New PVC Pipe Joint A Hit With Pioneering Muni Pipe Bursting Crew

May 2014, Vol. 69 No. 5

Brownwood, TX, is considered a pioneer in municipal trenchless construction because for the past seven years, the city has exclusively used static pipe bursting for sewer main replacements, doing all of the work with its own municipal maintenance staff and machinery.

This municipality was also the first to use CertaFlo Greenline, a segmented, restrained-joint PVC pipe designed specifically for trenchless sewer projects.

CertaFlo Greenline is made by North American Specialty Products LLC (NASP), part of the North American Pipe Corporation group. Brownwood has since installed more than eight miles of this product. When NASP developed StraightShot, the industry’s first restrained-joint PVC pipe to offer a smooth, consistent outside and inside diameter, it was no surprise that the city of Brownwood was the first municipality contacted about a test installation.


“We wanted our first real-life installation of StraightShot to be done by a crew that had ample experience in static pipe bursting with our pipe products,” said Robert Eads, regional sales manager for NASP. “Having worked with our pipe as much as they have, they are a well-seasoned crew that knows our products well.”

Featuring NASP’s field-proven Certa-Lok restrained-joint technology, StraightShot offers a smooth, flush pipe joint without the need for the costly, time-consuming process required to connect other types of pipe. StraightShot provides an ideal solution for guided boring and gravity sewer projects where precise grading is critical and can also be used in sliplining and microtunneling applications.

When presented with the opportunity for his crew to be the first to install the groundbreaking product, David Harris, director of utilities for the city of Brownwood, eagerly accepted.

“A lot of municipalities and contractors might be uneasy seeing the word “trial” stamped on a pipe product and knowing that they would be the first to install it but, due to the success we’ve had with the CertaFlo product, I wasn’t worried about it,” Harris said. “Plus, I was able to compare a sample section of StraightShot with CertaFlo beforehand and that added to my confidence.”

The city found a section of six-inch gravity-fed clay sewer main due for replacement and ordered eight-inch StraightShot pipe from NASP for the trial installation. Using its TT Technologies Grundoburst 800G static pipe bursting system, the 10-person crew was able to complete the 440-foot sewer main burst within two hours, despite light rain.

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