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Creative Solutions to Field Point Repairs during Construction on the Salado Siphons 8, 9, and 10 Project

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Collapses on sewer mains can be disruptive to customers as well as construction on new infrastructure. Remedying collapses with point repairs is typical and requires an immediate response to the situation. The repair is often executed by in house operations and maintenance personnel of the utility. A response may also be initiated by the contractor once a repair method has been reviewed and approved by the utility for a negotiated price. The urgent nature of the emergency demands a thoughtful but quick response by both the utility and the contractor if an infrastructure project is involved.

This manuscript details two collapses that occurred within weeks of each other on the same siphon. The following information will discuss creative ways to repair collapses with onsite materials, observed trends from operation personnel on why failures occur, and how to prevent such problems in the future.
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Keywords: Plate steel; SAWS; downstream (DS); fiberglass reinforced pipe (FRP); flowable backfill; inflow and infiltration (I&I); notice to proceed (NTP); operations and maintenance (O&M); points of inflection (PIs); points of vertical inflection PVIs; poly wrap; reinforced concrete pipe (RCP); sanitary sewer overflows (SSO's); upstream (US)

Document Type: Research Article

Publication date: 2009-01-01

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