54-Inch Sanitary Sewer Rehabilitation at University & Main

Details

When was it constructed and how long has it been in service:

Constructed in 1976. In Service 48 Years

Dimensions:

250' Section of 54" Monolithic Reinforced Concrete Sanitary Sewer

Depth of pipe:

24'

Depth of ground water:

19'

Health and safety:

Conventional confined space entry with 48-Inch Barrel Fan (110V) and 36-Inch Blower Fan (230/460V-5HP)

Has any re-inspection been performed? What was the condition of the pipe?

None yet performed.

References

PM Construction & Rehab, LLC
a PURIS Company
Scott Jacobucci, P.E.
Regional Vice President
281-536-0866

Methodology

Ventilation and odor control used:

Conventional confined space entry with 48-Inch Barrel Fan (110V) and 36-Inch Blower Fan (230/460V-5HP)

Rehab method used:

Danby – Spiral Wound method using Danby PL3F (1/2") Profile.

Cleaning method used (if required) and who cleaned the line:

Combination of Boyer's Patented Debris Removal System using winch and pulley system followed by Hydro Blast by Boyer, Inc. 310 tons of debris removed.

Method of flow bypass or diversion, if used:

Bypass System, and upstream plug.

Hurdles

Problems encountered during construction:

Prior to Danby installation, an upstream plug was blown out and had to be replaced. No problems after Danby installation began.

Problems encountered after construction:

None