Excavation:
Benches are cut
in lifts of typically 4-6 feet.
Nails:
Holes are drilled
into the excavated face. Each drill hole is filled with cement grout and
a nail is inserted. The grout binds the nail to the surrounding soil and
provides corrosion protection. A steel plate attached to the protruding
end of each nail helps transfer forces from the wall to the nail and
soil.
Drainage:
Horizontal and vertical drain strips are
installed onto the face to eliminate hydrostatic pressure and control
seepage.
Facing:
A facing,
constructed from shotcrete reinforced by welded wire mesh or reinforcing
bar mats, provides structural integrity. The shotcrete can be smooth
troweled for a finished appearance or sculptured for an architectural
look.
Continuing Construction:
After each lift is completed, excavation continues to the next bench and
the process is repeated to completion.
Advantages
of Soil Nailing...
-
With the
right soil and site conditions, a rapid and economical means of
constructing earth retention support systems and retaining walls.
-
Allows
foundation construction in limited areas.
-
Works
through different soil strata.
-
Constructed
from the top down.
-
Shorter
drill holes.
-
Smaller
diameter bars at shorter lengths.
-
Retaining
walls are secured laterally into the soil, eliminating piles and
foundation footers.
-
Excavation
for the building and wall construction can proceed simutaneously,
saving schedule time.
-
Not prestressed, saving labor costs and time.
-
Grouting
only once is required, saving time and labor.
-
Requires
only cohesive soil or broken rock, does not need to be anchored in
competent rock.
-
Drainage
system included eliminates hydrostatic forces on facing.
-
Hard
face shotcrete is applied and can be finish-troweled.
-
Forming
and placing concrete wall not necessary, saving time, materials,
labor.
-
Soft
facing can be applied for soil retention or slope protection.
Projects
-
Crown
Center, Kansas City, MO
-
Kaufman
Stadium, Kansas City, MO
-
Nearman
KS Water Treatment Plant
-
Howard Ln., Austin, TX
-
Home
Depot, Kansas City, MO
