ISO 4302:2016
Cranes — Wind load assessment
ISO 4302:2016 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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Foreword
1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviated terms
4 Wind pressure
5 In-service wind
5.1 General
5.2 Action of in-service wind on suspended load
5.3 Wind load calculations
5.4 Shape coefficients for individual members, frames, etc
5.5 Shielding factors — Multiple frames or members
5.6 Wind loads on individual members (inclined to the wind direction)
6 Out-of-service wind
6.1 General
6.2 Loads due to out-of-service wind
6.3 Equivalent static out-of-service wind pressure
6.4 Wind loads on individual members (inclined to the wind direction)
6.5 Storm wind maps
Annex A (informative) Reference storm wind speeds
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviated terms
4 Wind pressure
5 In-service wind
5.1 General
5.2 Action of in-service wind on suspended load
5.3 Wind load calculations
5.4 Shape coefficients for individual members, frames, etc
5.5 Shielding factors — Multiple frames or members
5.6 Wind loads on individual members (inclined to the wind direction)
6 Out-of-service wind
6.1 General
6.2 Loads due to out-of-service wind
6.3 Equivalent static out-of-service wind pressure
6.4 Wind loads on individual members (inclined to the wind direction)
6.5 Storm wind maps
Annex A (informative) Reference storm wind speeds
Bibliography