building studwall 30 minute fire reg

[godwinap]

Would like partition my garage and have been told the stud wall will have to be 30 minute fire proof,
Can you tell me how to achieve this thinking 63mm stud timber insulated with 50 mm celotex what size plasterboard would be read, 9mm, 12.5mm, or fire resistant board.
Just to make it complicated I have a mains gas pipe bottom corner 30 mm from floor and wall how can i overcome this
Many thanks

 

[Doggit]

two layers of 12.5mm plasterboard will normally give 30 minutes fireproof, and 1 layer of 15mm fireboard will give an hours fire resistance. I don't think the gas pipe is relevant, as it was there in the first place, but if you're worried, then box it in. Why are you splitting the garage.

 

[godwinap]

Thanks for your reply. Now thinking of using 1 layer of 12.5 fireline board each side do i have to do anything with the joins where the boards meet. Splitting the garage so ro make astore room

 

[Doggit]

If it's just a general store, then a join is pretty immaterial, but if you've got flammable material in the store, then I'd use 12.5mm plasterboard as well and overlap the joints.