Part 4: Requirements of designers

4.1 Requirements

In addition to the relevant sections of part 3, designers of cranes shall also ensure that:

1. the crane is designed for the operating conditions to a standard listed in Appendix C: Reference standards and documents accepted for use in New Zealand in connection with cranes
2. the design includes calculations for seismic influences, ice, snow and wind loadings and design lifewhere applicable for the type of cran
3. the design verification, fabrication inspection requirements and safe working load are determined in accordance with the specific design standard for that particular crane, regulation 18 of the regulations and the requirements of this code
4. where two or more ropes are used in a system, means are provided for ensuring that tensile forces in the ropes are distributed in the designed proportions. Arrangements entailing reverse bends shall be avoided as far as possible. A rope reeving diagram shall be provided with the crane.
5. derricking ropes are of sufficient length to permit the jib to be raised from or lowered to the horizontal position during the erection or inspection of the crane
6. where ropes are used to support a fixed offset fly jib, the distances between the support point centres are specified by the manufacturer to enable the fly jib offset to be correctly set under working conditions.

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