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Fire Rated Gyp. Board

north star

north star

MODERATOR
Joined
Oct 19, 2009
Messages
4,596
> * > * >

Greetings all !

I have a project requiring a 2 hr. fire rated
partition...….The plan is to install 2 layers of
5/8" Type X gyp. board, in "staggered joint
layers" on each side of the metal framing.

A question \ desire to use Moisture Resistant
Gyp. Board as part of the partition assembly
has been submitted.

Q1): Is there a fire rated, moisture resistant
gyp. board product out there ?
Q2): If there is not a fire rated, moisture
resistant gyp. board out in the market, what
would be the recommend [ i.e. - hopefully Code
compliant ] method to attain a 2 hr. fire rated
partition with moisture resistant gyp. as part of
the overall partition assembly ?
Q3): As a possibility, could 2 "staggered layers"
of 5/8", moisture resistant gyp. board be installed,
and then apply a 2 hr. fire rated ceramic based
paint on both sides of the partition ?

Thanks for your input !

< * < * <
 
Get the Purple stuff::

Gold Bond (Common: 5/8-in x 4-ft x 8-ft; Actual: 0.625-in x 4-ft x 8-ft) Fire-Shield PURPLE XP Drywall Panel
 
I think every gypsum board manufacturer provides a moisture-resistant panel with a Type X core.
 
# ~ # ~ #

Thank you all VERY MUCH !

I will research the links and suggestions provided. :)

# ~ # ~ #
 
@ + @ + @

Continuing with this thread, ...I am requesting information
on a planned 2hr. fire rated wall partition.

The variables:
This wall partition will be approx. 25 - 27 ft. in height,
...floor to underside of roof with all penetrations sealed,
installing a 2 hr. fire rated metal door with panic hardware
and fire rated elec. junction boxes and conduit...…..Because
of the height, the plan is to brace the framing to the existing
steel girders or underside of roof, and to install 2 layers of
5/8" gyp. board and seal completely...…...Also, to install
fire rated mineral wool in the wall cavity.

I looked at the U419 assembly, but did not see anything
regarding any height limitations.

Q1): What size & gauge of metal studs would be required
to install a partition of this height, and to support 4 layers
of 5/8" gyp. board [ 2 each side ] ?

Q2): Can wood studs be used ?......If so, what size ?
Q2-A): If wood is acceptable, would FRTW be required ?

Q3): Can you please provide an approved fire rated assembly
for the metal or wood ?

Thanks for your input !

@ + @ + @
 
north star said:
@ + @ + @

Continuing with this thread, ...I am requesting information
on a planned 2hr. fire rated wall partition.

The variables:
This wall partition will be approx. 25 - 27 ft. in height,
...floor to underside of roof with all penetrations sealed,
installing a 2 hr. fire rated metal door with panic hardware
and fire rated elec. junction boxes and conduit...…..Because
of the height, the plan is to brace the framing to the existing
steel girders or underside of roof, and to install 2 layers of
5/8" gyp. board and seal completely...…...Also, to install
fire rated mineral wool in the wall cavity.

I looked at the U419 assembly, but did not see anything
regarding any height limitations.

Q1): What size & gauge of metal studs would be required
to install a partition of this height, and to support 4 layers
of 5/8" gyp. board [ 2 each side ] ?

Q2): Can wood studs be used ?......If so, what size ?
Q2-A): If wood is acceptable, would FRTW be required ?

Q3): Can you please provide an approved fire rated assembly
for the metal or wood ?

Thanks for your input !

@ + @ + @
Click to expand...


Why the wall???

Do you have to comply for "structural stability"
 
$ * $ * $

I will be separating an existing S-1 Occ. Group
from a new A-3 Occ. Group that is unsprinkled.

In the `18 IBC, Sect. 708.4 - Continuity, ...requires
"attachment to the floor and underside of the roof".

There has been a voiced concern of the weight of
all of the 2 layers of 5/8" Type X gyp. board being
applied to both sides; as well as, the partition cavity
being filled with mineral wool.

I do not know what you mean by "comply for
structural stability"...…..This proposed partition will
be non-load bearing.

Naturally, the owner does not want the wall to
topple over \ buckle.

$ * $ * $
 
north star said:
$ * $ * $

I will be separating an existing S-1 Occ. Group
from a new A-3 Occ. Group that is unsprinkled.

In the `18 IBC, Sect. 708.4 - Continuity, ...requires
"attachment to the floor and underside of the roof".

There has been a voiced concern of the weight of
all of the 2 layers of 5/8" Type X gyp. board being
applied to both sides; as well as, the partition cavity
being filled with mineral wool.

I do not know what you mean by "comply for
structural stability"...…..This proposed partition will
be non-load bearing.

Naturally, the owner does not want the wall to
topple over \ buckle.

$ * $ * $
Click to expand...


Sorry out of 2015 ibc 706.2, but does not apply to you,


Have you looked at a dens glass type two hour wall???
 
* > * > * > *

I am reviewing the GA 600 Design Manual,
`12 Edition now...….Also, reviewing Table 721.1(2),
Item Number 15-1.16 in the `18 IBC for options.

* < * < * < *
 
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