It appears to me that per IBC 2012 table 722.4.1(1) a layer of normal 3 5/8" thick solid brick would have more than 1 hour rating by itself. Does anyone know why many UL wall assemblies, especially wood and metal stud walls, that include brick veneer provide only 1 hour rating? Shouldn't they provide more than 1 hour? UL V414 is an example.
-
Welcome to The Building Code Forum
Your premier resource for building code knowledge.
This forum remains free to the public thanks to the generous support of our Sawhorse Members and Corporate Sponsors. Their contributions help keep this community thriving and accessible.
Want enhanced access to expert discussions and exclusive features? Learn more about the benefits here.
Ready to upgrade? Log in and upgrade now.
Brick Veneer Fire Rating
- Thread starter lee1079
- Start date
steveray
SAWHORSE
Weakest link.....?....Non brick side burns first....
tmurray
SAWHORSE
Our code requires the rating from the inside on exterior walls. Based on the rating of 1 hour for exterior and 3 hours for interior, I would assume this is the same in ICC based codes.
mtlogcabin
SAWHORSE
The wall is rated from the fire side exposure
7. Exterior Walls
The fire-resistive designs and UL-certified materials for walls and partitions are investigated to ANSI/UL 263, which addresses fire-resistive requirements only with the understanding that their use is intended for interior applications. Where an exterior application of a UL-certified wall or partition design is desired, the local building code and Authority Having Jurisdiction should be consulted to ensure compliance with other code requirements applicable to exterior walls.
[TABLE=border: 1, cellpadding: 3, cellspacing: 1, height: 2155]
[TR]
[TD]V414[/TD]
[TD]3hr interior
1hr exterior[/TD]
[TD]Brick Veneer / Steel Stud,
NON-Loadbearing
[/TR]
[/TABLE]
7. Exterior Walls
The fire-resistive designs and UL-certified materials for walls and partitions are investigated to ANSI/UL 263, which addresses fire-resistive requirements only with the understanding that their use is intended for interior applications. Where an exterior application of a UL-certified wall or partition design is desired, the local building code and Authority Having Jurisdiction should be consulted to ensure compliance with other code requirements applicable to exterior walls.
[TABLE=border: 1, cellpadding: 3, cellspacing: 1, height: 2155]
[TR]
[TD]V414[/TD]
[TD]3hr interior
1hr exterior[/TD]
[TD]Brick Veneer / Steel Stud,
NON-Loadbearing
- (1) layer ⅝ in. (15.9 mm) thick gypsum wallboard
- 3⅝ in. (92 mm) wide, 1⅝ in. (41 mm) legs, 20 gage steel studs, spaced 16 in. (406 mm) o.c., studs cut in. (19.1 mm) less than assembly height
- 2 in. (51 mm) thick foamed plastic (rigid insulation)
- 2 in. (51 mm) air space
- 4 in. (102 mm) nominal clay facing brick laid in mortar with metal ties at 16 in. (406 mm) o.c. max. each way
[/TR]
[/TABLE]