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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
Table of Contents
vi
CALTRANS FOUNDATION MANUAL
List of Figures
Figure 4-1
Footing Retrofit (add top mat of rebar) ................................................................................4-2
Figure 4-2
Footing Retrofit (increase footing size and add top mat of rebar) ......................................4-3
Figure 4-3
Loaded Footing with Moment ...............................................................................................4-4
Figure 4-4
General Shear Failure Concept .............................................................................................4-6
Figure 4-5
Punching Shear Failure ........................................................................................................4-6
Figure 4-6
Local Shear Failure ...............................................................................................................4-7
Figure 4-7
Failure Modes ........................................................................................................................4-7
Figure 4-8
Surcharge Load on Soil .........................................................................................................4-9
Figure 4-9
Bearing Capacity Factors for Granular Soils ......................................................................4-10
Figure 4-10 Bearing Capacity Factors for Cohesive Soils .......................................................................4-11
Figure 4-11 Slope Setback.......................................................................................................................4-15
Figure 4-12 Surcharge Loads for Shored Excavations ...........................................................................4-17
Figure 4-13 Setback Calculations for Shored Excavations.....................................................................4-18
Figure 4-14 Single Stage Well Point System ...........................................................................................4-19
Figure 4-15 Saturated vs. Submerged Unit Weight ................................................................................4-20
Figure 4-16 Bottom of Excavation Stability Problems due to Excess Hydrostatic Head
Against an Impervious Layer .........................................................................................4-21
Figure 6-1
Auger - Short Section ...........................................................................................................6-2
Figure 6-2
Auger - Single Flight ............................................................................................................6-3
Figure 6-3
Auger - Double Flight...........................................................................................................6-3
Figure 6-4
Drilling Bucket ......................................................................................................................6-4
Figure 6-5
Drilling Bucket/Cleanout Bucket Comparison .....................................................................6-5
Figure 6-6
Core Barrel.............................................................................................................................6-5
Figure 6-7
Drill Rig - Crawler Mounted ................................................................................................6-6
Figure 6-8
Drill Rig - Truck Mounted....................................................................................................6-6
Figure 6-9
Drill Rig - Crane Mounted ...................................................................................................6-6
Figure 6-10 Steel Casing ...........................................................................................................................6-7
Figure 6-11 Pile Defects - No Cleanout, Tapered Bottom of Hole .........................................................6-12
Figure 6-12 Pile Defects - Smeared Drill Cuttings.................................................................................6-12
Figure 6-13 Pile Defects - Cave In..........................................................................................................6-14
Figure 6-14 Pile Defects - Concrete Segregation ...................................................................................6-14
Figure 6-15 Pile Defects - Adjacent Hole Blowout .................................................................................6-15
Figure 6-16 Pile Defects - Water in the Hole ..........................................................................................6-15
Figure 6-17 Pile Defects - Casing Problems ..........................................................................................6-17
Figure 7-1
Early Pile Hammer ................................................................................................................7-2