Lower stairs are any set of stairs that are going to be
below or beneath another stairway or section of it. The picture below
provides you with an excellent example of a lower stairway. The first
section of the stairs goes up to a landing and then continues, using the
upper stairs, until you reach the upper floor area.
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In a 3-story building you will usually have two
stairways, the stairs taking you from the first floor to the second
floor would be the lower staircase. The stairway taking you from the
second floor to the third floor would be the upper stairs.
In a situation like this, the lower stairs could also be referred to as
the first level or first floor stairway and the upper stairs could be
referred to as the second level or second floor stairway.
Lower Stairway Building Tip: If Possible, make sure that the risers and
treads are the same size in both sections. The building codes aren't
perfectly clear on whether or not a stairway with a landing, needs to
use the same size stair risers.
As a general rule of some, try to keep as much of the stairway as
consistent as possible.
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