This app is not a toy; it ’ s a powerful, easy-to-use structural engineering calculator with ambitions to reach the clouds. Image: Courtesy of Iproblue Tech The developer, IProBlue Tech., Fort Lee, N.J., says [steel hd], for the iPad, is based on a database comprising American Institute of Steel Construction manuals. It also has libraries with all the structural-steel profiles available in the U.S., Canada and the U.K. An Android version is on the way. The tools are parametric calculators based on the AISC libraries 13.2, 13.2-SI, 13.1.1, 13.1.1 SI, 13, LRFD 1 through 3, ASD 6 through 9 and
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.