Patent ID: 6843026

Claim:
In a building, a roof structure comprising an essentially non-load supporting, vertically extending central column having a lower end spaced above a supporting structure of said roof structure; and a plurality of at least three elongated and vertically inclined, multi-element trusses fixedly joined on innermost ends thereof to said central column and being rotationally displaced from one another in a horizontal plane, each of said trusses extending radially outwardly and downwardly from said central column to an outer end portion thereof for mounting on a weight bearing supporting structure at a level spaced above the supporting surface of said building and below the lower end of said column, said plurality of trusses thereby defining a roof structure in the form of a cone shaped polygon, wherein each of said trusses comprises an upper beam which is vertically inclined at a first angle relative to horizontal and a lower beam disposed below said upper beam which is inclined at a second angle relative to horizontal, said first angle being greater than said second angle such that corresponding ends of said upper beam and said lower beam at an innermost end of each of said trusses are vertically spaced apart to a greater extent than are opposite corresponding ends of said upper beam and said lower beam at an outermost end of each of said trusses and are fixed in position relative to upper and lower end portions of said central column, respectively.