Hot-rolled steel purlins predate modern metal building systems by decades. A multitude of industrial buildings constructed since the beginning of the twentieth century utilized hot-rolled channel and ...

Industry's move to electric arc furnaces and architects' specification of light gauge framing systems are helping to improve the sustainability of building projects ...

Cold-formed C and Z purlins are the ... ways to bend a sheet of metal into a section with a web and two flanges. Light-gage purlins of 8 to 12 in in depth can span 25 to 30 ft, and even more, ...