Advice on 1 hour fire rated party wall

[hohingday]

Hi,

We are building a timber frame party wall with a min 50mm cavity in between and have been asked to provide a 1 hour fire resistance.

We have had conflicting advice about whether a double layer of plasterboard on both sides would provide the sufficient 1hour fire resistance, can anyone provide some advice?

Thanks!

 

[Alastairreid]

http://www.british-gypsum.com/techn...resistance-performance-of-gyproc-plasterboard

 

[hohingday]

Thanks for the link, this seems to hit the mark

"Two layers of board (Soundbloc) each side of 75mm x 38mm timber studs at 600mm centres with Gypframe RB1 Resilient Bars fixed horizontally to one side at 600mm centres. 50mm Isover Acoustic Partition Roll (APR 1200) in the cavity. Linings as in table."

 

[hohingday]

Does anyone where I can find some information on the fire rating of a single skin thick brick wall? Thanks!