Safety - Responsibilities of the employer
1 - 12 07/2012Original operating instructions
Permissible ground
pressure
The maximum permissible ground pressure of the subgrade is
authoritative for the secure operation of the machine. The guidelines in
the following table must be taken into consideration for applications
planning.
WARNING
If justified doubt exists as to the safe working load of the ground on
location, a ground inspection must be carried out prior to start of
machine operation.
Check the ground for hidden problems such as melting ice or
undercutting.
Type of ground
Perm.
ground
pressure
in [kg/cm
2
]
A) Stirred ground that has not been packed 0 — 1
B) Grown in, obviously untouched ground
1) Mud, peat, muck, topsoil 0
2) Non-binding, sufficiently solid, seasoned ground
- Fine to medium sand
- Coarse sand to gravel
1,5
2,0
3) Cohesive soil
- soggy
- soft
- firm
- semi-solid
- solid
0
0,4
1,0
2,0
4,0
4) Rock that has not been weathered, with few
fissures and is well preserved
15 — 30
C) Artificially packed surface
1) Asphalt 5 — 15
2) Concrete - Concrete group I
- Concrete group II
50 — 250
350 — 550
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