Instruments
Tape Extensometers
The Tape Extensometer consists of stainless steel reference points, a
steel tape, and a portable measuring instrument. The reference points
are permanently installed at measurement stations along the tunnel
or structure.
To obtain a reading, the operator hooks the steel tape to the far refer-
ence point and walks to the near reference point, allowing the tape to
unreel until the instrument body can be hooked to the near reference
point. The operator then tensions the tape and notes the distance be-
tween the two reference points. This procedure is repeated for the re-
maining points at the measurement station.
By comparing current readings to initial readings, the operator can
calculate the change in distance between the two reference points
and use the resulting data to plot the magnitude, direction, and rate
of movement.
Advantages
q
Compact and lightweight.
q
Rugged.
q
Easy to use and maintain.
Limitations
q
Intended for relative measurements. Should not be used as a sub-
stitute for a surveyor’s chain.
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.
