• Visualisation and measurement of flow through permeable media
• Dye-injector system to help show flow lines
• Clear plate glass resists abrasion and allows students to see flow patterns
• Includes pressure tappings and piezometer tubes to measure head distribution
• Plates supplied to simulate models of walls, sheet piling and dams
• Includes adjustable overflow pipes to vary the head across the models
• Self-contained, floor-standing unit – only needs water supply and drain
Experiments
• Determination of seepage beneath a structure
• Construction of flow nets and determination of
coefficient of permeability
• Flow under a sheet pile and determination of critical
seepage force at which ‘piping’ occurs
• Seepage flow under an impermeable dam
• Flow through an earth dam with and without a toe
drain
• Drawdown in horizontal flow (simulation of ground
water flow into a river or well)
• Determination of uplift pressures on structures such as
building foundations
• General studies of seepage and drainage
• Flow through a porous medium (Darcy’s law)
Essential Services
Water supply:
Clean, cold water and drain
Space needed:
2.5 m x 1.5 m of solid, level floor.
Operating Conditions
Operating environment:
Laboratory
Storage temperature range:
–25°C to +55°C (when packed for transport)
Operating temperature range:
+5°C to +40°C
Operating relative humidity range:
80% at temperatures < 31°C decreasing linearly to 50% at
40°C
Specifications
Nett dimensions and weight:
2450 mm x 700 mm x 1500 mm and 230 kg
Packed dimensions and weight:
4.14 m3 and 430 kg (approx – packed for export)
Nominal Internal Tank Dimensions:
1800 mm or 1500 mm between mesh screens x
600 mm high x 180 mm width
