Trenchless Australia December 2021

Page 44

RELINING

SRP EXP being used on a relining project in Cairns.

The perfect rehabilitation solution for sewer, stormwater gravity mains 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.

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ussie 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

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

44 TRENCHLESS AUSTRALASIA DECEMBER 2021

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.


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Trenchless Australia December 2021 by Prime Group - Issuu