Stair-Building and the Steel Square / A Manual of Practical Instruction in the Art of Stair-Building and Hand-Railing, and the Manifold Uses of the Steel Square

by Fred. T. Hodgson; Morris Williams

The term geometrical is applied to stairways having any kind of curve for a plan.

The rails over the steps are made continuous from one story to another. The resulting winding or twisting pieces are called wreaths.

Wreaths.

Fig. 82.
Geometrical
Stair with
Winders all
Around
Cylinder.

Fig. 83. Plan and
Elevation of
Stairs Turning
around a
Central Post.