The following are results of a constant head permeability test with the bubble tube.device: Inside diameter of specimen tube Height of specimen tube Inside diameter of reservoir tube 100 mm %3D 115 mm %3D 100 mm %3D Outside diameter of bubble tube 15 mm 1390 g Weight of dry sand Specific gravity, G, Head difference, H %3D 2.60 %3D %3D 123 mm 43.6 cm Initial height of water in reservoir tube Final height of water in reservoir tube %3D 31.3 cm %3D Time of water flow in the reservoir tube 4.25 minutes %3D Determine: G.p (a) -1 if needed. Pa Void ratio, e of the soil. You may use e = (b) Rate of flow, q. Hydraulic conductivity, k. You may use q= kiA if needed.
The following are results of a constant head permeability test with the bubble tube.device: Inside diameter of specimen tube Height of specimen tube Inside diameter of reservoir tube 100 mm %3D 115 mm %3D 100 mm %3D Outside diameter of bubble tube 15 mm 1390 g Weight of dry sand Specific gravity, G, Head difference, H %3D 2.60 %3D %3D 123 mm 43.6 cm Initial height of water in reservoir tube Final height of water in reservoir tube %3D 31.3 cm %3D Time of water flow in the reservoir tube 4.25 minutes %3D Determine: G.p (a) -1 if needed. Pa Void ratio, e of the soil. You may use e = (b) Rate of flow, q. Hydraulic conductivity, k. You may use q= kiA if needed.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The following are results of a constant head permeability test with the bubble tube device:
100 mm
Inside diameter of specimen tube
Height of specimen tube
Inside diameter of reservoir tube
rers
115 mm
100 mm
Outside diameter of bubble tube
15 mm
1390 g
Weight of dry sand
Specific gravity, G,
Head difference, H
2.60
123 mm
43.6 cm
Initial height of water in reservoir tube
Final height of water in reservoir tube
31.3 cm
Time of water flow in the reservoir tube
4.25 minutes
Determine:
G,P-1 if needed.
(a)
Void ratio, e of the soil. You may use e =
Pa
(b)
Rate of flow, q.
(c)
Hydraulic conductivity, k. You may use q= kiA if needed.
%3D
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