: At least 17' if you just want to drop the cash.

: Or you can apply a couple coats of shellac to your plywood before
: you make a box beam,
: Then a couple more coats on the finished and full length beam will
: ensure little moisture
: absorption.

: The nice thing about the plywood box beams, I suggest you build in
: the plans, is they are
: multipurpose. I've use mine numerous times as scaffolding between
: ladders to work on my house.

: Screw two 8 footers on horses and attach a sheet of plywood to have
: a large work platform to
: work on a ceiling.

: Whatever floats your boat!

: Rob

I never thought of the shellac...and yeah, it would be cheaper. You know far better than I do, so I should take your advice! I do expect to be posting on here and making phone calls during the build, so I should listen to the guys that do it more often than me