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Permeability Test Report

This document details the results of a constant head permeability test conducted according to BS-5930 (1981) to determine the permeability of soil at a depth of 12 feet below the surface using a borehole with an external casing diameter of 8.83 cm, where readings were taken over 50 minutes with a total flow of 96,200 cm3, resulting in a calculated permeability of 1.004 x 10-3 cm/sec.

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P Allen Samuel Ignatius
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756 views1 page

Permeability Test Report

This document details the results of a constant head permeability test conducted according to BS-5930 (1981) to determine the permeability of soil at a depth of 12 feet below the surface using a borehole with an external casing diameter of 8.83 cm, where readings were taken over 50 minutes with a total flow of 96,200 cm3, resulting in a calculated permeability of 1.004 x 10-3 cm/sec.

Uploaded by

P Allen Samuel Ignatius
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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FIELD PERMEABILITY TEST(Horizontal)

BS-5930 (1981)
Constant Head Permeability Test Site: Head Khanki Barrage Location:
Depth below top of casing: Job No. Borehole: BH - 22
(a) Bottom of borehole: 12 ft Date: 24-05-08 Test No: 02
(b) Bottom of casing: 11 ft Groun level: Crew/Operator: Mohsin
(c) Top of filter material: 11 ft Weather: Sunny Tested by: Adnan / Safdar
(d) Initial ground water level:6.5ft=198.12cm External diameter of casing: 8.83 cm
Height of casing above surface: 130 cm Length of filter: 30 cm
Elevation of casing: Type of soil: Sandy Silt / Silty Sand

Clock Time Elasped Time Initial Reading Final Reading Flow (cm3)
10:49:00AM 1 (1) 4700
10:50 1 (2) 5600
10:51 1 (3) 5700
10:52 1 (4) 6450
10:53 1 (5) 6550
10:55 2 (7) 7000
10:57 2 (9) 7000
10:59 2 (11) 4500
11:01 2 (13) 4500
11:03 2 (15) 3500
11:08 5 (20) 7400
11:13 5 (25) 6500
11:18 5 (30) 6000
11:28 10 (40) 10800
11:38 10 (50) 10000

Total Elapsed Time (Min) 50 (3000) Total Flow ( cm3 ) 96200

q= (Total Flow) / (Elapsed Time) 32.06 cm3/sec


F= 97.30 cm
Hc= ( Total Head in cm ) 328.12 cm
K= q/ F * Hc 1.004 x 10 -3 cm/sec

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