Saturating
Low Air Entry Filters
Immerse the filter in clean water for approximately 15 minutes.
Gently tap the filter to remove air bubbles. If the piezometer is sup-
plied with a non-removable sintered filter, immerse the entire
piezometer and follow same procedure.
Saturating
High Air Entry Filters
Immersion Method: Prepare deaired water. Stopper the ends of the
filter so that water can act only on the outside of the filter. Allow air
to vent through the stopper at the top of the filter, as shown in the
drawing. Immerse filter for approximately 24 hours.
Vacuum Method: This method probably provides the most com-
plete saturation. The filter is placed in a chamber and a vacuum is
applied. The chamber is then slowly flooded with deaired water. As
the water level rises, any remaining air is driven out of the filter.
Once saturated, the filter should be attached to the piezometer
under water, and the assembled piezometer should be bagged in
deaired water to maintain saturation until installation.
Preparing Deaired Water
Water can be deaired by boiling it with heat or by applying a
vacuum at room temperature. The Nold DeAerator from the Walter
Nold Company combines propeller cavitation with a vacuum to
deair water rapidly. No heat is applied, so the deaired water is
immediately usable.
Piezometers
Rembco Geotechnical Contractors specializes in
slope stabilization,
soil nail wall,
foundation repair
and support,
grouting,
shoring,
micropile
construction,
rock drilling, and we remediate
sinkholes. We use a
problem-solving approach in the geotechnical portions of buildings, bridges, water plants, sewage plants, tunnels,
installing caisson bottom, and roads. We are experienced in these applications:
micro piles,
sinkhole repair,
permeation and
pressure
grouting,
soil nails,
cement grouting,
chemical grouting,
micropiles,
compaction grouting, and
rock anchors.
Rembco techniques apply when adding new structures: especially
rock anchor,
microfine cement,
soil nailing, and
micropile
installations for foundation support. Our specialties are
soil nails,
rock anchor,
chemical and
compaction grouting,
mini piles,
sinkhole repair,
micropiles, and
soil nailing.
