GB
20
Recess example
Ci7
Wall made of combustible material
Aerated wall, comprising at least a 50 mm calcium
silicate board and an air space. There must be a 20
mm air space between the building board and the
combustible wall. The air space must allow air to flow
freely along the lower and upper edges (see diagram
to the right).
Wall made of non-combustible material that
is not in contact with combustible material
and therefore has no minimum thickness
requirement.
20 mm Luftspalt
20 mm Air gap
500
20 mm Luftspalt
20 mm Air gap
500
50
20
20 mm Air gap
20
The dimensions are the minimum
!
dimensions, unless otherwise
stated.
20 mm Luftspalt
20
50
Diagram of aerated wall
Two calcium silicate board
battens ensure that the air
space is maintained.
Sealing
Avtätning
Area out min. 200 cm
Area ut min. 200 cm
2
2
Area in min. 200 cm
Area in min. 200 cm
Lastbärande sockel
Load bearing base
2
2