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Swagelining’s versatility

Colorado water utility managers assess the versatility of a pipe-lining method called Swagelining.

7 MIN READ

By Ken Matthews and Owen Randall

February 18, 2015

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Stantec

A TT Technologies Grundoburst 1250 CP static machine pulled HDPE… Read More A TT Technologies Grundoburst 1250 CP static machine pulled HDPE liner pipe into 24-inch and 27-inch host pipes.

Stantec

In Swagelining, HDPE liner pipe is pulled through a dye and fram… Read More In Swagelining, HDPE liner pipe is pulled through a dye and frame, which decreases its outside diameter. A cast-in-place reinforced concrete wall was built to keep the anchor from blocking the dye.

Stantec

In Swagelining, HDPE liner pipe is pulled through a dye and fram… Read More In Swagelining, HDPE liner pipe is pulled through a dye and frame, which decreases its outside diameter. A cast-in-place reinforced concrete wall was built to keep the anchor from blocking the dye.

Stantec

The pulling head was pulled off the liner pipe twice during inst… Read More The pulling head was pulled off the liner pipe twice during installation.

Owner: City of Fort Collins Utilities, Colo.

Engineer: Stantec Consulting
Prime contractor: Garney Construction
Prime contractor: Hydro Construction
Subcontractor: SAK Construction LLC

• It takes a lot of preparation time and very little time to do the pull. Take the time to carefully estimate stresses to pull the liner through the reduction dye and host pipe.

• Construct sound, conservative thrust-blocking.

• Make sure the correct pulling equipment is used and the actual force being applied to the liner is clear.

• There’s a right place and wrong place for Swagelining. Curved pipe is not the right application.

• It is not inexpensive.

• Require and check that a data logger is used for all fusion welds of the HDPE pipe.

Ken Matthews was Senior Associate, Water in the Fort Collins, Colo., office of Stantec Consulting when this article was written. He is now with Merrick & Company. Owen Randall works for the City of Fort Collins, Colo. Reprinted with permission. Copyright 2014 by the North American Society for Trenchless Technology; visit www.nastt.org. Original presentation was given at NASTT’s 2014 No-Dig Show. All rights reserved.