Sub Technical Inc 724-625-0008 24/7
Underground Water Control

"Fast, Efficient,
and Professional"

"They stopped water I thought
would never be stopped"

"Sub-Tech won't leave until
the job is done right"

"Response time in an
emergency is FANTASTIC"

"Their technicians were very helpful
and really know their business"

"Sub-Tech has always taken the time to
explain everything and answer my questions"

"You may as well call them first because if
you don't, you will be calling them second"

Rescuing a Turn of the Century Culvert under a New York Rail Line.

By Eric on 21-11-2019

As winter approaches, a heavy rain event proved to be “the straw which broke the camel’s back” for this turn of the century block and brick-built tunnel.

Heavy rains recently caused the loosening and partial collapse of the structure internally. Constructed of four row brick and a stone footer wall, parts of the tunnel had begun to collapse due to the weight of saturated soils. A call to Sub-Technical began the process to rehabilitate the structure. Initially the collapsed portions were injected with our PUROCK grout, immensely strong and tough, bonded the main areas of loosening and re-created a monolithic support structure through the 120ft long structure.

Following this, the entire length of the structure was blanket grouted with our HYPERFLEX water control grout, this in addition to the structural repair filled all voided and soft areas while waterproofing the entire structure for future protection. As a final act Sub-Technical also treated the mouth of the sinkhole which developed at the surface with our soils conditioning grout, to secure and rehabilitate it.

Finally, a structurally sound, water proof culvert, which will still be standing securely in a further one hundred years, thanks to the expertise and materials from Sub-Technical Inc.