Operation
Settlement Cell
Slope Indicator’s settlement cells have three main components:
a pressure transducer, a liquid-filled tube, and a reservoir. Settlement
cells are available in pneumatic and VS versions.
The pressure transducer, with liquid-filled tube attached, is embed-
ded in fill. The other end of the tube is terminated at the reservoir.
The reservoir should be located at a higher elevation on stable
ground. The tube acts as a column of liquid, and the transducer at
the bottom of the tube measures the pressure created by the height of
the column.
The transducer settles with the surrounding soil, effectively increas-
ing the height of the column of liquid and the pressure on the trans-
ducer. Settlement is calculated by finding the change in pressure and
converting it to feet or meters of liquid head.
Advantages
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Readout station is remote from work area and does not interfere
with construction activity.
Limitations
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Pneumatic type: Slow readout with long lengths of tubing
(30 minutes for 500 m of tubing). Difficult to automate.
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Fluid must be added to reservoir regularly.
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Trenching required to route liquid-filled tubes to readout station.
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Affected by temperature changes since density of the liquid in-
creases in colder temperatures. Cannot be allowed to freeze (but
US type uses 50/50 water - ethylene glycol mix).
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Precision leveling survey required if reservoir is not located on
stable ground.
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Optional back-pressure unit may be required for best results.
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.
