Prestressed unitary building method and structure

Details Prestressed unitary building method and structure Prestressed unitary building method and structure

E - Fixed Constructions

04

B

E04B 1/14 (2006.01) E04B 1/32 (2006.01)

Patent

CA 2262720

A method and structure for forming a small building includes a continuous curved wall forming a semi-arcuate arch, the wall comprised of lightweight cellular material such as foamed blocks. The blocks may be identical and interchangeably secured in place by adhesive to form the wall, so that the arch is easily constructed. The arched wall comprises both the longitudinal sides and the top of the structure. In addition, the structure includes an outer skin which covers the entire exterior of the arched wall. The outer skin is both a weatherproof layer and a tension member to apply a compressive force uniformly to the outer surface of the arched wall and significantly augment the load strength of the arch, resulting in a structure that is made very strong with a minimum mass of material. The method of the invention includes the steps of providing a plurality of cellular blocks of expanded foam plastic or the like, each block defining an angular increment of an arched wall and having a length that is an incremental portion of the length of the arched wall. Courses of blocks are laid in laterally spaced arrangement and adhered in place until the arched wall is completed. Alternatively, incremental arches may be constructed horizontally and tilted upwardly into abutting, adjacent relationship. Thereafter, an outer skin is formed over the exterior surface of the arched wall and tensioned to compress the arched wall.

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