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- W3146045490 abstract "This paper considers stone or brick staircases that appear to cantilever from an exterior wall as they spiral upward. A new equilibrium solution is proposed that does not rely on cantilevering from the wall. Unlike previously proposed membrane solutions, the proposed new analytical solution, called Linear Arch Static Analysis (LASA), is based on a 1D no-tension filament, or a set of such 1D filaments (that -by following Rankine’s definition- we call space linear arches), and is therefore particularly efficient. Each space linear arch represents a compressive element that spirals down the staircase, simulating a compressive force that is transferred through and between each stair. In addition, the equilibrium of each filament requires the contribution of horizontal uniaxial compressive forces which are provided by the exterior wall support and transmitted horizontally through each stair. The lines of action of such uniaxial compressive stresses are entirely contained inside the masonry. The new solution is applied to both circular and elliptical stairs to demonstrate the new equilibrium solutions, but also to quantify and highlight the magnitude of resulting forces and the efficiency of the solution. The effect of geometric variations on internal forces are also explored to evaluate the efficiency and feasibility of various potential stair geometries." @default.
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- W3146045490 date "2021-07-01" @default.
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- W3146045490 title "A new equilibrium solution for masonry spiral stairs" @default.
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- W3146045490 doi "https://doi.org/10.1016/j.engstruct.2021.112176" @default.
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