Heave-Settlement Points
1
Drill borehole to a depth slightly shallower than intended depth of anchor. Flush debris from borehole.
Thread inner pipe to anchor. Grease threads of outer pipe. Then slip outer pipe over inner pipe and
thread onto anchor. Bottom of pipe has left-hand thread. Do not over-tighten outer pipe since it must
be detached from anchor later.
2
Lower anchor and pipe into borehole, adding additional sections of pipe of both sizes as necessary.
When anchor reaches bottom of borehole, push or drive outer pipe until anchor is at specified depth.
3
Clamp outer pipe at top of borehole to hold anchor in place. Then use drill rig to push inner pipe down
about 180 mm. This extends anchor prongs. Prevent rocks and other debris from entering space be-
tween inner and outer pipe.
4
Detach outer pipe from anchor with about 15 clockwise turns. Pull pipe upwards, away from anchor,
until distance between bottom of pipe and anchor is slightly greater than maximum expected settle-
ment or heave.
5
Backfill as specified. Do not allow rocks or other debris to enter between inner and outer pipe. Termi-
nate pipes as specified. If installed in fill, top of inner pipe should be optically surveyed before and af-
ter adding pipe sections. If installed in excavation, top of inner pipe should be optically surveyed be-
fore and after removing pipe sections.
Rod Extensometers
Borehole Extensometers
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.
