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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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Static Pile Load Testing and Dynamic Pile Monitoring
JULY
1997
CALTRANS FOUNDATION MANUAL
8-5
pile may indicate a pre-ignition problem within the hammer, inefficient hammer combus-
tion, misalignment of the follower or helmet, or the use of an inappropriate pile hammer
cushion.
During installation, damage to a pile can be detected by the PDA. The data retrieved during
the monitoring can be used to locate the depth to cracking in concrete piles and to the
point of buckling in steel piles.
Data retrieved from the PDA during the retap of a pile yields valuable information about the
soils interaction with the driven pile during a pile's "set-up" period.
Dynamic Pile Monitoring is believed to be very reliable for piles driven in granular soils. For
finer grained soils, such as silts and clays, this method is less reliable because these soils
offer significantly larger damping resistance to piles during driving that are not yet accu-
rately modeled.
Under normal circumstances, dynamic monitoring is used in conjunction with static load
testing to determine the adequacy of foundation piles.
Contract Administration of Static Pile Load Testing and
Dynamic Pile Monitoring
At the beginning of any project requiring Static Pile Load Testing and/or Dynamic Pile
Monitoring, the Structure Representative should do a thorough of review the project plans,
Special Provisions, Standard Specifications (Section 49-1.10 in particular), and Bridge
Construction Memo 130-1.0 to make themselves aware of the contract requirements.
It is the Structure Representative's responsibility to coordinate the set-up for the Static Pile
Load Testing and Dynamic Pile Monitoring. Early contact and good communication with
the Foundation Testing and Instrumentation Section is important to ensure that the process
.ows smoothly. The Contractor's schedule for the installation of the piles should be ob-
tained as early as possible. This schedule should then be forwarded to the Foundation
Testing and Instrumentation Section. Details relating to the logistical needs of the testing
work crew should also be discussed with the Foundation Testing and Instrumentation
Section and the necessary information relayed to the Contractor.
Section 49-1.10 of the Standard Specifications requires that a change order be written to
compensate the Contractor for the various forms of assistance they will need to provide for