The latest figures from the U.S. Energy Information Administration (EIA) indicate that close to 70 million customers rely on the nation’s natural gas distribution network to deliver fuel to their home or business. Natural gas is delivered to customers through a 2.3-million mile underground pipeline system.
Manholes are critical assets of the nation's underground wastewater infrastructure. Recently updated manhole inspection and rehabilitation guidelines are aimed at improving manhole structural integrity by identifying issues and the appropriate methods of repairing and rehabilitation so that timely maintenance prevents major problems.
Over the past decade, as utilities and their underground contractors look for more efficient, economical and environmentally friendly ways to make repairs to underground utilities and install buried infrastructure, they are beginning to realize many benefits associated with keyhole technology.
Trepidation: [n.] a feeling of alarm or dread.
As we approached 2009 with an economy in free fall and zero confidence in any kind of positive funding trend, public works officials approached the coming year with extreme trepidation.
On Dec. 7, 2009, a new milestone was reached for auger boring machines (ABMs) using disc cutterheads. Contractor Gonzales Boring & Tunneling bored a landmark crossing length of 600 feet using a 42-inch diameter small boring unit (SBU-A).
Contractors and other operators of off road, diesel powered equipment are encountering a growing number of public construction projects that require retrofits of diesel engines powering older equipment.
Nearly 90 attendees heard the city of Houston Public Works and Engineering Department Director Michael Marcotte address the Dec. 9, 2009 luncheon of the Underground Construction Technology Association held in Houston.
With the PHMSA in the process of developing guidelines to further clarify baseline and integrity assessment requirements for cased pipe, Mears invited a group of customers to its test-and-research facility for a hands-on workshop of External Corrosion Direct Assessment applications of cased pipes.
In spite of a worldwide recession that has affected most areas of construction, members of the Pipe Line Contractors Association (PLCA) were busy throughout 2009, said association President Don W. Thorn.