2 x 14 Stair Stringers
The 2 x 14 will give you a little more support after the
stringer is cut you will have between 7 and 8 inches of wood left for
the main support of the staircase. If you are going to have a longer
stringer span with no support like a wall underneath a 2 x 14 will give
additional strength to the stairs. Engineers are using 2 x 14 stringers
more often now in residential home construction slowly replacing the
2 x 12 stair stringers.
Stair Stringer Layout
Stair Stringers