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General Climbing Discussion

Topic Date User

tyrolean traverse 19-Nov-2011 At 11:57:54 PM Cool Hand Lock

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3% stretch in a verticle hang with body weight. Dweebs. Horrizontal will increase the load on the anchors/rope exponentially and stretch the rope heaps more.

I've set horrizontal tyroleans at work. Use cable(steel wire rope(SWR)), it'll still stretch. 5%sag ish as it gets tighter, it stretches more... 5%, 5%, 5%, 5%. Unless your weight is negligable compared to the weight of the tyrolean rope itself. 100kg person x 5%sag = 2000kg on the anchors. Trying bouncing a bit when your hanging on it.

I've seen 80mm SWR stretch (@ 50,000pound miles). And once changed 6x185mmSWR because it stretched. (With 5000reps at 1200ton)

I've also snapped 11mm 'static' at work, it ferkin stretched heaps (20%?) before it went 'twang'.