Chapter 18 Stair Construction
609
squeaks. Housed stringers show above the
profi les of the treads and risers and provide a
fi nish strip along the wall. The design should
permit a smooth joint where it meets the base-
board of the upper and lower levels.
18.10 Winder Stairs
Winder stairs present stair conditions that are
frequently regarded as undesirable, Figure 18-22.
In fact, some localities do not allow them. Check
local building codes to see if this type of stairs
is allowed. The use of winder stairs may some-
times be necessary, however, where space is
limited. When used, it is important to maintain
a winder-tread width along the line of travel
that is equal to the tread width in the straight
run. When winders are used, it is best if they
are at the bottom of a straight run.
An adaptation of the standard winder
layout is illustrated in Figure 18-23. Here, if you
extend the lines of the risers, they meet outside
the stairs. This provides some tread width at the
inside corner. Before starting the construction of
this type of stairs, the carpenter should make a
full-size or carefully scaled layout in plan view.
The best radius for the line of travel can then be
determined.
Figure 18-22. Typical drawing of a winder stairs. The
tread width on the winding section should be the same
at line of travel (near middle of stairs) as the tread in
the straight run.
10 10
10
10
10
10
10
10
Winders laid out
from point located
outside of stair
Line of travel
Figure 18-23. Laying out a winder stairs with lines
representing the tread nosings converging outside of
the construction.