Aid Climbing is a method of accessing a structure or site where the rope access operative moves by attaching directly to anchor points with special work positioning lanyards, foot-loops and support devices. The method allows workers to climb horizontally underneath the structure, by alternating their weight between two stirrups, and moving the unweighted footloop to a new anchor in the desired direction of travel.
The use of aid climbing techniques enable rope access technicians to reach parts of a structure without the use of ropes, instead fixed anchors (bolts) or movable anchors (slings or beam clamps) may be used. The technician can climb vertically or horizontally in this fashion. The technician needs to have three lanyards (points of contact) so that at any time they maintain two independent points.