Abstract
Summary Recently, in scientific literature, information on a new type of suspended straight-line 3-hinged roof structures has considerably increased. It was stressed that straight-line elements are easily manufactured and erected, roof decking service conditions are good. In the world building practice during last 30 years very effective composite structures have been introduced, even hollow concrete-filled steel tubular members. But no information on the application of such members for suspended roofs was obtained. In some sources very simple straight-line suspended roofs structures were analysed, and for those shapes an effective centrifuged hollow concrete-filled steel tubular members may be successfully applied. These members do not require additional roof stabilisation. These composite ropes may be attributed to the elements of final flexural stiffness, and they are effective and simple to decrease deflections of the suspended roof. However, for these composite ropes the methods of their deflection c...
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