AS 5224:2021 Cranes – Proof of competence of steel structures (ISO 20332:2016, MOD).
AS 5224 sets forth general conditions, requirements, methods, and parameter values for performing proof-of-competence determinations of the steel structures of cranes based upon the limit state method. It is intended to be used together with the loads and load combinations of the applicable parts of ISO 8686.
This International Standard is general and covers cranes of all types. Other International Standards can give specific proof-of-competence requirements for particular crane types.
Proof-of-competence determinations, by theoretical calculations and/or testing, are intended to prevent hazards related to the performance of the structure by establishing the limits of strength, e.g. yield, ultimate, fatigue, and brittle fracture.
According to ISO 8686-1 there are two general approaches to proof-of-competence calculations: the limit state method, employing partial safety factors, and the allowable stress method, employing a global safety factor. Though it does not preclude the validity of allowable stress methodology, ISO 20332 deals only with the limit state method.
Proof-of-competence calculations for components of accessories (e.g. handrails, stairs, walkways, cabins) are not covered by this International Standard. However, the influence of such attachments on the main structure needs to be considered.
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 148-1:2009, Metallic materials — Charpy pendulum impact test — Part 1: Test method
ISO 273:1979, Fasteners — Clearance holes for bolts and screws
ISO 286-2:2010, Geometrical product specifications (GPS) — ISO code system Jar tolerances on linear sizes — Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts. Corrected by
ISO 286-2:2010/Cor 1:2013.
ISO 404:1992, Steel and steel products — General technical delivery requirements
ISO 898-1:20 13, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts, screws and studs with specified property classes — Coarse thread and fine pitch thread
ISO 4042:1999, Fasteners — Electroplated coatings
ISO 430 1-1:2016, Cranes and lifting appliances — Classification — Part 1: General.AS 5224 pdf download.