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Tiebacks are steel bars equipped with an anchoring
device drilled through the soil past its failure plane into
unaffected soil that has the capacity, like rock, shale, etc, to
withstand the desired load. Tiebacks are commonly used to help
support and stabilize a foundation. Tiebacks are used in both
temporary and permanent structures.
The first step in using tiebacks is to drill the holes the
desired depth and in the desired diameter. The steel bar is then
placed into the hole, and an initial amount of grout is pumped into
the hole to stabilize the steel bar. Testing should then be done to
make sure that the steel bars will support the appropriate amount.
Once testing is confirmed, more grout should be pumped into the hole
to ensure proper stabilization.
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