Roofing Ready Reckoner: How To Build A Roof

complete roofing ready reckoner for roofs from 3 in 12 to 15 in 12, that's 14 degrees to 51 degrees in both metric and imperial. Instructions and diagrams on how to build a roof and bay roofs, how to work out the cuts and lengths of rafters, hips, jacks, cripple jacks and work out valleys. You will learn how to work out run and rise, length of all rafters, angles with nothing but a cheap calculator in case you have no rafter tables with you, with my formulae you can work out roofs which are not even covered in rafter table books. I show you how to use the speed square and the steel square. This is probably the only book you will ever need unless you want to go really advanced and construct polygon roofs and eyebrow dormers although the basic octagon is covered in order to build the splayed bay roof properly.