A cell phone tower is built from a repeating geometric frame that narrows slightly as it rises. Most are triangular or square ...

Back in the "old days," many channeled bodies were joined to the frame by welding. This column addresses the downside of this approach and suggests a good alternative. Q.I'm working on a '50s-era 1932 ...

Different structures have different functions or purposes. The individual parts of any structure need to be selected, arranged and fixed together carefully to make sure the structure carries out its ...