WASHINGTON, DC — Following a recent series of trench collapses in the Midwest, the US Department of Labor’s Occupational Safety and Health Administration is urging workplaces to take the necessary ...

Type C soils are granular, with an unconfined compressive strength of 0.5 tsf or less, meaning a trench cut through them will collapse under less than a 1,000-pound load. Soil that under better ...

If conditions aren’t ideal, it may not be safe to send your employees into a trench. There are four classifications of soil that vary in stability: Solid rock, Type A, Type B, and Type C.

When an environmental firm took soil samples at the Convention Center in July 2013 to... Confusion still reigns on excavated soil San Antonio Express-News Hearst Newspapers Logo ...

This paper "A back-analysis method of deep excavation in soft soil based on BIM-NS-ML integrated technology” was published in Smart Construction. Jiang S, Li Z, Zhang R, Zheng J, Zhou S.

The U.S. government named it a Superfund site in 1988, and the 9.7-acre cleanup began in 1995. In all, 93,429 tons of soil were excavated by 2000, EPA documents show. ...