or wing, flights, suitable for a public building. The flights and platform may be wainscoted, and, by the introduction of half newels set against the wall opposite the regular newels, a good structural effect is obtained. The regular and wall newels may be carried up as columns and pilasters, further improving the treatment The flat, ornamental arches may also be introduced between the newels and half newels, to break up and panel the soffit spaces. For a public stairway of this character, executed in either wood or iron, a better effect is produced by omitting the plaster and showing the framework of the structure.
59. Circular Stairway. — A plan of a circular stairway is shown in Fig. 55; all the risers except the three curved ones at the start radiate from the center b, and are equally spaced at the front and wall stringers. The first two steps are curved out, to increase the width of the stairway at the start, thus giving it a more pleasing appearance. A curtail step and hand rail at the starting of such a stairway is very appropriate and attractive. The dotted lines indicate the position of the carriage timbers. A similar method may be followed for elliptic stairways.
Instead of a cylindrical front stringer, as in this plan, a circular newel post of sufficient length is sometimes used as a central support, the treads and risers being framed into the central newel and into the wall stringer. The newel post may be cased with 7/8-inch boards of the same width as the treads at the point of connection, affording support and enclosure like mortises to the steps; the spaces for the risers