'It is better to be roughly right than precisely wrong.' John Maynard Keynes Engineering Structures is mostly formally taught in a lecture room with little time devoted to real examples. On graduation an engineer has to cope with turning this eagerly acquired knowledge into reality. To make sense of this a designer needs to be able to test their ideas with a simple set of tools which involve little more than pen, paper and calculator. Architects often wonder if there is an easier way to evaluate alternative structural solutions in their designs. For more information see www.struartapp.com.