2 hour fire separation needed
2 hour fire separation needed
(OP)
Please Help! I need a solution to this problem. I need to create a 2 hour fire separation between a lower level and the space above. The current floor / ceiling assembly is 3/4" T&G over bar joists. Bar joists measure 9.5" tall, x 3.25" wide on 16" centers... The owner's goal is create the fire separation on the bottom side of the assembly only with dry wall layers but everything i find, calls for a layer of concrete on the top..
How can we qualify a 2 hr separation on the underside only?
An alternative option to qualify would be 3/4" layer of gypcrete on top of the t&g and intumescent paint on the bottom side leaving the joists exposed underneath..
Please help.. Ive search every assemble on line i can find
How can we qualify a 2 hr separation on the underside only?
An alternative option to qualify would be 3/4" layer of gypcrete on top of the t&g and intumescent paint on the bottom side leaving the joists exposed underneath..
Please help.. Ive search every assemble on line i can find






RE: 2 hour fire separation needed
I would go with the gypcrete. It is done quite often in this type of construction, with the added benefit of a level floor.
DaveAtkins
RE: 2 hour fire separation needed
Dik
RE: 2 hour fire separation needed