Project Spotlight

Take a closer look at one of our completed projects, including the work performed, project highlights, and the solutions our team delivered.

Underground Pipe Repair Beneath an Existing Sidewalk

Pipe connection with protective wrapping in the excavation

Project Overview

An underground leak had washed soil away beneath an existing slab. Clendaniel Contracting’s crew exposed the damaged piping and worked through an unexpected connection beneath the adjacent sidewalk.

As excavation continued, the crew uncovered an unfamiliar coupling and a short section of existing pipe. Rather than assuming the connection was a standard bell end, they removed the exposed section for a closer look and consulted the supply house before continuing the repair.

Working Through Existing Conditions

The crew traced the connection back to ductile-iron pipe and installed new piping. The work also included protective wrapping around the new metal pipe and a concrete support behind the 90-degree bend.

Accessing the connection from the excavation allowed the crew to work beneath the sidewalk without removing it at that stage of the repair.

Project Highlights

  • Exposed damaged underground piping and investigated an unexpected existing connection.
  • Installed new ductile-iron piping with protective wrapping.
  • Placed concrete support behind a change in direction.
  • Filled the void beneath the slab with slurry and backfilled the exterior excavation.

Slurry Placement and Backfill

To complete the work, the crew cut an access opening and placed slurry beneath the building slab to fill the void left by the washout. They filled the excavation around the repair and backfilled the work area.

Project Photos

Excavation beside a building exposing pipe beneath a concrete walkway
Excavation beside a building exposing pipe beneath a concrete walkway.
Crew member working at the exposed underground pipe connection
Crew member working at the exposed underground pipe connection.
Pipe connection with protective wrapping in the excavation
Pipe connection with protective wrapping in the excavation.
Interior pipe penetration during repair work
Interior pipe penetration during repair work.
Crew working in the exterior excavation beside the building
Crew working in the exterior excavation beside the building.
Excavated soil and pipe work beside the existing walkway
Excavated soil and pipe work beside the existing walkway.
Slurry placement around the repaired underground pipe
Slurry placement around the repaired underground pipe.
Slurry filling the excavation around wrapped pipe
Slurry filling the excavation around wrapped pipe.
Placement of fill beneath the slab from the exterior opening
Placement of fill beneath the slab from the exterior opening.
Interior pipe connection and surrounding concrete surface
Interior pipe connection and surrounding concrete surface.
Exterior walkway and backfilled repair area after the work
Exterior walkway and backfilled repair area after the work.
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