[Shop-talk] reinforcing roof joists

[TR3driver at ca.rr.com (Randall)]

> Is there any reinforcement I can do either way?

What about running temporary support poles to the floor?  For temporary use,
they don't need to be anything fancy; and wood is a whole lot stronger in
compression than in tension or shear.  A 4x4 (or even a pair of sistered
2x4) will easily carry a lot more than your Datsun body.

-- Randall