Enerpac SBL1100, Инструкция по эксплуатации и техническому обслуживанию

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Document number: ED. 03622.00.001.R04.ENG
Page 42 of 151
ED.02518.00.001.R08.ENG
Page 42
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Complete the checklist in appendix A “ Checklist for planning a lifting operation ”
with the calculated bearing pressure.
Attention: the exerted ground pressure may never exceed the bearing capacity
of the ground.
Example:
Load to be lifted
1068 metric tons
Timbers: Width 0.10 m
Height 0.10 m
Gap 0.03 m
Measure of one footprint:
Width: Skid width + 2 * Timber height = 0.3 + 2 * 0.1 = 0.5
Length: Unit length + 2 * (Skid height + Timber height ) = 2.76 + 2 * (0.3 + 0.1) = 3.56 m
L * W: 0.5 * 3.56 = 1.78 m
2
Two footprints :
2 * 1.78 = 3.56 m
2
Support ratio:
0.10 / (0.10 + 0.03) = 0.77
Ground pressure
7 . 1 *
77 . 0 * 56 . 3
4 / 20 12 4 / 1068
V
= 176 metric tons /m
2