EXPOSED RAFTERS OR FLOOR JOISTS
Smoke alarm should be located minimum 200mm away from beam
200mm min.
100mm min.
Dead air space
Beam up to 460mm deep. Note if beam depth greater than 460mm then treat as if it is a wall.
900mm or less
Exposed rafters or floor joists
Dead air space
DEAD AIR SPACE
200mm min. 200mm min.
100mm min.
Dead air space
Smoke alarm Dead air space
Smoke alarm should be located between 200mm and 500mm from the apex
Dead air space
Ceiling line
300mm
200mm
200mm min.
100mm min.
Dead air space 300mm max.
Top of smoke alarm acceptable here where ceiling mount cannot be achieved
Side wall
LANDLORD INFORMATION GUIDE 27