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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
Footing Foundations
4-20
A single or multiple stage well point system is effective in fine to medium granular soils or
soils containing seams of such material. In stratified clay soils, vertical sand drains (auger
holes backfilled with sand) may be required to draw water down from above the well points.
Another system for lowering the water table is a deep well. Deep wells consist of either a
submersible pump, turbine or water ejector at the bottom of 6 to 24 inch diameter casings,
either slotted or perforated. The units are screened but filter material should be provided in
the well to prevent clogging and loss of fines.
Deep wells are spaced 25 to 120 feet apart and are capable of lowering a large head of water.
They can be located a considerable distance from the excavation and are less expensive
than the multiple stage well point system for dewatering large areas.
If a soft clay strata overlying sand is encountered and dewatering is contemplated, the
Structure Representative is cautioned that lowering the water table by pumping from
underlying layers of sand may cause large progressive settlement of the clay strata in the
surrounding area. This is due to consolidation of the saturated clay below the lowered water
table caused by an increase in the effective pressure acting on the saturated clay, i.e., density
of clay above the lowered water table will increase from a submerged unit weight to a
saturated unit weight, an increase of 62.4 Pounds per Cubic Foot (PCF) (Figure 4-15).
Figure 4-15: Saturated vs. Submerged Unit Weight