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Table I. Safety Factors on Land for Various Stack Heights on Land with Container Corner Post Capacity of 190,480 lbs (86,400 kg) | |||||
Number of Containers Stacked on One | Total Height of Stack | Safety Factor on Corner post loading | |||
8 | 9 | 1.80 | |||
9 | 10 | 1.60 | |||
10 | 11 | 1.44 | |||
11 | 12 | 1.31 | |||
The table shows that we can stack 9-on-1 on land, and maintain a safety factor of greater than 1.5. | |||||
Table II. Stack Heights on Land forVarious Detector Densities with Container Corner Post Capacity of 214,290 lbs (97,400 kg) | |||||
Number of Containers Stacked on One | Total Height of Stack (m) | Safety Factor on Corner Post Loading | |||
with payload density = 0.60 g/cc (22,150 kg gross) | with payload density = 0.66 g/cc (24,000 kg gross) | with payload density = 0.75 g/cc (27,150 kg gross) | with payload density = 0.85 g/cc (30,480 kg gross) | ||
8 on 1 | 23.3 | 2.20 | 2.03 | 1.80 | 1.60 |
9 on 1 | 25.9 | 1.95 | 1.80 | 1.59 | 1.42 |
10 on 1 | 28.5 | 1.76 | 1.62 | 1.43 | 1.28 |
11 on 1 | 31.1 | 1.60 | 1.48 | 1.30 | 1.16 |
Conclusion:Stacking ISO containers 10 high on land is reasonable, and stacks as high as 12 may be possible depending on the type of container purchased and on the loading of the container with Off-Axis detector elements. For a final detector design, good engineering practice would require that the corner posts of the selected containers be loaded to failure to more accurately determine the safety factor of the stacked array. |
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