This may be a bit overkill, but I'd hate for a ceiling fan to fall out of the ceiling. I'm currently finishing a project where the building is 40 years old, it's a red iron skeleton with a T-Grid suspended ceiling. It's a beauty salon and several of the girls wanted ceiling fans in their little suites. If my laser level would place the dot on the red iron Z-Purlin then I'd use a 3/8" beam clamp with 3/8" threaded rod attached to the clamp using a 3/8" Teflon nut as a jamb-nut against the beam clamp. I extended the rod to a fan rated 4/0 box on a T-Grid Caddy Bar Hanger. I drilled out the center hole to accommodate the 3/8" rod and attached the rod thru the center hole with a fender washer on both sides of the box and using two Teflon nuts, one on top of the box and one inside the box to sandwich the two washers to the box. The box is stabilized from side to side motion by the Caddy Bar Hanger clipped and screwed to the grid. The grid guy didn't use very many grid wires to hang the grid and I didn't want any weight of the fan being supported by the grid. Where the laser level didn't fall on a purlin, I cut a 2x4 and bolted it under two purlins with 3/8 bolts and drilled a 3/8" hole where the laser level pointed and did a Teflon nut on both the top and bottom of the 2x4 with fender washers top and bottom. The only thing that I thought was hinky, was I had to run the Caddy Bar Hanger to one side of the fan rated box instead of across the center because the threaded rod was in the way. But the Caddy Bar Hanger is not supporting and with and it's only there for standying from side to side motion.
What do you guys think? Overkill or did I do my due diligence?
What do you guys think? Overkill or did I do my due diligence?