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Micro Piles |
Pressure Grouting |
Rock Anchors |
Permeation Grouting
Soil Nailing |
Compaction Grouting |
Micropiles |
Injection Grouting |
Chemical Grouting
Our
techniques apply when adding new structures:
especially
rock anchor,
microfine cement,
soil nailing,
micropile
installations for
foundation support.
We
specialize in
slope stabilization,
anchors,
permeation grouting,
foundation repair
and support,
grouting,
soil nails,
rock drilling,
micropile installations, and
sinkholes. We
use a
problem-solving approach geotechnical
architecture of buildings, bridges,
water plants, sewage plants, tunnels,
sinkholes,
caisson,
shoring,
underpinning,
agriculture, and
roads
construction. We
are experienced in these applications:
micro piles,
sinkhole repair,
permeation grouting, pressure
grout,
soil nails,
chemical grouting,
micropiles,
compaction grout, and
rock anchors.
Our specialties are
rock anchor,
acrylamide and
compaction grouting,
mini piles,
sinkhole repair,
micropiles,
acrylamide grouting, and
soil nailing.
We will continue to dedicate ourselves to
excellence,
including
insurance mortgage, in our performance, in our
integrity, and in our relationships with our
customers. We will carefully weigh our
decisions, actions, and results to make sure
that we remain the most trusted name in the
geotechnical contracting industry. Please
visit our website
http://www.rembco.com/.
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JULY
1997
Cast-In-Drilled-Hole Piles
6-10
CALTRANS FOUNDATION MANUAL
should also evaluate the material encountered and compare it to that shown on the Log of
Test Borings. If the material at specified tip differs from that anticipated, a change may be
needed. It may be advisable to keep a written record of the drilling progress and the record
utilized to investigate any differing site conditions claims submitted by the Contractor.
When the hole has been drilled down to the specified tip elevation, the Contractor should
always use a cleanout bucket to remove any loose materials and to produce a firm flat
surface at the bottom of the drilled hole.
After drilling, the depth, diameter and straightness of the drilled hole must be checked. The
drilled hole should be checked using a suitable light, furnished by the Contractor, or a
mirror. At this time, the Structure Representative should measure and record the length of
each pile. Unless the Structure Representative orders the Contractor, in writing, to change
the specified tip elevation, no payment will be made for any additional depth of pile below
the specified tip elevation.
For large diameter piles, it may be necessary for the Structure Representative or the Engi-
neering Geologist to inspect the bearing surface at the bottom of the drilled hole. All
pertinent requirements of the Construction Safety Orders shall be met before anyone enters
the drilled hole.
Immediately before placing concrete, the bottom of the drilled hole should be checked for
loose materials or water. Loose materials and small amounts of water can be removed with
a cleanout bucket. Large amounts of water may need to be pumped out. It may be neces-
sary to remove the rebar cage to accomplish this. Steel reinforcement cage clearances and
blocking should also be checked at this time. In addition, the reinforcing cage must be
adequately supported and some means must be devised to ensure concrete placement to the
proper pile cutoff elevation.
Concrete placement warrants continuous inspection. This subject is covered comprehen-
sively in the contract specifications. Those involved in the work should thoroughly review
Standard Specifications Sections 49-4 and the contract Special Provisions. Applicable
portions of Section 90 should also be reviewed with respect to concrete mix design, consis-
tency of the concrete mix, and concrete curing requirements.