Page 72 - Rappelling
P. 72
American Triangle
Load per anchor
with 100 lbs. of force
Bottom V Rigging Triangle
Angle Rigging
30 degrees 52 lbs. 82 lbs.
60 degrees 58 lbs. 100 lbs.
90 degrees 71 lbs. 131 lbs.
120 degrees 100 lbs. 193 lbs.
150 degrees 193 lbs. 380 lbs.
The American Triangle rigged
at a rappel anchor. Avoid rigging
with a triangle configuration—it
adds unnecessary forces to your
anchor points. This anchor is not
This diagram illustrates how a 100-pound redundant because it relies on a single
load is distributed between two anchor points component—the red cord—which, even
at various angles. Keep the angle between though it’s looped twice through the bolt
two anchors as narrow as possible, striving hangers, if one strand of the cord were
for under 60 degrees. At 120 degrees the load cut through, the entire anchor system
is 100 percent at each anchor! Think of 0 to 60 would fail. Stick to a V configuration for
degrees as ideal, 60 to 90 degrees a caution lower loads.
zone, and over 90 degrees a danger zone.
Rappel Anchors 61
Rappelling_i-174_3pp_CS55le.indd 61 7/24/13 10:16 AM
