Choice Of A Suitable Positioning Site; Determining The Required Load-Bearing Area - Manitowoc Grove GMK4100L-1 Operating Manual

12.2
12.2.1
Operating manual
GMK4100L-1

Choice of a suitable positioning 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;
– Observe the required safe distances to slopes and pits;
– If there is a danger of it becoming charged with static electricity, earth the
à
truck crane; p. 12 - 15.
– Keep a safe distance to electrical cables;
– Choose the site such that the unevenness of the ground can be compen-
sated for by adjusting the outrigger cylinders. Maximum hoist of the out-
à
rigger cylinders;
– Choose a location where it is possible to keep the working radius to a min-
imum and where no obstacles are within the slewing range of the crane.

Determining the required load-bearing area

The stability of the truck crane depends in the first instance on the load bear-
ing 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.
Load-bearing area m
Outrigger pressure
•
Determine the outrigger pressure for the operation planned using the
Outrigger pressure table .
à
p. 12 - 11.
p. 1 - 17.
Outrigger pressure (t)
2
( ) ------------------------------------------------------------------------------------------------------------------------
=
Load bearing capacity of the ground
3 302 690 en
12.2 Choice of a suitable positioning site
à
p. 12 - 14.
à
p. 12 - 15.
Rigging work
 
t
------- -
 
2
m
s
12 - 11