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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
Tiebacks, Tiedowns, and Soil Nails
11-6
record of readings from the Performance and Proof tests shall be documented by the Contractor
and provided to the Engineer.
Specifications for tiedown anchors are generally found in the contract Special Provisions.
Tiedown anchors shall be installed in accordance with the manufacturer’s recommenda-
tions. In the case of a con.ict between the manufacturer’s recommendations and the
Special Provisions, the Special Provisions shall prevail.
Sequence of Construction
Sequence of tiedown construction is as follows:
SEQUENCE
DESCRIPTION
1
Drill the hole the required depth and diameter.
2
Install the prestressing strands or bar.
3
Place primary grout.
4
Complete Performance and Proof Tests (refer to the section on testing later
in this chapter).
5
Lock-off and stress.
6
Place secondary grout.
Note: Each step must comply with the specifications before proceeding to the next step.
Testing of Tieback and Tiedown Anchors
The specific requirements for all testing will usually be provided in the contract Special
Provisions, but the following is a general explanation of the required tests.
For both tiedowns and tiebacks, Performance tests are performed on a predetermined
number of anchors, and Proof tests are done on all of the anchors. If the systems should
fail, the contract Special Provisions provide for additional monitoring requirements. If they
do not pass at that point, the Project Designer should be consulted.