3.9.23. Pump jack scaffold: In addition to the standards prescribed in section 3.9.22, every pump jack scaffold shall:1° be designed to support, in addition to the dead weight, 3 times the maximum load allowed without damage to any of its components;
2° be used by not more than 2 workers at the same time between 2 masts;
3° have masts made out of a material other than wood;
4° be equipped with jacks designed to prevent any accidental slippage of the platform alongside the masts; and
5° when the work platform passes in front of an intermediate anchoring point, be equipped with a new anchor installed one and a half metres under the platform, before removing the intermediate anchoring.