Rigging work
12.2 Selecting the suitable site
Operating manual 3 302 819 en 12 - 9
GMK3060
13.12.2018
12.2 Selecting the suitable site
Choose the position of your truck crane at the site with care. Observe the
following aspects:
– Check that the ground has sufficient load bearing capacity. You may need to
enlarge the load-bearing area;
à p. 12 - 9.
– Observe the required safe distances to slopes and pits;
à p. 12 - 12.
– If there is a danger of it becoming charged with static electricity, earth the truck
crane;
à p. 12 - 13.
– Keep a safe distance away from electrical lines;
à p. 12 - 13.
– Choose the site such that the unevenness of the ground can be compensated
for by adjusting the outrigger cylinders. Maximum stroke of the outrigger cylin-
ders;
à p. 1 - 15.
– Choose a location where it is possible to keep the working radius to a minimum
and where no obstacles are within the slewing range of the crane.
12.2.1 Determining the required load-bearing area
The stability of the truck crane depends in the first instance on the load bearing
capacity of the ground. The load bearing capacity of the ground and the occurring
outrigger pressure determine the load-bearing area required for the operation.
Outrigger pressure
• Determine the outrigger pressure for the operation planned using the Outrigger
pressure table.
s
Load-bearing area m
2
()
Outrigger pressure (t)
Load bearing capacity of the ground
t
m
2
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