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Permeability Apparatus

Model: ASI-834

As Per IS : 2720 (PART XBII)-1966

The apparatus is used for the Laboratory determination of permeability of soils using a constant or a variable -3 7 head.
 
This test is recommended for soils with co-efficient of permeability in the range of 10 to 10- cm/sec.
 
The maximum particle size of the oil whichcan be tested in the mould is 10mm.
 
Specifications:
 
The equipment comprises one each: Gun metal mould, 100 mm I.D. x 127.3mm high x 1000ml volume.
 
Gun metal mould extension collar, 100mm dia. x 60mm high for the above mould.
 
Gun metal Drainage base plate with a recess for a porous stone and with an outlet valve.
 
Metalic clamping ring.
 
Gun metal drainage cap (top plate with a recess for a porous stone and fitted with an inlet valve and an air release valve).
 
Gun metal dummy plate to serve as a false bottom during compaction.
 
Porous stone for drainage cap. Porous stone for base plate. Set of glass stand pipes approximately 6mm dia.,
10mm dia. and 20mm dia. mounted on a wooden board.
 
Each glass tube is longer than 1 meter and has a secreted end at the bottom. To read water head 2 Nos. meter scales are fixed between the tubes.
 
A length of 3 meter long rubber tubing with pinch cock is also supplied.

Detailed Description

Permeability

 

Model: ASI-855   
In soil machines Permeability is one of the important Engineering properties, as it governs rate of settlement of saturatedcompressible soil layer and rate of flow of equifer. Permeability is that property of soil which permits flow of water through its interconnecting voids.

The instrument to measure permeability is called permeameter.

The results are used for pumping ground water, for foundation sites excavations, design of dams etc.
Tests can be performed on remolded or undisturbed samples using constant head or falling head method.