Porous Tube Viscometer

The Porous Tube Viscometer are used to monitor viscometer water levels. Observation wells are used to monitor ground water levels. Water level readings are typically obtained with a water level indicator. This is a device for measuring pore water pressures primarily in a foundation though it can also be used to measure pore pressure in an embankment. It is more sensitive to foundation pressures or ground water fluctuations and is more resistant to plugging due to silting than the conventional observation well which it replaces. The porous tube Piezometers may not indicate the correct pressures where sufficient flow of water into the standpipe of the Piezometers is not available as in partially saturated soils. This is a porous tube of annular cross-section, 37 mm outer dia x 6 mm wall thickness and available in two sizes 12 Inch & 24 Inch long. The porosity of the porous tube is chosen according to site conditions. Unless specifically requested, the porous tube filter has a grain size of 60 micron.

Applications

• Hydrological investigation.
• Monitoring pore-water pressure to determine the stability of slopes, embankments, and landfill dikes.
• Monitoring ground improvement techniques such as vertical drains, sand drains, and dynamic compaction.
• Monitoring dewatering schemes for excavations and underground openings.
• Monitoring seepage and ground water movement in embankments, landfill dikes, and dams.
• Monitoring water draw down during pumping tests