It’s been about 10 years since earthmoving contractors began playing around in earnest with three-dimensional grade controls guided by global-positioning systems, which can speed up estimating and shaping earthwork by 30% or more. A new book explains the ins and outs of how to set up a grade-control network on the jobsite. Researched, written and published by the staff of Memphis-based TrenchSafety and Supply Inc., the book explains how grade controls, such as lasers and GPS, can displace traditional staking costs on a large-scale contract, which can run up $100,000 or more in surveying fees. “You can also see significant
RSS