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Volute
A volute is a stair part that is installed at
the starting step in a set of stairs. The
volute forms a spiral handrail at the
beginning of the handrail
Goose Neck
Goose neck is a stair part that is part of
the handrail. The goose neck is normally
used a stair landing that makes a turn
and requires a two or three step up in the
handrail.
Riser
The stair riser is the vertical part of a set of
stairs. The riser is the kick board and is
normally between 7 1/2 inch and 8 inch in
height.
Rise
The rise in a set of stairs is the total sum of
the risers in a set of stairs. If a set of stairs
has 16 risers and each riser is 7 1/2
inches, the total rise of the set of stairs will
be a height of 120 inches
Newel Post
A newel post is the larger post that the
handrail is attached. Normally there will be
a starting newel post and intermediate
newel posts in a set of stairs.
Tread
The stair tread is the horizontal part of a
set of stairs and is the step. The stair tread
is normally twelve inches in width or depth.
Run
The run of a set of stairs is the sum of the
length of all the stair treads. Normally the
tread cut on a stair stringer is 10 inches. If
a set of stairs has 15 treads, the stair run
will be 150 inches.
Stringer
Stair Stringer refers to the pieces of lumber
that is cut out to form the actual stairs. The
stringers are normally cut out of 2 x 12's. A
normal set of residential stairs should have
at least three stringers. There are building
codes that dictate the min and max heights
and widths of risers and treads
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