Core Drilling Below Ground

When a local contractor needed both power and precision to complete a difficult concrete cutting project, Aggregate Technologies Inc. provided the solution.

ATI recently conducted two separate mobilizations at the Almeda Sims Wastewater Treatment Plant, both of which required lowering concrete cutting and drilling equipment into separate work areas 30 and 40 feet below ground.

ATI's core drilling expertise was on display, as concrete cutting technicians cored a manway access hole through five and a half feet of existing heavily reinforced concrete slab, that was inside an 30 feet deep existing concrete vault, to provide access to an existing wet well. Skilled technicians drilled a 30 inch diameter hole down through the slab, which was comprised of two layers. ATI equipment operators also over-drilled a 42" x 6" hole to create a ring around the top perimeter to accommodate a manhole cover.

The other Almeda Sims mobilization required sawing a ten foot diameter concrete pipe in half lengthwise, so the top half could be lifted away from the remaining pipe. To avoid cutting into the liner pipe, ATI deployed a wall saw. This advanced tool was used to make 20 four foot incisions along each side of the pipe at a depth of 11 inches. Subsequently, the crew used hand saws and ring saws to connect the two side cuts in three places, breaking the top half of the pipe into three pieces for removal.

ATI completed the concrete coring work safely and meticulously, leaving behind a clean work area. The Almeda Sims Wastewater Treatment Plant project demonstrates once again why Aggregate Technologies, Inc. is the right partner for sophisticated concrete cutting and drilling projects.

Photos