Upper Scioto Area East Branch Sewer Rehab (Case Road to Martin Road)

Overview

Ribway was the prime consultant selected to provide design and construction administration services for the rehabilitation of a 1,900-foot section of 42-inch diameter concrete aerial sewer, which included seven manholes and approximately 40 supporting concrete piers. The existing sewer exhibited leaking joints, deteriorated exterior pipe surfaces, and significant structural deficiencies in many of the piers, such as spalls, honeycombs, and delaminations.

Project Scope

The project included:

• Assessment: Field evaluation to identify defects and determine the extent of deterioration in the sewer and supporting structures.
• Rehabilitation Alternatives: Evaluation of options, including slip lining, joint sealing, and cured-in-place pipe (CIPP) lining. Slip lining was selected for its lower cost, longer service life, safer construction method, and reduced impact on the nearby residential neighborhood.
• Manhole Repair: Cementitious grout lining was chosen for rehabilitating the manholes.
• Pier Restoration: Use of cement-based patching mortar and a water-based exterior coating to address structural deficiencies in the concrete piers.

Design Phase

Ribway prepared detailed construction documents, including:

• Plan and profile drawings.
• Manhole rehabilitation details.
• Pier restoration details.
• Maintenance of traffic plans.

Additional services included the preparation of plats and legal descriptions for several easements. Design documents were completed in February 2003.

Construction Management

During construction, Ribway provided administration and oversight services to ensure:

• Execution: Adherence to the approved construction plans and specifications.
• Coordination: Effective communication between contractors and stakeholders.
• Quality Assurance: High standards of workmanship and compliance with safety protocols.

Timeline and Results

• Design Completion: February 2003.
• Construction Completion: August 2004.

The rehabilitation project restored the sewer’s structural integrity, eliminated leakage, and extended its service life while minimizing disruption to the surrounding community.