Question

1. Give a definition of Permeability test
2. List the Equipments and tools needed to perform the costant Head Test
3. A Test was Performed according to the following data

Volume of specimen, V = ?=??2L (cm2) .	418.03
Specific gravity of soil solids, Gs	2.66
Mass of specimen tube with fittings, (g)	238.4
Mass of tube with fittings and specimen, W2 (g) Dry density of specimen,	9653
Void ratio of specimen,	0.53
(Note: pw = 1 g/cm3)	■

If K=QL/Aht (cm/s) and Gs =2.66 , Volume of Specimen is 418.03 cm³

Determination of Coefficient of Permeability

Test No.	1	2	3
Average flow» Q (cm3)	. 368	378	398
Time of collection, t (s)	68	62.8	61.08
Temperature of water, T (°C)	25	25	25
Head difference, h (cm)	60	70	80 .
Diameter of specimen, D (cm)	6.38	6.35	6.38
Length of specimen, L (cm)	13.2	132	132
Area of specimen, A	31.67	31.67	31.67
k =
Average k =.
K20

Finid out the Magnitude of K

Mension the Source of error is this test

What is the type of soil in this test.

What are the maximum and minmum diameter of soil used In this test as you expected?

Answer 1