E - Fixed Constructions – 04 – B
Patent
E - Fixed Constructions
04
B
20/20
E04B 7/06 (2006.01) E04B 7/12 (2006.01)
Patent
CA 1168014
ABSTRACT OF THE DISCLOSURE A novel roof construction is provided herein. The construc- tion includes at least a pair of juxtaposed hyperbolic paraboloid units, each unit comprising four quadrants, each quadrant having a pair of spaced, stiffened, horizontal edges and a pair of spaced, stiffened, sloping edges, the sloping edges sloping downwardly from an upper level to a lower level. Two sloping edges of the first unit are contiguous to two sloping edges of the second unit and the other sloping edges of the units are non-contiguous. The stiffened horizontal edges all lay in in a top, horizontal plane. The juxtaposed units are joined together at respective contiguous sloping edges thereof to form a multiple unit roof span that includes both horizontally extending edges and sloping edges. A plurality of vertical members support the roof span at the lower ends of only the non-contiguous sloping edges. Finally first horizontally disposed and tensioned members connect the lower ends of the sloping edges that are unsupported by vertical members with the lower ends of sloping edges that are supported by vertical members. The first tensioned members all lie in a lower horizontal plane. In this way a free span roof construction is provided. In other words, this construc- tion can be employed to form a large roof span without using interior vertical support members.
399191
Borden Ladner Gervais Llp
Kirschen Solomon
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