Page 156 - Rappelling
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lanyard. The worker pulls on this (and can use a   the entire time. One trick I teach to military special
                     foot sling for steep terrain if needed) simultaneously   forces is to clip the rope from the brake side of the
                     pulling up slack through the ABD. It’s a simple sys-  Rig up to a small pulley at the mechanical ascender,
                     tem, but very safe and effective, as the ABD remains   so now you can pull down on the rope as you stand
                     on the rope both for descent and ascent, and the   up, each time with a 2:1 pulley hoist, using brain
                     backup ASAPsorber is in place on the safety line   over brawn.


















































                     Here the worker has clamped a mechanical ascender to the yellow rope, attached to his harness with
                     a lanyard made of nylon rope. The Rig descender stays on so that he can use it to take up the slack
                     as he ascends the rope; it locks off when he hangs on it. If the slope were steeper, he could attach one
                     etrier to the top ascender and use the foot sling to stand in, pulling up rope through the Rig descender
                     as he simultaneously stands up.



                                                                  Single Rope Rappel Devices for Fixed Lines    145








            Rappelling_i-174_3pp_CS55le.indd   145                                                         7/24/13   10:18 AM
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