What would be the results of tests done with 80 kg on one strand of a half rope?
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The impact force for factor 1.77 standard falls:
TANGO 8.5 mm on 1 strand with 80 kg
F = 9.2 kN
max. number of falls before break: 3
SALSA 8.2 mm on 1 strand with 80 kg
F = 9 kN
max. number of falls before break: 2
PASO 7.7 mm on 1 strand with 80 kg
F = 8.5 kN
max. number of falls before break: 2
This means that with half ropes, it is possible to separate the 2 strands and clip only one strand several times to limit drag on a route, and be able to fall in this situation.
Attention: this does not mean that the belayer can easily stop a big fall on a single strand. It is also essential to beware of sharp edges.
