13.2 SCOPE

This section covers manually operated hydraulic or mechanical jacks used to raise or lower loads vertically, supported on either the head or toe. The principles set out in this section of the code may also be applied to independent hydraulic cylinder (ram) and pump units when they are used for vertical jacking operations.

This section of the code excludes jacks designed so that the supporting head moves through an arc when raising or lowering, jacks designed for a specific function such as re-railing locomotives, jacks with traversing bases, trolley jacks, pit-prop or scaffold jacks, drawbar jacks, aircraft tripod jacks, vehicle jacks, pole jacks and jacks used for raising and lowering portable buildings and containers. The use of hydraulic cylinder (ram) and independent pump units for purposes other than vertical jacking operations is also excluded. It is however acknowledged that these items may have much in common with the jacks described in this section of the code and the recommendations may be equally applied to them when they are used in certain applications.