The perfect rehabilitation solution for sewer, stormwater gravity mains

from Trenchless Australia December 2021

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Aussie Trenchless’ SRP-EXP spiral ribbed pipe is designed to form in-situ and can even be installed under live flow conditions, limiting downtime and site footprint.

Aussie Trenchless is headed by industry old-hand Chris Meredith. Skilled in achieving superior trenchless outcomes, Meredith is committed to pioneering state-of-the-art solutions for no-dig civil construction.

Offering practical advice to infrastructure owners and contractors on a variety of underground pipeline rehabilitation techniques, Meredith’s practice is backed by a wealth of knowledge and experience. From pipeline assessment, sealing and CCTV techniques, as well as various rehabilitation processes, Aussie Trenchless is a go-to for proven trenchless solutions.

The company offers a range of innovative new products, adding more to its inventory as the industry evolves. Just one of these latest developments is the SRP-EXP. Characterised by its intuitive use and speedy installation process, it can extend the service life of sewer and stormwater assets by more than five decades.

The SRP-EXP is a close-fitting structural, spiral ribbed PVC trenchless pipe lining system and is an ideal rehabilitation solution for deteriorated and degraded sewer and stormwater pipelines.

A liner pipe is formed in-situ by helically winding a PVC profile strip into a host pipe, usually from an existing access chamber. The spiral winding machine is positioned into an access chamber or pit, which then winds the SRP-EXP ribbed strip to produce a secondary pipe within the existing pipeline.

The system is first installed at a smaller diameter and then expanded to fit snuggly against the internal surface of the existing structure. Because the profile is initially set to a small diameter, it can ride over displaced joints and negotiate bends and damaged areas.

This relining product is available for asset profiles from DN150 to DN1200. The SRP-EXP profile strip is engineered with a dual action lock. During the initial windin process, this functions to hold the spiral wound pipe tight at the initial diameter.

Aussie Trenchless offers a range of innovate new products, adding more to its inventory.

SRP EXP installation equipment on site.

When the total installation is reached, the SRP-EXP liner end is then torsionally restrained, with the lock area sequentially released such that the liner expands. The expansion is smooth and controlled before the lining is pressed hard against the pipe wall.

It is even possible to install the SRPEXP under live flow conditions. Flow control is generally not required during the installation process, thus avoiding any interruptions to the network.

The SRP-EXP also has a small site footprint. It is quick and easy to install, and it doesn’t generate any waste.

This liner is designed in accordance with industry standards, such as ASTM F1741-08 (2016), to provide a stand-alone structural liner. SRP- EXP is available in a number of different profiles sizes to suit gravity pipe sizes from DN150 to DN1200, and is guaranteed to extend the life of your assets by at least 50 years.

For more information visit

www.aussietrenchless.com

SRP EXP being wound into the pipeline through a manhole.

SRP EXP SPIRAL LINING

QUICK AND EASY TO INSTALL

PST METHOD

SEWER & STORMWATER MAN ENTRY PIPE

The perfect rehabilitation solution for deteriorated sewer and storm water pipelines. A nimble segmental polypropylene lining system offering many unique benefits.