The image of a sling straight vs doubled vs girth hitched and it's relative strengths float around and is taken as doctrine. So we tested it.

BD 18mm nylon slings were 22kn MBS found at https://hownot2.store/collections/sli...
Straight (broke 30%+ above MBS or the same as the chart)
Test 1: 29.02kn
Test 2: 27.62kn
Doubled (should get around 56kn)
Test 3: 53.58kn
Test 4:52.26kn
Wrapped 3x (should get around 56kn)
Test 5: 43.90kn
Test 6: 47.76kn
Doubled Twice (should get around 112kn)
Test 7: 78.72kn
Test 8: 82.82kn
Girth Hitch (should get 50% or 14kn)
Test 9: 25.22kn
Test 10: 23.48kn

Girth hitch with a 22kn MBS dyneema sling 15.48kn
Girth hitch nylon sling directly on hanger 9.50kn

➜Reddit Thread https://www.reddit.com/r/climbing/com...
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Intro
00:41 The Test
03:41 Reddit
07:29 Straight
08:02 Doubled
09:04 Wrapped
10:26 Doubled Twice
13:11 Girthed
15:02 Conclusion
17:05 Extra Test
18:48 Ending