Charlotte-Mecklenburg
Utilities (CMU) has an on-going program to rehabilitate or replace aging sewers
within their system and has enlisted the services of USI to produce plans for
several sewer replacement projects. Replacement of these sewer lines reduces
overflows at manholes, reduces storm water infiltration and inflow into the
sanitary sewer system, and reduces maintenance costs of upkeep for both force
mains and gravity lines.
Selected sanitary sewer lines are investigated by CMU using a closed circuit television camera that indicates root infiltration, grease buildup, joint separation, and other maintenance needs. Many of these sewer lines are rehabilitated using trenchless methods of construction, but some lines must be repaired or replaced using open-cut construction. USI receives proposed open-cut projects from CMU and provides survey, design, specifications, and permits as needed. Projects have ranged in size from the recent gravity sewer replacement project completed for the McAlpine Creek North Branch Outfall sewer replacement (2,300 linear feet of 15” diameter pipe upgraded to 18” pipe), to smaller, one-segment sewer replacements at Leroy Street, Clement Avenue, and Denver Street/Alleghany Avenue.
Recent projects have also included the proposed replacement of the Washam Street force main located within the Town of Cornelius. Numerous breaks along the 2,500 linear feet cast iron main required replacement with new ductile iron pipe within the street right-of-way and off street right-of-way at the pump station.
Selected sanitary sewer lines are investigated by CMU using a closed circuit television camera that indicates root infiltration, grease buildup, joint separation, and other maintenance needs. Many of these sewer lines are rehabilitated using trenchless methods of construction, but some lines must be repaired or replaced using open-cut construction. USI receives proposed open-cut projects from CMU and provides survey, design, specifications, and permits as needed. Projects have ranged in size from the recent gravity sewer replacement project completed for the McAlpine Creek North Branch Outfall sewer replacement (2,300 linear feet of 15” diameter pipe upgraded to 18” pipe), to smaller, one-segment sewer replacements at Leroy Street, Clement Avenue, and Denver Street/Alleghany Avenue.
Recent projects have also included the proposed replacement of the Washam Street force main located within the Town of Cornelius. Numerous breaks along the 2,500 linear feet cast iron main required replacement with new ductile iron pipe within the street right-of-way and off street right-of-way at the pump station.
