Low cost roofing techniques

Abstract

The low cost roofing techniques provide techniques for construction of low-cost roofing. The techniques reduce the proportion of cement by employing substitute (low-cost) materials that may be readily available to mix with the cement. These substitute materials include, but are not limited to, suitable agricultural wastes, such as rice husk ash, crushed used brick rubble, and pozzolana. The techniques involve forming a plurality of supports spanning the open space between the walls of the structure and mounting a plurality of dome-shaped sheet metal elements on the supports, forming a series of ceiling vaults. The concave surface of the dome-shaped elements forms the ceiling. The convex or outer surface of the dome-shaped elements forms the inner layer of the roof. The cement mixture is deposited on the convex or outer surfaces of the dome-shaped elements to form a second layer for the roof.

Dependencies are inferred from the claim text.