[Fig. 79] shows a stair having five dancing winders.
[Fig. 80] is a plan of a half-space stair having five dancing winders and a quarter-space landing.
[Fig. 81] shows a half-space stair with dancing winders all around the cylinder.
[Fig. 82] shows a geometrical stair having winders all around the cylinder.
[Fig. 83] shows the plan and elevation of stairs which turn around a central post. This kind of stair is frequently used in large stores and in clubhouses and other similar places, and has a very graceful appearance. It is not very difficult to build if properly planned.
The only form of stair not shown which the student may be called upon to build, would very likely be one having an elliptical plan; but, as this form is so seldom used—being found, in fact, only in public buildings or great mansions—it rarely falls to the lot of the ordinary workman to be called upon to design or construct a stairway of this type.
Fig. 74. Plan of Stair with Acute-Angle Landing and Cylinder.