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Drilled
Foundations / Micropiles
 Drilled foundations include augercast piles, drilled shafts
(caissons), and micropiles. Augercast piles use a continuous
flight, hollow stem auger to drill the pile in one pass. The
pile is backfilled with grout through the hollow stem while
retracting the auger. Thatcher has been drilling augercast
piles for over 20 years now. We can drill more than 100' deep
and 24" diameter. We have also installed low headroom
augercast piles. Micropiles are high capacity, small diameter piles, drilled
into place and pressure grouted to transfer the load from
the steel to the ground. We have innovated the field of micropiles
by offering full length single pass drilling in addition to
using small micropile rigs.
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Driven
Piling
 Thatcher is the clear leader in pile driving in the Chicago
area. We have hammers of all types and sizes to suit any application.
We have driven up to 140-foot piles in one piece. We drive
steel H beams, pipe piles, wood piles, and pre-stressed concrete
piles. We use air hammers, diesel hammers, hydraulic impact
hammers and hydraulic vibratory hammers. We are experts in
load testing and all types of dynamic analysis, including
Wave Equation Analysis (WEAP), the Pipe Driving Analyzer (PDA),
and acquiring and interpreting useful CAPWAP results. |
Earth Retention Systems
 Thatcher provides all types of earth retention to support
excavation, including sheet piling, soldier beams and lagging,
secant pile walls, soil anchors, tie backs, and soil nailing.
Thatcher can provide fully engineered solutions from an in-house
licensed Structural Engineer. We are most cost effective when
included early in the design of a project in order to provide
our design-build expertise. We have extensive experience with
the permitting process in Chicago and can provide valuable
assistance. We also have many years of experience in the underpinning
of adjacent structures, typically using jacked piles. |
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Marine
Construction
 Thatcher provides construction/rehabilitation of cellular
cofferdams, dock walls, revetments, breakwaters, jetties, shore
protection, timber or synthetic fendering systems, and dredging.
Whether working from land or by barge, we have the experience
and equipment to handle difficult jobs in difficult weather. |
Special
Projects
 Thatcher has highly-specialized equipment and procedures
to meet difficult requirements such as low headroom, low noise,
or low vibration. We can install sheeting or H beams with
a hydraulic press, thereby minimizing vibration. We have other
custom-made tools for
jacking, drilling, and driving that excel in limited
access situations.
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