8 replies to this topic

[JOHN PATTERSON]

Does any body have a 1 hour rated drywall detail for a Two-family dwelling unit that they would be willing to share?

[Michael Collazo]

Interior or exterior? You can do a UL U305 which is one of the most common ones. What matters most with fire rated assemblies is in what direction you need protection. Most of the UL's will only indicate exposure from 1 side. So watch out for that.

[GENE GILES]

John I have a few different versions in SP how can I get them to you?

[Mark Petri]

Look up USG or any of the gypsum companies for their wall assemblies. Most will allow a PDF or DWG download which can always be cleaned up.

[Steve and Carla Farnam]

Per Mark "Look up USG or any of the gypsum companies for their wall assemblies. Most will allow a PDF or DWG download which can always be cleaned up."

 

Link https://www.usg.com/...assemblies.html

Attached Files

•  w-p-1-04 - u305.pdf   95.12KB   32 downloads

[JOHN PATTERSON]

_{Thanks Michael. I am looking for 1 hour interior vertical section fire wall to separate a  one story two family dwelling unit. My email is residentialdesign@msn.com}

[JOHN PATTERSON]

Thanks every body for your response's. I am aware of U305, was looking more for a specific drawing rather than the generic drawing that is in the UL library. 

[Dennis Hilborn]

Thanks every body for your response's. I am aware of U305, was looking more for a specific drawing rather than the generic drawing that is in the UL library. 

Then you're just trying to make it more complicated than it is.  That is a 1 hr. firewall.

[Kevin Rabenaldt]

There are many ways to achieve a 30 min, 1 hr, 2 hr, etc rated fire walls.  The testing of materials in a controlled way is used to make up a particular wall and its rating.  The type of materials used determines the rating.   USG site, as mentioned, has a lot of the assemblies using different wall setups.  But remember, a rating can also depend on how the penetrations are sealed .  I recently did a 1 hr rated wall for a duplex where the builder wanted to use 3 layer 2x4 wall so all penetrations occurred in the outside walls and he did not have to worry if the electrician and plumber sealed the penetrations properly.