Piezometers

Piezometers are instruments used to measure groundwater levels and interstitial pressures in the subsurface. Essential in geotechnics, hydrogeology, and environmental monitoring, they help assess soil stability and structural safety.

There are various types of piezometers:

• Casagrande Piezometer: used to measure neutral pressure in cohesive soils, consisting of a cylindrical tube with a movable piston and a porous element at the base.

• Vibrating Wire Piezometer: uses a taut wire within a borehole; changes in the wire’s vibration frequency correlate with interstitial water pressure.

• Electric Piezometer: equipped with piezoresistive sensors, allowing precise measurements and integration with data loggers for automated monitoring.

These instruments are crucial for monitoring groundwater levels, assessing soil permeability, and real-time tracking of hydrogeological conditions.

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