NASTT Case Study: Emergency Sewer Force Main Trenchless Rehabilitation Project in Valley Forge National Historic Park

Valley Forge pipe lining

NASTT Abstract:¬†Tredyffrin Township faced three catastrophic failures of a 30-inch Prestressed Concrete Cylinder Pipe (PCCP), the Wilson Road Sewage Force Main (WRFM), between 2012 and 2014.. The majority of force main pipe is located within the national park, and the pipe alignment also parallels Valley Creek, which is an exceptional value trout stream. The compromised […]

NASTT Case Study: Water Pipeline Rehabilitation uses Trenchless Solution

Laramie

NASTT Case Study Abstract: Older pipelines can pose a host of challenges for potable water infrastructure. Corrosion and tuberculation can contribute to everything from taste and odor issues, to decreased flow capacity. Assessment of an 18-mile-long segment of a 20-inch steel water pipeline, pressure rated at 100 psi, in Laramie, Wyoming, indicated the need for […]

ASCE Case Study: Exploration of Loose-Fit and Tight-Fit Sliplining with Butt-Fusion Welded Thermoplastic Piping for Pipeline Rehabilitation

Newport

American Society of Civil Engineers (ASCE) Abstract: Trenchless rehabilitation of existing pipelines is a continually growing industry with many viable technologies available to the end user. Pipeline rehabilitation via sliplining methods is a well established means of trenchless construction that can sometimes be overlooked when evaluating rehabilitation options. With many older water and wastewater pipelines […]