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GRIGRI ASCENDING TECHNIQUE
Another efficient and convenient ascending technique involves the use of a Petzl Grigri
Belay device in conjunction with a single handled ascender with an attached foot loop
The combined use of an ascender in combination with an autolocking belay device is
also referred to as RADS for "Rope Ascending Descending System". The Grigri is
attached to the rescuer’s harness and an additional harness attachment is created with
an adjustable tether (e.g. sewn daisy chain) that is rigged directly to the handled
ascender (Figure 153). The rescuer stands up on the foot loop and then pulls on the
braking side of the Grigri (running end of the rope) to progress up the device up the
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rope . This technique generates heavy cyclic loading on the fixed rope being
ascended, therefore ample edge protection needs to be employed to protect the line.
Figure 153- Grigri Ascending Technique
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