DOME STRUCTURE, METHOD OF FORMING SAID STRUCTURE, AND APPARATUS FOR FORMING SAID STRUCTURE

摘要

A method for forming a dome-type structure comprising the steps of inflating a support envelope and applying a hardenable foam material to the exterior surface of the support envelope. The foam is permitted to harden around the envelope and the hardened foam material is coated with a perlite-based composition. The perlite composition is permitted to harden so as to form a dome. The support envelope is removed from within the hardened foam. A dome-type structure comprising a hardened foam layer coated with a perlite-based copmposition is also disclosed. Apparatus for constructing a dome-type structure which comprises a carriage support upon which the dome-type structure is to be built. The construction support comprises a track. A support envelope is provided as well as an envelope carriage adapted to rotatably position the support envelope above the construction support. The apparatus further comprises means for inflating and deflating the support envelope and means for rotating the envelope carriage.