Technical Papers – Trenchless Pipe

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Permalok® Steel Casing Pipe

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Innovative Steel Casing Pipe Installation Using Mechanical Interlocking Joints, 2018

Trenchless construction techniques eliminate the need to open-cut roadways, railroads, canals, city street intersections, and other locations where trenches for pipe and casing installations are prohibitive. This paper discusses the use of mechanical interlocking joints for casing installations, including case histories, design and specification considerations, and the efficiencies gained with the various styles of innovative joints available.

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Large-Diameter Microtunneling and MTBM Wet Retrieval at the Gilboa Dam Reconstruction Project, 2016

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Permalok® HDD Joint

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Trenchless Installations on the Lake Oswego-Tigard Partnership Project: Use of Steel Water Pipe and Steel Casing Pipe for HDD and Microtunneling, 2018

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Pipeline Rehabilitation

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PCCP Main Rehab with Steel Slipliner, 2013

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Rehabilitation of Large Diameter PCCP: Relining and Sliplining with Steel Pipe, 2012

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Innovative Joint Proves Successful in Critical Slipline Project, 2011

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Relining Prestressed Concrete Cylinder Pipe, 2004

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