Patent ID: 7269926
Filing Date: 2007-09-18
Classification: E04B

Abstract:
1. A dome-like structure which is non-circular in plan, comprising a plurality of parts disposed one above the other and including an apex part and one or more lower parts each forming a respective frustum adjoining the part immediately above, the structure being formed of a plurality of substantially straight-edged panels, the panels in each said frustum being trapezoidal in shape, the panels meeting one another along lines which lie in respective vertical planes, the edges of said panels each extending between a respective pair of points, on the exterior of the structure, and wherein said points are disposed at selected ones of a plurality of horizontal levels in the structure and wherein, at each said level, said points do not all lie upon a common circle, characterized in that, for each set of three adjacent horizontally spaced said points, either (a) all of the three points are at equal radii from a point, herein for convenience termed a locator point, for that set, in the same plane, or (b) two adjacent ones of the three points are at a first equal radial distance from a point, herein for convenience termed a locator point, for that set, in said plane and the remaining point of the three points is at the same distance as the adjoining point of said set of three from a point on a radius from said locator point to said adjoining point, whereby each horizontal edge of a said panel at a said horizontal level forms, in plan, the base of an isosceles triangle of which the sides are formed by the radii to a respective said locator point, and, at each of said horizontal levels in the structure, the ratio of the horizontal length of a said horizontal edge extending between two adjacent said points to the radial distance of these points from the locator point for these points, is the same from said horizontal edge to said horizontal edge, and wherein each said locator point, lies in the same vertical plane as locator points, in said levels above or below.