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Product Overview

Description

 

casagrande tip/porous filter tip/water leve filter

 

 

Product Name

Porous Filter Tip

Application

Simple and economic measurement of groundwater pressures in soil and rock can be carried out using Casagrande type piezometers. Typical application include:

 

Monitoring of dams, reservoirs & embankments

Slope stability

Groundwater levels for dewatering & drainage

Groundwater sampling

Permeability testing

Contaminated soil monitoring

 

Geovan Porous Filter Tip is made up of low air entry porous plastic elements which are connected to standpipe tubing and lowered into a predrilled borehole. Alternative types may be driven or pushed into soft soil.

 

 

Where Casagrande type piezometers are being installed then the porous element is surrounded

by filter sand and a Bentonite seal placed above this response zone.

 

Water level measurements are normally taken using a water level meter (dipmeter) or in the

case of artesian pressure a Bourdon pressure gauge is attached to the top.

 

Description

Diameter (mm)	Length (mm)
OD 32	400
OD 38	400
OD 48	400