Deﬁnition of facade height
The distance from the intersection between the roof and the facade to ground level. For access devices, the facade height is calculated where the ascending devices are set up.
For protection devices on the roof, the facade height is calculated where the lowest ground level is measured.
Deﬁnition of roof slope angles
1:10 = approx. 6 degrees
1:3 = approx. 18 degrees