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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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Tiebacks, Tiedowns, and Soil Nails
JULY
1997
11-7
Performance Tests
A Performance test involves incremental loading and unloading of a production anchor to
accurately verify that the design load may be safely carried, that the free length is as
specified, and that the residual movement is within tolerable limits. As a minimum, the
first two production anchors installed should be Performance tested. Do not wait until
many anchors are installed before testing the first two anchors. The purpose of these tests is
to verify the installation procedure selected by the Contractor before a large number of
anchors are installed. Each load increment or decrement shall be held constant for at least
one minute or until measured de.ection is negligible. The maximum load should gener-
ally be held for one hour to determine long-term creep susceptibility. As was stated earlier,
the contract plans and/or Special Provisions should specify the number of Performance
tests be performed at each location.
Proof Tests
A Proof test involves incrementally loading a production anchor to verify that the design
capacity can be safely carried and that the free length is as specified. The Proof test is a
single cycle test where the load is applied in increments until the maximum load value is
reached. Each load shall be held constant for at least one minute or until measured
de.ection is negligible.
General Acceptance Criteria
CRITERIA
DESCRIPTION
1
The deflection at the anchor head should exceed 80% of the theoretical free
length elongation for any test load.
2
The total deflection measured at the maximum test load does not exceed
the theoretical elongation of a tendon length.
3
The creep movement does not exceed 0.08 inch during the final log cycle of
time.