An introduction to R : a programming environment for data analysis and graphics

A stressed membrane space enclosure having a supporting frame comprising a plurality of spaced individually separable arch-like members with a strip of fabric stretched between each adjacent pair of arches and by means of which separable arches the fabric is tensioned. The feet of the arches rest on load-bearing pads that are individually shiftable as during the frame spreading for the purpose of tensioning the fabric and that each finds its own proper resting place when all the stresses on the structure have been normalized and is then secured against unauthorized movement by ground anchors, thereby achieving the greatest possible strength and stability of the supporting frame. The fabric is applied in reinforced elongated strips one such strip between each adjacent pair of spreadable frame members and stretched to a predetermined tension to bear maximum loads of wind and snow. Reinforcing the strips of fabric in the direction of the tension stress and ensuring a high uniform tension on each strip aids in the discharge or dispersal of heavy environmental loads and the overall strength of the structure. A load regulated power jack may be used to spread the adjacent pairs of frame members to achieve the desired fabric tension and allow the fixing of extendable spacing bars therebetween.