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Micropile / Minipile
Micropile and minipile systems are
excellent for underpinning, and are constructed using
geotechnical techniques and
conventional materials. Piles
(micro
or mini) are preferred
supports to stabilize buildings, bridges, highways,
towers, other man-made structures, etc. The names minipile
or micropile depict their sizes, i.e., 6"-12"
mini, 2"-5" micro. Minipile installations are
installed by using drilling and grouting technology. Micro and mini
installations can
also penetrate to hundreds of feet in depth; each
of the piles can support hundreds of tons.
A micropile may be reinforced with large-diameter, threaded bar (75K) to attain
the correct design load.
Support piles (both mini and micro) are often installed rather than "H" piles because of
overhead physical constraints.
Construction can be in close quarters under restricted headroom
by using simultaneous insertion of casing and drill rod,
short lengths.
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