5.4 The High Structure
5.4.1 The integrity of the high structure shall be such that the required operations can be performed safely, this includes, but is not limited to:
1) The loading of the structure e.g. men, equipment and materials;
2) The environmental conditions;
3) The forces imposed upon it by any means of access which are connected to it;
4) The forces imposed upon it by any lifting or winching operations in which the high structure serves as an anchor point, counterweight or tie point.