Stair Types for New Home Construction
|A stairway is a series of steps with or without landings
or platforms, which is installed between two or more floors of a building. Stairs provide easy access
to various levels of the home. All styles of homes, except the ranch with no basement have stairs. Prime
considerations in stair design should be easy ascent or descent and safety.
A house may have a main stairs) from the first floor to the second floor or from a split- level foyer
to the first floor) and/or a service stairs. The main stairs are usually assembled with prefabricated
parts and are much better quality than service stairs. They are generally made of hard woods such as oak,
maple, or birch. Service stairs are frequently constructed on location and are ordinarily made of Douglas
fir or pine.
Six general types of stairs are commonly used in residential construction. They are the straight
run stairs, L stairs, double L stairs, U stairs, and spiral stairs.
|The straight run stairs are the stairs used
most in new home construction. Straight stairs, as the name implies, have no turns. These stairs are not
as expensive to construct as other types of stairs.
|The L stairs has one landing at some point along the flight
of steps. If the landing is near the top or bottom of the stairs, the term Long L is used to describe
the difference. L stairs are used when the space required for a straight run stairs is not available.
|Double L stairs require two 90 degree turns along the flight.
They may be used when space is not available for either the straight or L stairs. Double L stairs are
not frequently used in residential construction.
|U Stairs may be constructed may be either as wide U or narrow
U stairs. Both have two flights of steps parallel to each other with a landing between. The difference
between wide and narrow U stairs is the space between the two flights. Narrow U stairs have little or
no space between the flights while U stairs have a well hole between.
|Winder stairs have “pie-shaped” steps which
are substituted for a landing. This type is used when the space is not sufficient for the L stairs. If
winder stairs are used, the width of the triangular steps should be sufficient at midpoint to provide
a tread width equal to the regular steps.
|Spiral or circular stairs are gaining in popularity and
the components are now manufactured by several companies. They may be used where little space is available.
Most spiral stairs are made from steel and welded together, however, it is possible to construct them
from wood. Spiral stairs, as a rule are not very safe since they generally have winder steps