SOIL PERMEABILITY APPARATUS WITH TANK (CONSTANT HEAD AND FALLING HEAD PERMEABILITY APPARATUS):
AS PER IS: 2720 (Part XBII) - 1966.
Introduction:
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In soil machines Permeability is one of the important Engineering properties, as it governs rate of settlement of saturated compressible soil layer and rate of flow of equifer.
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Permeability is that property of soil which permits flow of water through its interconnecting voids.
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The instrument to measure permeability is called permeameter.
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The results are used for pumping ground water, for foundation sites excavations, design of dams etc.
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Tests can be performed on remoulded or undisturbed samples using constant head or falling head method.
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The apparatus is used for the laboratory determination of permeability of soils using a constant or a variable head.
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This test is recommended for soils with co-efficient of permeability in the range of 10-3 to 10-7cm/sec.
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The maximum particle size of the soil which can be tested in the mould is 10 mm.
General Description and Specifications:
For determination permeability studies of soil consists of: The equipment comprises one each Consists of
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Gun metal mould 100 mm dia x 127.3 mm height x 1000 ml volume.
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Gunmetal mould Extension color: 100 mm dia. x 60 mm high.
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Gunmetal Drainage base plate with a recess for porous stone and with an outlet valve.
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Metallic clamping ring.
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Drainage cap (top plate with a recess for porous stone and fitted with an inlet valve and air release valve)
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Gunmetal Dummy plate to serve as a false bottom during compaction.
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Set of porous stone for base and top plate.
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Set of three glass stand pipes approx 6 mm, 10 mm and 20 mm dia. mounted on a wooden base stand.
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Each glass tube is longer than 1 meter and has a serrated end at the bottom.
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To read water head 2 Nos. meter scales are fixed between the tubes.
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Rubber tube with pinchcock is provided.
Accessories :-
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Over head tank made of G.I. Sheet with six outlets at bottom and inlet port on top.
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Rammer 2.6 kg x 310mm controlled fall.
Note: over head tank Stand is not in our scope of supply it will charge extra.