We installed a Permentry precast concrete stair, with a Bilco door, and
a 3/0 x 6/8 insulated six panel door at the base of the stair. As you
can see in the photos, we always install a pipe jack on a concrete pad
under the Permentry stair regardless of what type of foundation wall
that you have. You can also see that the Permentry precast stair is
sitting on the foundation of the house.