit weight $=18 \: kN/m^3$, $N_q=15$ and $N_{\gamma}=20$. Effective cohesion $c’$ is zero for both soils. Unit weight of water is $10 \: kN/m^3$. Neglect shape factor and depth factor.

Average elastic modulus $E$ and Poisson’s ratio $\mu$ of dense sand is $ 60 \times 10^3 \: kN/m^2$ and $0.3$ respectively.

Using factor of safety $=3$, the net safe bearing capacity (in $kN/m^2$) of the foundation is

  1. $610$
  2. $320$
  3. $983$
  4. $693$
in Others by (11.9k points)
retagged by

Please log in or register to answer this question.

Welcome to GATE Civil Q&A, where you can ask questions and receive answers from other members of the community.
Top Users Sep 2020
  1. Vishwajeet Chandra

    110 Points

  2. Milicevic3306

    10 Points

1,042 questions
95 answers
44,029 users