Efforts to block the designation of styrene as a possible cancer-causing agent are proceeding on several fronts while organizations who use styrene in the manufacture of their products consider short- and long-term effects should they ultimately be forced to find a substitute for styrene.
Theodore Roosevelt aptly said, “When you are asked if you can do a job, tell 'em, 'Certainly I can!' Then get busy and find out how to do it.” This is certainly the philosophy taken by contractor Tri-City Groundbreakers when they were low bidder on a deep excavation project that was larger and deeper than anything that they had attempted before.
Pipe bursting is a proven method for replacing underground pipelines that provide critical services including municipal water, sewer, gas, storm water, electrical, telecommunications systems and more to people throughout North America and the world.
A California blue ribbon panel's report blaming a 2008 sewer pipe bursting project for the natural-gas pipeline explosion that killed eight people in San Bruno, CA, was poorly researched, unsubstantiated and ignored more likely explanations, according to city of San Bruno officials.
Pipe bursting is a method of pipe replacement that involves three main forces that must be overcome to accomplish installing a new pipe. A basic understanding of these three forces is required for anyone involved in a pipe bursting project from conception, to design, through final construction. A more detailed level of understanding of the effects of varying ground conditions (geotechnical data) is essential to the success of a project by the senior team members including engineer, owner, contractor and field crews.
The nation’s failing sewer collection system infrastructure encompasses main pipelines, lateral sewers and manholes. There exist over 20 million manholes in the U.S. of which over four million are older than 50 years and over five million are 30 to 50 years old.