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Constant head
- 1. ASTM D 2434 Constant Head Permeability Test CIVE 310 Soil Mechanics Civil, architectural, & Environmental Engineering Department Drexel University
- 4. Purpose and Significance Purpose: Determine the permeability, k, (hydraulic conductivity) of soils by appropriate test method. Significance : Permeability is necessary for the calculation of seepage through earth dams or under sheet pile walls, the calculation of the seepage rate from waste storage facilities (landfills, ponds, etc.), and the calculation of the rate of settlement of clayey soil deposits.
- 6. Typical Soil Permeability The constant head test method is used for permeable soils (k>10 -4 cm/s), and the falling head test is mainly used for less permeable soils (k<10 -4 cm/s).
- 7. Test Apparatus Permeameters Ruler Tamper Balance Watch (or Stopwatch) Thermometer Filter