| 摘要 |
A dome-like structure is disclosed which is non-circular in plan, the structure being formed of a plurality of substantially straight-edged panels, (25-36). At each of a plurality of horizontal levels in the structure the edges of the panels each extend between a respective pair of points (47, 48, 52, 54) on a notional envelope of the structure. The structure is so designed that, at each said level, the points (47, 48, 52) do not all lie upon a common circle, but that for each set of three adjacent horizontally spaced said points, either: a) all three (48) are at equal radii from a point in the same plane, or b) two adjacent ones (48, 47) of the three points are at a first equal radial distance (Radius 1) from a point (CP-1) in said plane and the remaining point (54) is at the same distance (Radius 2) as the adjoining point (47) of said set from a point (CP-2) on a radius from the point (CP-1) to said adjoining point (47).
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