Geology Reference
In-Depth Information
Soils Testing Laboratory
Permeability Test:
Falling-Head Method
3
SR 1820
Sample No.
Project No.
Southport
B-6
Location
Boring No.
4 ft
5/27/08
Depth of Sample
Date of Test
John Doe
Tested by
Light brown sand with some mica
Description of Soil
[A] Unit Weight Determination
(1)
Mass of permeameter (mold) with base plate and gasket attached soil
3,401.1
g
(2)
Mass of empty permeameter with base plate and gasket attached
1,098.5
g
2,302.6
(3)
Mass of soil specimen [(1) (2)]
g
(4)
Diameter of soil specimen, D[i.e., inside diameter of permeameter (mold)]
10.16 cm
i.e. , p D 2
4
81.07
cm 2
(5)
Cross-sectional area of soil specimen
c
d
15.80
(6)
Length of soil specimen in permeameter, L
cm
1,280.9 cm 3
(7)
Volume of soil specimen [(5) (6)]
c (3)
112.2 lb/ft 3
(8)
Unit weight of soil specimen (air dried)
(7) 62.4
d
1.10 %
(9)
Water content of soil specimen (air dried)
(a) Can no. 3-C
(b) Mass of air-dried soil
308.17 g
can
305.40 g
(c) Mass of oven-dried soil
can
(d) Mass of can 53.60 g
(e) Mass of water 2.77 g
(f) Mass of oven-dried soil
251.80 g
c ( e )
1.10
(g) Water content
( f ) 100
d
%
(8)
111.0
lb/ft 3
(10)
Dry unit weight of soil specimen
c
100 100
d
(9)
2.71
(11)
Specific gravity of soil
(10)
62.4 (11)
0.6564 ft 3
(12)
Volume of solids
c
d
0.3436
(13)
Volume of voids [1
(12)]
ft 3
c (13)
(12)
0.523
(14)
Void ratio, e, of soil specimen
d
279
 
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