NYC Sinkhole Repaired With 120-Inch Hobas Pipe

December 2012, Vol. 67 No. 12
Hobas CCFRPM pipe is at the repair site during the sinkhole project in Brooklyn.

On June 28, a sinkhole appeared on 92nd Street near Third Avenue in Brooklyn, NY. The sinkhole, west of the sidewalk, caused 11 families to be evacuated from the nearby Bay Ridge apartment building. The block of 92nd Street between Third Avenue and Ridge Boulevard was closed to traffic as emergency crews from the city’s Department of Environmental Protection inspected the sinkhole. Crews worked to stabilize the 70-foot deep sinkhole and began planning a repair.

Hobas Pipe USA was contacted regarding the availability of pipes suitable for the repair. The next day, Hobas advised that 120-inch diameter, 46-psi stiffness class pipe was available for immediate shipment. Within one day of receiving the purchase order, Hobas shipped the pipe to the jobsite. Although Hobas pipes are custom manufactured for specific projects, it is not uncommon that existing inventory can be utilized for emergency projects.

Installation crews placed the pipe, finalized repairs and returned the sewer to service. A study of the current infrastructure was conducted.

The fiberglass pipes will provide a long-term structural and corrosion resistant repair to the sewer. Hobas fiberglass pipes ranging in diameter from 18 to 126 inches have been used across the country for sliplining for over 25 years.

Hobas Pipe at Verrazano Narrows Bridge.jpg
Fiberglass pipe, 120 inches in diameter, was delivered to the project site in Brooklyn (Verrazano-Narrows Bridge in Background) within days of placing the emergency order.

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