Articles & Case Studies

Versatile qualities

Posted: Tuesday 19th May 2009

The versatility and unique qualities of ductile iron pipe from sector leader Saint-Gobain PAM UK have earned it a key role in a major water pipeline installation in north-east England.

The replacement of the 16km Tyneside North Circular Main between Horsley and Gosforth was a major project for Northumbrian Water, undertaken by Carillion.

While much of the work was fairly straightforward and used standard 900mm Saint-Gobain ductile iron water pipe, four sections – notably those underneath major roads such as the A1 and A696 - required a different approach.

For these sections, tunnelling underneath the road would have meant major delay and disruption to traffic and so a solution based on trenchless technology was needed.

Saint-Gobain PAM UK’s acclaimed PAM Universal pipe, with its unique boltless restraint solution, which can be simply pushed together to create a secure seal with strong pipe to pipe anchorage, was the ideal solution.

The product can withstand high pulling forces with up to 1.5º deflection, as well as pressures of up to 25 bar – well above the legal requirement for this type of product.

The new pipeline also passed through the grounds of Newcastle Airport and to avoid disruption here an oversized tunnel was created, through which the Saint-Gobain pipes were pulled on ‘spiders’ by a mobile excavator to facilitate rapid installation.

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