![Constant head permeability tests were performed on two soil specimens, S1 and S2. The ratio of height of the two specimens (LS1:LS2) is 1.5](https://www.gkseries.com/blog/wp-content/uploads/2023/08/Constant-head-permeability-tests-were-performed-on-two-soil-specimens-S1-and-S2.-The-ratio-of-height-of-the-two-specimens-LS1-LS2-is-1.5.jpg)
Q. Constant head permeability tests were performed on two soil specimens, S1 and S2. The ratio of height of the two specimens (LS1:LS2) is 1.5, the ratio of the diameter of specimens (DS1:DS2) is 0.5, and the ratio of the constant head (hS1:hS2) applied on the specimens is 2.0. If the discharge from both the specimens is equal, the ratio of the permeability of the soil specimens (kS1:kS2) is
Solution:
For constant head permeability test,
k=Q/Lah
Q → discharge
L → length of specimen
a → area of cross-section of specimen
h → constant head
Given,
![](https://www.gkseries.com/blog/wp-content/uploads/2023/08/Screenshot-477.png)