RJN Conducts Sewer Condition Assessment for Trinity River Authority

The Walker Calloway Trunk Sewer Assessment project for the Trinity River Authority (TRA) of Texas began this past July. RJN Group, Inc. (RJN), is providing professional engineering services for the assessment of approximately 15,000 lf of sewer pipe ranging in size from 24 in. to 42 in. in diameter.

Assessment services being provided include manhole inspections and internal pipeline inspection using close-circuit TV (CCTV), Sonar, Laser, and/or all three of those methods together using a combo unit.??????

Deterioration problems have occurred in some of the concrete pipe and the laser technology will be used to determine the remaining thickness of the wall. Ultimately, this will determine the remaining useful life of the pipe. The sewer interceptor is located in North Richland Hills, Hurst and Fort Worth, Texas, and transports flows from the City of North Richland Hills and the City of Hurst.

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