Palfinger PK9001-EH, Руководство оператора

Страница: 109 / 184

Chapter 7 Preparing for crane operation
103
If the vehicle is equipped with additional supports, they must be extended as described below. The
vehicle is only stable with the supports fully extended (crane support and additional support if present).
All safety notes of chapter 2 shall be observed.
Ground condition
Check the floor for the following:
x
Stability.
x Cavities (manhole covers, pipelines, etc.).
x
Sufficient distance to any drop offs, holes, ditches, etc.
x Ground inclination 5° maximum in all directions.
Increase the support area according to the supporting surface conditions (refer to table) or find a
suitable supporting surface.
Max 5°
Ground pressure
Ground pressure by support jacks max. 400 N/cm² (58 psi).
Permissible ground pressure under DIN 1054
Heaped up soil, that was not stabilized artificially. 0 - 10 N/cm² (0-14.5 psi)
Asphalt 20 N/cm² (29 psi)
Grown, obviously untouched soil.
1 Mud, turf, marsh 0 N/cm² (0 psi)
2 Incohesive soils:
Fine to medium sand 15 N/cm² (21.75 psi)
Coarse sand to gravel 20 N/cm² (29 psi)
Stabilized crushed stone 25 N/cm² (36.25 psi)
3 Cohesive soils:
Pappy 0 N/cm² (0 psi)
Soft 4 N/cm² (5.8 psi)
Stiff 10 N/cm² (14.5 psi)
Semisolid 20 N/cm² (29 psi)
Hard (solid) 30 N/cm² (43.5 psi)
4 Rock:
Weathered 100 N/cm² (145 psi)