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ISO 4302

2nd Edition, October 1, 2016

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Cranes - Wind load assessment

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Description / Abstract:

This International Standard specifies the assessment of wind loads on cranes.

It establishes general methods for calculating wind loads (for in-service and out-of-service conditions), which are included in the load combinations stated in ISO 8686-1 and used for proofs of competence such as those given in ISO 20332 for the structural components of cranes.

It provides a simplified method of calculation and assumes that

— the wind may blow horizontally from any direction,

— the wind blows at a constant speed,

— there is a static reaction to the wind load applied to the crane structure.

It includes built-in allowances for the effects of gusting (fluctuation in wind speed) and for dynamic response.

It gives guidance on when to secure the crane for out-of-service conditions.
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