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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
6-2
Specifications
The Standard Specifications describe two different types of CIDH pile. The first type is the
cast-in-drilled-hole pile. The second type is the cast-in-driven-steel-shell pile. For this type
of pile, a steel shell is driven to a specified tip elevation and bearing value. The material
within the steel shell is then removed and the steel shell is filled with reinforced or non-
reinforced concrete.
The Standard Specifications contain much of the information necessary to administer the
construction of CIDH piles. Section 49-4 contains information on the construction method
and hole drilling. Section 52 contains information on pile bar reinforcement. Section 90
contains information on the concrete mix design, transportation of concrete, and curing of
concrete used for CIDH piles.
The Special Provisions contain job-specific requirements and revised specifications. Because
the CIDH pile specifications are continually updated, it is very important that the Structure
Representative carefully review the Special Provisions and any revised specifications noted
should be discussed with the Contractor.
Drilling Equipment
The drilling auger is the most commonly used
piece of equipment for drilling holes for CIDH
piles. Augers may be used in granular and
cohesive materials.
There are two basic varieties of augers—the
standard short section (Figure 6-1) and con-
tinuous flight. Both have flights of varying
diameter and pitch.
Continuous flight augers have flight lengths
which are longer than the hole to be drilled.
They are generally lead-mounted. The power
unit is located at the top of the auger and it
travels down the leads with the auger as the
hole is drilled. Drilling is performed in one
Figure 6-1: Auger – Short
Section