HSC – Technical Specifications – Soil Permeability Apparatus
1. Type:
Constant Head and Falling Head Permeability Apparatus (as per soil type and permeability range)
2. Application:
Used to determine the coefficient of permeability of fine-grained and coarse-grained soils
Suitable for laboratory and field soil testing
3. Conforming Standards:
IS: 2720 (Part XVII) / ASTM D2434
4. Permeameter Mould:
Material: Brass / Gunmetal / Stainless steel
Dimensions: 100 mm diameter × 127.3 mm height (typical)
Volume: Approx. 1000 mL
End pieces fitted with porous stones and drainage base plate
5. Measuring Cylinder:
Borosilicate glass
Capacity: 100 mL – 1000 mL (graduated for accurate measurement)
6. Head Tank (for Constant Head Test):
Made of acrylic or brass with overflow arrangement to maintain constant head
Fitted with inlet/outlet valves and connecting tubing
7. Stand and Frame:
Rigid metallic or powder-coated frame for firm mounting of the permeameter and head tank
8. Piping and Connections:
Flexible PVC or rubber tubing with leak-proof joints
Flow control valves for accurate head adjustment
9. Falling Head Apparatus (optional setup):
Stand with burette or glass tube (graduated 0–50 cm) for head measurement
Suitable for fine-grained soils like silts and clays
10. Accessories:
Porous stones (top and bottom)
Filter paper discs
Drainage base plate
Funnel, rubber tubing, and clamps
11. Test Range:
Permeability coefficient range: 10⁻⁷ to 10⁻² cm/sec (depending on soil type)
12. Power Supply:
Not required (manual operation)
13. Optional Features:
Digital timer for flow measurement
Data recording unit for permeability calculation
Multiple cell setup for simultaneous testing
