4 Information on crane operation
4.1 Choice of a suitable positioning site
Safety manual
3 303 022 en
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4.1
1.
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If there are power lines or supply lines (e.g. gas or oil) nearby, then special care
is required and you must take special measures.
Crane operation in the vicinity of power lines
Crane operation in the vicinity of supply lines
Determine the outrigger pressure
Determine the outrigger pressure for the planned operation using the supplied
outrigger pressure table
(is only provided in electronic form).
Check the ground at the site
The ground should be as level as possible in order to be able to level the truck
crane correctly. Choose the site such that the unevenness of the ground can be
compensated for by adjusting the outrigger cylinders. Maximum stroke of the
outrigger cylinders;
à
Supplied operating manual
.
The ground must always have sufficient load-bearing capacity to be able bear the
loads that occur during crane operation. If the ground gives way, your truck crane
may incline or topple over.
If the load-bearing capacity of the ground is not known, you can use a table to find
out the guide values for the load-bearing capacity of the ground;
à
Supplied
operating manual
. If you are unsure about the load-bearing capacity of the
ground, have the ground tested.
Determine the required support surface
The support surface required for the operation is determined by the load-bearing
capacity of the ground and the outrigger pressure that occurs.
Use the formula to determine the required support surface.
Example of how to use the formula;
à
Supplied operating manual
.
s
Support surface m
2
(
)
Support pressure (t)
Load-bearing capacity of the ground
t
m
2
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=
