AS 5221.1:2021 Cranes一Design principles for loads and load combinations Part 1: General (ISO 8686-1:2012, MOD).
This part of Iso 8686 establishes general methods for the calculating loads and principles to be used in the selection of load combinations for proofs of competence in accordance with ISO 20332 for the structural and mechanical components of cranes as defined in ISO 4306-1.
It is based on rigid body kinetic analysis and elastostatic analysis but expressly permits the use of more advanced methods (calculations or tests) to evaluate the effects of loads and load combinations, and the values of dynamic load factors, where it can be demonstrated that these provide at least equivalent levels of competence.
This part of ISO 8686 provides for two distinct kinds of application:
a) the general form, content and ranges of parameter values for more specific standards to be developed for specific types of cranes;
b) a framework for agreement on loads and load combinations between a designer or manufacturer and a crane purchaser for those types of cranes where specific standards do not exist.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 4302, Cranes — Wind load assessment
ISO 4306 (all parts), Lifting appliances — Vocabulary
ISO 4310, Cranes— Test code and procedures
ISO 20332, Cranes — Proof of competence of steel structures
3 Terms and definitions
For the purposes of this document, the definitions given in ISO 4306 and the following apply.
load or loads
external or internal actions in the form of forces, displacements or temperature, which cause stresses in the structural or mechanical components of the crane
(rigid bodies) study of the movement and the inner forces of systems modelled by elements that are assumed to be non-elastic
(elastic bodies> study of the relative elastic displacements (distortion), movement and the inner forces of systems modelled by elements that are assumed to be elastic.AS 5221.1 pdf download.