A buddy of mine "found" an old set of indoor stairs leading from his
basement to his living floor. Only problem is, the stairs are topped by a
floor introduced during a later reno rendering the stairs useless. He wants
to re-commission them.
Intuition says it's simple....cut out the floor, build a "landing" for the
framing and hinge the thing (trap door style) so it opens exposing the
staircase when it's needed. Sure, this could be done but it ends up being
ugly with a mess of sharp edges and framing lumber etc. He wants a "neat"
way of doing it...
I got to thinking about torsion boxes. Specifically, I was wondering if
instead of the structure offered by a typical 2/4" plywood floor over 2/8's
on 16" centers, if a replacement panel could be made using torsion box
construction. My thinking is that instead of a composite thickness of 10
(ish) inches we may be able to cut this in half and instead of an ugly
"underneath" exposed when the panel (trap door) is up it would be a finished
sheet of ????? On top of that, I think it would just be plain cool to have
Construction thoughts to date...far from finalized and no, I've not done any
load calc's (yet):
3/4 cabinet grade ply on top, frame work of 1x4's (on edge) on ?? inch
centers half-lapped and a 1/4" cabinet ply bottom skin all stapled and glued
built in a makeshift vacuum press (can you say shop vac?)
Concerns. Total width span is relatively small...say 34" wide. Total length
is about 72". I'd be concerned that even though the floor may BE strong, it
would FEEL or sound weak. It would be pretty easy to incorporate a stiff leg
but still, I can't help wondering if people would notice and be wary....