See 422.18, 314.27(B), and (D)

Rock-screws??? [Linked Image]

#10 X 1 1/2" in the very least, if not larger. A big fan - 1/4" lags. A real big fan - 1/2" bolt.

[This message has been edited by e57 (edited 12-06-2006).]

Mark Heller
"Well - I oughta....." -Jackie Gleason