Fire Protection - A Rated Steel Decks & Bulkheads (Offshore)
 
The specified thickness of Rockwool Firebatt 825 to be applied to A - rated steel divisions using 2.5 mm (min.) diameter welded steel pins and 38 mm (nom.) diameter spring steel washers at 330 mm maximum centres.

Excess pin lengths may be cropped, bent over or capped. Adjacent Batts to be tightly butted and the joints in 2 - layer systems to be staggered. The whole to be further supported by wire mesh.