My first thought was «why not put up
whole sheets of plywood and cut grooves in it?»
Not exact matches
I used the same studs,
plywood, and
sheet metal roofing that the other carpenter used, but he put his together according to set
of blueprints that showed all the pieces fit together as a unified
whole.
Remarkably, the
whole thing is a flatpack designed to be cut out
of two
sheets of plywood; you could send this off to a shopbot today and cut it out.
They covered the
whole room with 4
sheets of birch
plywood, cut into strips and nailed down to the existing subfloor!