Using
Weightanka
2
‐
11
of
28
Selecting the Installation Site
Contents
Requirements of the installation site.
Danger!
The installation site can affect the safe functioning of the Weightanka system. If the
requirements of the installation site are not met, do not use the system If you are unsure of the
load-bearing capacity of the roof contact a structural engineer before installing the system.
Requirements of the Installation Site
The installation site must meet the following requirements:
Criterion
Requirement
Shape of roof
Only for use on flat roofs.
Permitted roof slope
Max. 5°
Roof surface
For use on mineral felt, concrete, profiled metal
sheets, Asphalt, Stone chippings and single ply
membrane.
The roof surface must be free from loose debris,
oil, grease and algae
Where the system is to be used on a roof that is
covered with stone chippings, all loose stones
shall be removed (e.g. swept with a hard brush)
from the area where the system will sit AND for a
distance of 2.5 meters in EACH direction in which
it may travel when arresting a fall before
assembly of the system
Bearing Pressure of unit onto the
roof
Six Weight Version - Min. 496 kg/m
2
Eight Weight Version - Min. 595 kg/m
2
Twelve Weight Version - Min. 794 kg/m
2
