Abstract: A fiber reinforced plastic stairway has a pair of laterally spaced apart elongated stringers adapted to be disposed between levels of the building and a plurality of integral riser surfaces and integral tread surfaces extending between said stringers so as to form steps. A plurality of individual preformed tread members are fastened on the tread surfaces.

Abstract: A stairway comprises a one-piece fiber reinforced plastic base having a plurality of riser surfaces and tread surfaces forming steps and a landing surface. The tread surfaces and the landing surface are configured to include an integral reinforcement surface region extending along a length of each tread surface and the landing. A preformed plastic tread member is fastened on a respective one of the tread surfaces of the base, and a preformed plastic landing member fastened on the landing surface. The base comprises a front wall region, first and second side wall regions and a rear wall region integrally formed as one-piece and is comprised of an outer filled resin layer and a plurality of fiber reinforced filled resin layers.

Abstract: A stairway includes a one-piece fiber reinforced plastic base having a plurality of riser surfaces and tread surfaces forming steps and a landing surface. The tread surfaces and the landing surface are configured to include an integral reinforcement surface region extending along a length of each tread surface and the landing. A preformed plastic tread member is fastened on a respective one of the tread surfaces of the base, and a preformed plastic landing member fastened on the landing surface. The base includes a front wall region, first and second side wall regions and a rear wall region integrally formed as one-piece and includes an outer filled resin layer and a plurality of fiber reinforced filled resin layers.

Abstract: A modular living enclosure for occupancy by a person comprises a plurality of molded plastic enclosure sections that are assembled to define an enclosure floor, four upright side walls, a top wall and a door opening when assembled, at least one of said enclosure sections being molded to form bathroom fixtures comprising a toilet communicated to a waste disposal for comminuting toilet waste, a washbasin, shower, and a floor drain. The washbasin and the floor drain communicate to a sump chamber disposed on the enclosure and having a sump pump therein.

Abstract: An improved gel coat for integral molded products having increased hardness consists of a synthetic resin mixed with tabular alumina and a surface treating agent such as gamma-Methacryloxypropyltrimethoxysilane. The gel coat may be applied as a first layer over a mold, pattern, part, or other surface with a filler reinforced resin layer applied to the first layer or with an intermediate layer of resin filled with calcium silicate applied between the gel coat and the reinforced layer. The gel coat may also be used as a surface coating for steel, composite, and concrete structures.