A dome-shaped building structure having a substantially circular horizontal perimeter, said structure comprising:
- (a) a plurality of load bearing rib assemblies (15), equally spaced apart, each with a bottom plate (15a) and a head, said rib assemblies extending upwards from said perimeter to a common locus, said rib assemblies consisting of a plurality of inverted T-shaped upper and lower ribs, each with a top and a bottom section and right and left wings, the top section of a lower rib being connected to the bottom section of an upper rib;
- (b) a covered ring arrangement (23, 25, 29) horizontally and centrally located within said perimeter at a substantially vertical heighth above said perimeter, said ring arrangement serving as the common locus, said ring arrangement having at least one cylindrical horizontal wall, first fastening means fastening the heads of said rib assemblies to said ring wall;
- (c) a roof deck fixedly secured to said rib assemblies, said roof deck comprising at least two rows of corresponding upper and lower flat trapezoidal panel sections, each section having a top, bottom, right and left slanting walls, the width of the top of the lower row panel sections being of a shape and size disposed to cooperate with the width, shape and size of the bottom of one of the upper trapezoidal panel sections, the panel sections being aligned in rows and supported by said rib assemblies so that the right wall of each section is supported by the left wing of a rib and the left wall of each section is supported by the right wing of a rib in a manner that the panel sections in each row are supported alongside each other to form a conical-like structure, second fastening means at the top of the upper row panel sections fastening said upper section tops to said ring arrangement, the combination of said covered ring arrangement and panel sections forming a roof deck;
- (d) a plurality of inverted U-shaped building arch sections (39) with an arch top also with left and right side walls (42), each of said arch sections (39) similarly having one side wall resting and supported by a wing of one of said ribs and the other side wall resting and supported by the other rib wing;
- (e) section coupling means coupling the tops of the lower row panel sections to the bottoms of the upper row panel sections and also the bottoms of said lower row panel sections to the tops of said arch sections, said coupling means including strips (53, 53a) between said tops and bottoms and an inverted T-shaped support coupling (55) with fastening means to fasten the tops and bottoms across said strips and to said inverted T-shaped support coupling (55);
- and,
- (f) each trapezoidal panel section and U-shaped arch section consisting of a frame (41) with several ladder like rungs (43), side walls (42) and top and bottom covers (45) fastened to the frame, apertures (47) in the frames and corresponding apertures (47a) in the ribs allowing the several sections to be bolted to the ribs.