Pipe jacking is a trenchless construction technique that employs hydraulic jacking forces to install pipelines beneath urban areas, minimising surface disruption. This method is increasingly vital ...

A new equation for accurate approximation of the Moody friction factor in the general gas-flow equation better approximates a wide range of Reynolds numbers than previously published equations. Other, ...

The idea is not a new one: Use composites to reline underground pipe without the time, effort, and expense of digging up all that dirt. Currently, there are two types of lining technology. One is a ...