City of Wilmington Slip Line Project
Wellington Avenue ~ Wilmington, NC
Pomona Pipe Products supplied 230 LF – 65” dia. Aluminum Ultra Pipe with Internal Flange Joints to slip line an existing 72” diameter smooth flo CMP pipe. The existing 72” pipe which traveled underneath a city street and gas station parking lot had begun to corrode in the invert, and the joints were failing allowing soil to enter into the pipe causing sink holes above ground. A small section of the existing pipe had major deflection issues which would inhibit the passage of the new liner pipe. This area was used as the entry pit to inset the new liner pipe in both directions. The annular space between the existing host pipe and new Aluminum Ultra Flo liner pipe were grouted using the internal grout ports that were fabricated into the liner pipe.