### Discussion :: Soil Mechanics and Foundation Engineering - Section 1 (Q.No.26)

- «« Soil Mechanics and Foundation Engineering - Section 1
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- Soil Mechanics and Foundation Engineering - Section 6

Adithya said: (May 20, 2014) | |

Coefficient of compressibility is defined as ratio of change of void ratio to change of effective stress. SO it essentially has units of inverse of pressure, i.e. pa-1 |

Anand said: (Nov 18, 2016) | |

Strain by stress. Please, can anyone explain it? |

Priyansu said: (Dec 30, 2016) | |

Av (coefficients of compressibility) -----decrease in strain /stress. |

Priyansu said: (Dec 30, 2016) | |

av-----decrease strain /stress. Here Av -coefficients of compressibility. |

Vishal Babu Jaiswal said: (Jun 20, 2017) | |

It is defined as the ratio of volumetric strain to the effective stress. That means strain to stress. |

Vasanth said: (Jul 30, 2017) | |

Change in void ratio is volumetric strain and change in stress is denoted as stress. |

Ump said: (Sep 29, 2017) | |

It is 1/k. Where k=bulk modulus. |

Hemant Bhuyar said: (Dec 4, 2018) | |

I am not getting this, please Can anyone explain? |

Neru said: (Apr 28, 2019) | |

Av = (e2-e1)/(stress2-stress1) but how strain vs stress? |

Kevin said: (May 13, 2019) | |

@neru, Change in voids ratio is considered as strain. The strain is nothing but change in the dimension per unit original dimension. |

Kcube said: (Jun 16, 2019) | |

Coefficient of compressibility is the negative ratio of decrease in void ratio (i. E volumetric strain) to the increase in effective stress. Increase in load will result in a decrease in void ratio and an increase in effective stress. The graph between void ratio and effective stress will be a parabolic curve with concavity upwards. The slope of this curve i.e. void ratio (y) /effective stress (x) will be negative. Hence the negative sign which will make the coefficient positive. |

Biswajit Swain said: (Aug 26, 2019) | |

It is the ratio of change in void ratio to change in stress. As void ratio changes the volume Will also change. Hence it is the ratio of volumetric strain to stress. |

Mona said: (Dec 2, 2019) | |

Compressibility is the inverse of bulk modulus of elasticity that's why it is a strain to stress. |

Sobhan said: (Dec 11, 2019) | |

The ratio of how much strain coming to soil for unit stress is known as compressibility. |

Deep said: (Feb 24, 2020) | |

Co.eff of Compressibility is the reciprocal of young modulus. |

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