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 sand to medium sand 15 N/cm² (21.75 psi)
Coarse sand to gravel 20 N/cm² (29 psi)
Compacted gravel 25 N/cm² (36.25 psi)
3. Cohesive soils:
Mushy 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)
Determining necessary support area (use metric or imperial consistently):
Support area A [cm² or in²] =
Supporting force F [N or lbs]
Load capacity of the soil [N/cm² or psi]
The supporting force values are specified in chapter 13, ‘Technical Sheets’.
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