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The City of Newark, NJ is in the midst of a commendable program to preserve its historic brick sewer system. The City's extensive Brick Sewer System Evaluation Program began in 1990. Under Phase III/IV of the Program, which began in 1997, the City and consulting engineer CDM have videotaped and evaluated the condition of nearly 112,000 linear feet of combined brick sewers. The sewers are of a variety of shapes – circular, egg, oval and horseshoe. The evaluation included giving each sewer segment a “Priority Rating,” identifying which segments are most in need of repair so that they may be addressed first. The present phase of the program has already resulted in rehabilitation of over 53,000 linear feet of sewer, and has included bidding different technologies (cured-in-place lining and fiberglass-reinforced plastic lining) against each other to ensure the most economical yet fully structural rehabilitation. Special attention has also been paid to details such as manhole rehabilitation and sealed connection points between laterals and the lined sewer.

The program has recently culminated in some of the largest installations of cured-in-place pipe (CIPP) in the country. In 2003, the City of Newark structurally rehabilitated a 400-foot-long section of 108-inch diameter brick sewer and an 80-foot-long section of 105” diameter brick sewer via CIPP technology. All CIPP installations in the City are presently being done by water inversion and water curing, making the installation of the 108” diameter, 2.6-inch thick and the 105” diameter, 2.81-inch thick resin-impregnated felt liners especially unique.

The presentation proposes to discuss the approach to the evaluation, the CIPP installation and issues municipalities should address in a CIPP program.
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Document Type: Research Article

Publication date: 01 January 2005

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