An assemblage to provide cover for homes, buildings, and commercial, industrial, and recreational areas. Roofs are constructed in different forms and shapes with various materials. A properly designed and constructed roof protects the structure beneath it from exterior weather conditions, provides structural support for superimposed loads, provides diaphragm strength to maintain the shape of the structure below, suppresses fire spread, and meets desired esthetic criteria. Roofs have been constructed in many shapes by using structural assemblies and materials including beams, arches, cut stone slabs, cast-iron segments, masonry or terra-cotta tiles, and thatched grasses.