ovdrywall
Member
Hi guys, I'm looking for a table that shows the limiting heights for 2 hr fire rated wall, this is a interior partition, composite, 34' 8" avg. height, non-braced, with 2 layers of 5/8" type X fire code gypsum board on each side of the wall.
I found that 600S125-43 (33KSI) studs @ 16"OC, will meet the required height for 1hr assembly UL-419, which states that 1 layer of 5/8" gyp board on each side shall be used to meet rating.
I'm assuming that using and additional layer of gyp. on each side will make the structure stronger and the limiting height even higher, but I can't find any table of limiting heights for this type of wall that prove I'm correct of definitely wrong.
Does anyone here have build a similar wall, or know where I can find more information regarding the metal members I need to use to comply?
for your time, thanks in advance !
Oscar
I found that 600S125-43 (33KSI) studs @ 16"OC, will meet the required height for 1hr assembly UL-419, which states that 1 layer of 5/8" gyp board on each side shall be used to meet rating.
I'm assuming that using and additional layer of gyp. on each side will make the structure stronger and the limiting height even higher, but I can't find any table of limiting heights for this type of wall that prove I'm correct of definitely wrong.
Does anyone here have build a similar wall, or know where I can find more information regarding the metal members I need to use to comply?
for your time, thanks in advance !
Oscar