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Description of Stairs - Stairs are
variously named according to their shape and plan, or the method
of constructing the strings, and they may be roughly divided into
two clases, newel and non-newel. In the first of these the newel
post is an essential part of the construction, and this includes
dog legged, open newel, and spiral or circular newel stairs. In
the second class the newel is usually dispensed with, or when used
it is merely as an ornamental finish to the balustrade, and is in
no sense a constructive part of the stairs. To this class belong
the continuous string or geomatrical stair, the elliptic, polygonal,
and circular well stairs. All of these names refer to the disposition
of the stairs in plan, and they are otherwise designated, in reference
to the manner of treating the strings, as close or housed string,
open or cut string, and bracketed strings. |