BS 2573-2:1980

Cooperating organizations
Foreword
1 Scope
2 References
3 Service life of a mechanism or component
4 Classification of mechanisms
5 Loadings to be considered in the design of
  mechanisms
6 Verification of components
7 Working stresses
8 Selection of components
9 Welding
Appendix A - Typical classification of crane mechanism
Appendix B - Assessment of torque loading or crane
             mechanisms
Appendix C - Determination of fatigue reference stress
Appendix D - Gearing
Appendix E - Derating of hooks
Publications referred to

Classification of mechanisms for all types of cranes based on severity of intended use, loads and load combinations, calculation of stresses, stresses in components and the selection and verification of proprietary items. Appendices give classifications normally associated with different types of cranes, assessment of torque and determination of fatigue reference stresses.

This Part of BS 2573 provides the basis for calculating stresses in components of crane mechanisms and specifies the way in which permissible stresses shall be determined. It also gives rules for the selection of proprietary items where these are used as mechanism components.