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South Dakota

bullet.gif (952 bytes)PROJECT: Manhole Inspection/Rehabilitation
bullet.gif (952 bytes)LOCATION: Sioux Falls, South Dakota
bullet.gif (952 bytes)SCHEDULE: January 1992 - July 1992
bullet.gif (952 bytes)PROJECT BACKGROUND:
The City of Sioux Falls, South Dakota, identified inflow and infiltration (I/I) in its sewer system. Defective manholes proved a significant contributor. Defects ranged from leaking, vented manhole covers or failed frame seals to manholes with severe structural deficiencies. Sioux Falls called on Stockwell Engineers, Inc., a local engineering firm, to solve the sewer problem.

bullet.gif (952 bytes)PROJECT SCOPE:
Stockwell Engineers retained Wade & Associates to provide direction and support for a manhole rehabilitation project. Approximately 1,500 manholes in Sioux Falls were inspected using Wade & Associates forms. The firm provided training and quality control for the inspection program. Data was entered into Pipedream©, Wade &Associates' defect and hydraulic modeling software. A repair schedule was developed from the model database. Wade &Associates provided construction plans and specifications detailing generally accepted rehabilitation methods for approximately 500 manholes.

Wade & Associates took care to provide bidders with precise plans and details and clear, accurate specifications. Bids for construction work came in under budget, allowing the City to expand project parameters without additional funding.