For a Quick Soil, the Critical Gradient is

By Aina Parasher|Updated : July 4th, 2022

A coarse-grained soil has a voids ratio 0.75, and specific gravity as 2.75. For a quick soil, the critical gradient is-

  1. 0.25
  2. 0.50
  3. 0.75
  4. 1.00

Answer: D. 1.00

For a quick soil, having void ratio 0.75 and specific gravity as 2.75, the critical gradient is 1.00


Given, e=0.75


We know that for a quick soil, the critical gradient is given by,

ic G-1/1+e = (1-n)(G-1)

ic 2.65-1/1+0.75 1.65/1.75=1.00

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