Figure 6-69.-Parts of a stairway.
Additional parts commonly used in a finished
stairway are shown at the right in figure 6-69. The
stairway shown here has three stringers, each of
which is sawed out of a single timber. For this
reason, a stringer of this type is commonly called
a CUTOUT or SAWED stringer. On some
stairways, the treads and risers are nailed to
triangular stair blocks attached to straight-edged
stringers.
A stairway that continues in the same straight
line from one floor to the next is called a
STRAIGHT-FLIGHT stairway. When space does
NOT permit the construction of one of these, a
CHANGE stairway (one that changes direction
one or more times between floors) is installed. A
change stairway in which there are platforms
between sections is called a PLATFORM stairway.
Stairs in a structure are divided into
PRINCIPAL STAIRS and SERVICE STAIRS.
Principal stairs are those extending between floors
above the basement and below the attic floor.
Porch, basement, and attic stairs are service stairs.
The lower ends of the stringers on porch, base-
Figure 6-70.-Kickplate for anchoring stairs to concrete.
ment, and other stairs anchored on concrete are
fastened with a kickplate (fig. 6-70).
Finish Flooring
Finish flooring is broadly divided into wood
finish flooring and resilient finish flooring. Most
wood finish flooring comes in strips that are
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