No, not local.
I believe this is it:
502.14 – Fire Resistance of Floors: I-joists spanning a basement require ½” gypsum board or 5/8” wood structural panel. Exceptions: 1) space above sprinkler, 2) located over crawl space with no storage or fuel fired appliances, 3) portions of floor assemblies can be unprotected when complying with the following: 3.1) aggregate area shall not exceed 80 square feet per story, 3.2) fire blocking is installed along perimeter of all unprotected areas, 4) wood floor assemblies using dimension lumber or structural composite lumber equal to or greater than 2” by 10” nominal dimension or approved floor assemblies demonstrating equivalent fire performance.
This mentions it too:
I believe LVLs fall under SCL and thus are exempt.
If you want some interesting reading, it looks like some of the changes might be the result (somewhat) from this research paper:
I guess unprotected I-Joists only lasting 6 minutes with a basement fire makes people nervous and the 1/2 drywall adds 20 minutes. I'd happily take a residential sprinkler system any day of the week (and no, Dominion won't do that! )
Edited by homeav - 2/5/13 at 2:16pm