Patent ID: 8001732
Filing Date: 2011-08-23
Classification: E04B,E04H

Abstract:
1. A method for the construction of a structure comprising a multiplicity of joined hyperbolic paraboloid faces, each formed on an a-planar quadrilateral frame, each of said frames comprising an underframing which is completed by inframing to compose said frames which are covered with strips of slightly twisted sheeting material, raised into position and joined, being a method of constructing enclosures of N-way symmetry comprising N hyperbolic paraboloid faces, said structures being formed by the following process: attaching two leg members and two ridge members in a simple planar quadrilateral underframe having two opposite joints as peak joints, and two remaining joints, one being the apex, and the other the foot joint; raising any of said apex, foot, or peak joints a prescribed amount, twisting said leg and ridge members, thereby creating an a-planar quadrilateral underframe; twisting and attaching a multiplicity of inframing members of substantially straight materials to the leg and ridge members, said members arranged substantially parallel to one another and to a leg and ridge member at substantially equal intervals to the other leg and ridge members, said inframing members each being twisted an amount sufficient to correspond to the a-planarity of the underframing, together forming an assembled frame composed of the a-planar quadrilateral underframe together with twisted inframing; attaching a tension restraining member connecting the peak joints, and establishing said peak joints at prescribed distances; twisting and attaching a covering of strips of sheeting material, oriented substantially perpendicular to said inframing, to said a-planar quadrilateral assembled frame, forming a hyperbolic paraboloid face; erecting N hyperobolic paraboloid faces, said erecting including: raising each entire face to a desired height, and attaching each of the faces to the next face; attaching said tension restraining members of each face to each other at each of said peak joints; wherein N framed and sheeted hyperbolic paraboloid faces are mutually attached, composing a completed roof structure suitable for full enclosure by enclosing triangular openings formed under the erected leg members.