Reinforced Concrete Staircases Analysis and Design
"Staircases constitute a very important part of a structure, both architecturally and aesthetically, as well as structurally. They appear in different shape and forms, each requiring
its own method of analysis. Regarding their structural configuration stairs usually fall in ne of the following categories:
a) Stairs with cantilever steps that are supported on a shear wall
along the stair.
b) Stairs whose steps are supported on a slab. In this case, the slab with its two landings constitutes one structure with one or three branches.
c) Stairs whose steps
are supported on two girders, like simply supported beams.
d) Stairs with free standing landings, with branches perpendicular or parallel to each other (in plan view) .
e) Helical stairs which are supported on the slabs of the upper and lower floors, without intermediate support
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