Installation
General Considerations
Handling and Storage
q
Piezometers should be handled with same care given to other
precision measuring instruments. They should not be dropped on
the ground or thrown into trucks.
q
Do not allow a water-filled piezometer or saturated filter to freeze.
Tubing & Signal Cable
q
Store tubing and signal cable in a sheltered, dry place, safe from
rodents or other damage.
q
Keep tubing and signal cable free from cuts or abrasions. Do not
lay tubing or cable across roads with traffic.
q
Do not make small-radius bends and do not pull on obstructed
tubing or cable in an attempt to free it.
q
Mark tubing carefully for positive identification later. Use an
appropriate coding system. Mark tubing at frequent intervals, not just
at ends.
q
Borehole installation: Check borehole depth using a weighted
survey tape. Use colored tape to mark intended ground level on
tubing or cable. This will indicate when piezometer has been
positioned at proper depth in borehole. Put another tape mark on
tubing or cable to indicate height of drill casing above ground
level.
q
Embankment installation: Specifications sometimes require that
cable be snaked in trenches to accommodate settlement. Up to 5%
extra length may be required. There is some question whether this
practice is necessary, however. This view holds that normal forces
acting on snaked cable prevent it from slipping and therefore
snaking does nothing to accommodate settlement.
3-19
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.
