Permeability Test for Fine-Grained and Granular Soils (Falling-Head Method) - Soil Properties: Testing, Measurement, and Evaluation - page 283

Soils Testing Laboratory
Permeability Test:
Falling-Head Method

Sample No. Project No.

Location Boring No.

Depth of Sample Date of Test

Tested by

Description of Soil

[A] Unit Weight Determination

(1) Mass of permeameter (mold) with base plate and gasket attached soil

g

(2) Mass of empty permeameter with base plate and gasket attached

g

(3) Mass of soil specimen [(1) (2)] g

(4) Diameter of soil specimen, D[i.e., inside diameter of permeameter (mold)]

cm

i.e. , p D 2
4

cm 2 (5) Cross-sectional area of soil specimen c d

(6) Length of soil specimen in permeameter, L cm

(7) Volume of soil specimen [(5) (6)] cm 3

c (3) lb/ft 3

(8) Unit weight of soil specimen (air dried)

(7) 62.4

d

(9) Water content of soil specimen (air dried) %

(a) Can no.
(b) Mass of air-dried soil can g

(c) Mass of oven-dried soil can g

(d) Mass of can g

(e) Mass of water g

(f) Mass of oven-dried soil g

c ( e )

(g) Water content

( f )

100 d %

(8)

lb/ft 3

(10) Dry unit weight of soil specimen c

100 100

d

(9)

(11) Specific gravity of soil

c (10)
62.4 (11)

ft 3 (12) Volume of solids d

ft 3

(13) Volume of voids [1 (12)]

c (13)
(12)

(14) Void ratio, e, of soil specimen d

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