1 hour fire wall

[chris kennedy]

Plans show an existing 1hr wall, one layer 5/8 rock on each side, 3 5/8 stud. Took quite a while longer than expected to install 7 new outlets.:censored

 

[cda]

Not sure if that is a listed one hour wall

 

[chris kennedy]

Not sure if that is a listed one hour wall

Is that a bit of humor?

 

[pwood]

better get some looong screws for the receptacle! :mrgreen:

 

[codeworks]

ya can't always depend on the prints. Wow, a 2 & 3/4 mud ring.

 

[steveray]

More importantly......how do you patch it and maintain the (3 hour?) rating?

 

[Examiner]

Is it a fire wall or a fire partition or a fire barrier? Fire walls have to remain in place upon the collapse of the building on either side. Fire partitions are often rated partitions used in corridors. Fire barrier are used for occupancy separation and shafts and require the same rating as the wall for their supporting structure. Office software will not let me see picture. I think others have answered your question.

 

[Builder Bob]

Looks like a practice where a three hour rating was required and somebody let them place the required rating on one side of the wall. Often, a common practice when dealing with existing buildings.

3/4" sheet rock with 3 - 5/8" layers of sheet rock ..... Things that make you go Hhhhhmmmmmmm.....

 

[brudgers]

Looks like a practice where a three hour rating was required and somebody let them place the required rating on one side of the wall. Often, a common practice when dealing with existing buildings.

Please tell me you are joking.

 

[Coug Dad]

The Gypsum Association has some interesting 2, 3, and 4 hour rated walls that are asymmetric. WP 1529 and WP 1943 are examples.