The invention provides a method of constructing a building roof made from Expanded PolyStyrene (EPS) which is coated on the inside and outside with Glass Fiber Reinforced Concrete (GFRC). The building roof is designed in a CAD program. The roof is then constructed of beams, such as I-shaped beams, of...http://www.google.com.au/patents/US7779600?utm_source=gb-gplus-sharePatent US7779600 - Method of constructing a composite roof
