• 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.

11" wide firewall -what size rated door jamb?

C

CADGURU

REGISTERED
Joined
Sep 18, 2017
Messages
5
Location
MICHIGAN
i have a ul u336 area separation firewall with a width of 11-1/2" and trying to find a detail for the door jamb. should the jamb be the fill 11"+ wide or can it be a standard rated jamb fire caulked into the framed opening with gyp. board returns and the 2" liner panel tight to the inside of the frame?

the fire inspector gave no direction on what he wanted to see and a custom frame is more expensive so the owner likes the standard option. thoughts?
 
Frame has to be rated

Would say does not have to fill entire 11 1/2.

No Fire Stop Caulk,,, install rated frame per manufacture
 
I ordinarily show the liner panels to the throat of a standard frame. Then return the gypsum board into the opening.
 
SH225 said:
I ordinarily show the liner panels to the throat of a standard frame. Then return the gypsum board into the opening.
Click to expand...
Same. The jamb attaches to the 2" center gyp assy. The door must be structurally independent also so it can only attach to the center which is supported by burn clips. Theoretically it should stay in place if either side collapses.
 
  • Like
Reactions: cda
redeyedfly said:
Same. The jamb attaches to the 2" center gyp assy. The door must be structurally independent also so it can only attach to the center which is supported by burn clips. Theoretically it should stay in place if either side collapses.
Click to expand...
Missed that

area separation firewall
 
CADGURU said:
i have a ul u336 area separation firewall with a width of 11-1/2" and trying to find a detail for the door jamb. should the jamb be the fill 11"+ wide or can it be a standard rated jamb fire caulked into the framed opening with gyp. board returns and the 2" liner panel tight to the inside of the frame?

the fire inspector gave no direction on what he wanted to see and a custom frame is more expensive so the owner likes the standard option. thoughts?
Click to expand...
Will the jamb be centered on the 11" or flush to one side? if flush will the face of door be more than 8" from the wall on one side?
 
ADAguy said:
Will the jamb be centered on the 11" or flush to one side? if flush will the face of door be more than 8" from the wall on one side?
Click to expand...
The frame should be centered. The inset to a door panel in a wall like this is typically about 3 inches on the pull side and 7 inches on the push side.
 
You must log in or register to reply here.
Back
Top