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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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Driven Piles
JULY
1997
7-37
Material presented in this manual and material found in other technical publications will
supplement this knowledge. However, there is no substitute for field experience. The
Engineer is well advised to look into the mechanical aspects of the pile operation when the
Contractor starts assembling the equipment and driving begins.
Even though it is usually very small, the Engineer should also be aware of the energy
adjustment needed when battered piles are driven. Since the path of the ram will follow the
slope of the pile, the stroke used to compute delivered energy must be adjusted to reflect the
vertical fall of the ram. This is simple to determine for single acting air, steam or diesel
hammers. For example, a 70 Ton pile driven with a Delmag 30 hammer will normally
require 14 blows per foot. If the pile is driven on a 1:3 batter the minimum blow count
would be increased to 15 blows per foot ((3.162/3) ¥ 14). Refer to Appendix E for an
example of this.
A similar adjustment must be made for double acting and differential hammers. However,
in determining this, compensate only for that portion of the energy attributed to the free fall
of the ram. Energy delivered by differential action or pressure imparted on the downward
stroke should remain constant.
Preparing to Drive Piles
Pile driving techniques (including solutions to problems) are normally developed with time
and experience. It is the intent here to provide some insight into the areas where problems
do exist and where they can develop, so that as many as possible can be eliminated or
resolved before they occur.
The following material is essentially a check list of what the Engineer should look for
before driving begins and while driving is underway. This list is by no means complete as
new and different problems will develop with each and every project.