International Organization for Standardization (ISO)
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ISO 4304:1987
Scope
Specifies the conditions to be met when verifying, by calculation, the stability of all crane types defined in ISO 4306-1 that are subject to tilting. It assumes that they are standing on a firm, level supporting surface or track. The sliding of cranes on their tracks is not covered.
ISO 4304:1987 history
1987ISO 4304:1987 Cranes other than mobile and floating cranes; General requirements for stability