Manitowoc Grove GMK6300L Operating Manual page 769

G
Operating Manual GMK6300L
Load-bearing area
•
Now calculate the required load-bearing area.
•
Check that the surface of the outrigger pad (
calculated ground bearing area. If the surface of the outrigger pad is
smaller, you will need to enlarge the load-bearing area.
Danger of overturning if the load-bearing area is too small!
Ensure that the actual load-bearing area is at least as large as specified in
the table.
This prevents the ground giving way and the truck crane overturning.
Example for calculating the required load-bearing area:
If the outrigger pressure is 25 t and the ground has a bearing capacity of 40 t/m
then the required ground bearing area for this supporting cylinder is 0.625 m
2
(= 6,250 cm ).
If the outrigger pad has a surface of 2,000 cm
load-bearing area by placing packing under the outrigger pads;
3 112 xxx en
12.2 Choice of a suitable positioning site
à
p. 1 - 14) is larger than the
2
, you would need to enlarge the
à
Rigging work
2
.
2
p. 12 - 40.
12 - 11