Daisy on your belay loop?
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My hubby and I were discussing today if one should girth their daisy onto the belay loop or go through the leg and harness tie ins. He argued that for sport climbing (ie cleaning anchors) the belay loop is fine because it's just static weight. This gives me the heebie jeebies, though. I just wanted to see what everyone else thought. |
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It should give you the heebie jeebies. |
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Seconding what John G. states with respect to incorporating redundancy, but I would still offer to get the PAS from Metolius. Peter's post has some good points of view: |
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Although the belay loop is full-strength, it is designed for use with biners. If you look at the Petzl catalog, the safest thing is to tie in through both waist and legs and clip biners only through belay loop, as to avoid "tri-loading". Like tieing in, I girth-hitch waist and legs with my daisy and save my belay loop for biner use only. |
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Why would attaching anything to the belay loop give you the "heebie jeebies"? It is the strongest part of the harness and generally stronger than any carabiner and virtually indestructible(unlike a carabiner). And you don't use two belay carabiners which is one of the highest load points nor do you use two carabiners at the attachment point to the rope when leading- so why have redundancy with your anchor connection? Do you wear two harnesses, clip two bolts side by side, or build three-piece anchors for each protection point? Your body will break before a belay loop will. And why not use the rope and only the rope for attaching to the anchor? It's way stronger than a daisy and more dynamic...been climbing for 22 years full-time without a daisy and will continue to do so. |
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Well, because I've always used my daisy/leash for multipitch climbing and have been told to always go through my leg loop and harness tie in points. When you use the rope to tie in, you are through your leg loop and waist tie in right? Wouldn't you not feel comfortable just tying in off your belay loop? |
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I wouldn't feel comfortable with your setup in that I don't see it as being redundant when belaying a leader working a free multi-pitch route -- Unless what you are doing is recommended by your manufacturer(s); the belay loop can hold a lead fall and keep you tied to the anchor, I see 2 loads going to the belay loop. AND, your daisy is rated and being used in the end to end configuration properly. |
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Tieing off to a belay loop (or girth hitching your daisy there) adds an extra and unnecessary element into the chain of the system. The fewer elements in the chain, the fewer things can go wrong/break. Example: to extend a sling to be twice as long, you would girth hitch the two and eliminate that biner between them. |
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I totally agree with Eli, and would also like to point out that girth hitching your PAS/Daisy through your harness/leg loops is actually a bad idea as you are increasing the wear on the harness. If every time you weigh the PAS/Daisy you are constricting the girth through those 2 points over time you will see a considerable wear on your leg loops, AND the PAS/daisy. Also as these are generally left in place you will often not even notice the wear. The only reason we do not tie into the belay loop is because then our knot ends up dangling around our knees. |
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Kevin, I don't see the wear, but I've got a harness that allows for girthing as I have stated. I would rather replace the wear than risk redundancy on a free climb. As I weight my PAS frequently, a good point though to check/replace it for wear. |
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Yeah Mark, I use a double length runner that I tie off setting loops in and put through my harness just as I do when I tie in my rope. I also leave it there always unless I am aiding. |
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John J. Glime wrote:I really dig that new big wall safety harness by metolius (not that I use it, but the two sewn belay loops make me happy.)It's a big bastard for sure but super comfy, extra padding, extra loops, & I think it serves beer (or a fine scotch) while at the anchor at the end of the day. |
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Actually the belay loop is much stronger than either of the "bomber" attachment points you both are refering to. Redundancy is only as good as the climber. Accidentally only threading one of those two points seems much more likely for a beginning climber than knowing it is attached to the strongest point on your harness. |
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For what I use - Metolius Safe-Tech, the rating is pretty much the same all around. So I don't see a problem with the way I tie in my redundant. But this is specific to what I do & use. |
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Belay loops are rated at 15 kN. Each leg loop holds about half that. On the other hand, in many harnesses the belay loop connects the leg loop attachment to the waist belt. Hence, from a reliability standpoint, tying the rope to waist and leg loops directly is a little better. Since it is also more convenient, for me it's a no-brainer. I'll freely admit that it's a bit more error prone for inexperienced users. |
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Just to be clear about this post, we have two situations Aimee presented. |
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brenta wrote: but my impression is that of the many accidents during rappels, very few, if any, were caused by failure of the belay loop.I absolutely agree. It isn't a rational fear I have. I just know that on sketchy exposed rappels that I often find myself looking at that single belay loop and thinking unpleasant thoughts. Then I quickly put it out of my mind. I also agree that the two belay loops on the new metolius harness are not meant as a backup. I just meant that it makes me feel happy to see them. I can say that if I rapped with that harness I would clip my locker through both of them and feel better. (But yes, this is a silly fear I have and completely unfounded.) But I also am pretty darn sure that they are not there to attach each daisy to the harness! Someone email Metolius and find out. When I am at work on a wall, the extra belay loop provides a convenient extra clip in point for attaching my self to the anchor, belaying, etc. But I guess I could be wrong... After getting home from work I was curious to check this "wear" problem that Kevin mentions. I do not see wear, let alone "considerate wear." Then I compared the robustness of those two loops and the stitching to my belay loop. If my life depended on it and I had to choose one over the other, I would definitely choose the two loops. The belay loop adds an extra link in the chain anyway that can possibly fail. Anyway, none of this is scientific. I am only looking at it through my fears. |
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Mark Nelson wrote: Similar discussion was also offered in Peter's post. Since no-one has yet offered an instance of what actually has happened during a factor 2 or presented dataThe best study I've read so far is, unfortunately, in Italian. Here's a link to the 37-page PDF file, and here is a summary, with no pretence of doing justice to the actual text, which was prepared by a working group of the Central Committee on Gear and Technique of the Italian Alpine Club. First of all, the authors of this study have performed hundreds of tests, measuring forces as a function of time at various points of the belay chain, filmed the experiments and reviewed them in slow motion, and developed a simulation model that matched the experimental data reasonably well. The study considers dynamic belays, that is, when the rope slips through the brake (i.e., belay device) instead of being fixed at one end. One of the most interesting claims they make is that in the case of dynamic belay, the familiar notion of fall factor is not so relevant, because the potential energy lost by the falling climber is not mostly converted into elastic energy stored in the rope, but is primarily dissipated in the brake. Said otherwise, the force applied to the anchor depends in practice on the braking force. While, in first approximation, the actual height of the fall is irrelevant in static belays, the total energy to be dissipated is what really matters in dynamic belays. That is, the height of the fall is the crucial parameter. The study goes on to analyze different brakes and belay setups. Even if you cannot read Italian, you can scroll down to Page 11 and see the graphs that show force on the top anchor, on the belay anchor, and on the braking hand, as well as rope slippage as functions of time. The experiments reveal that there isn't an awful lot of reduction in the strain applied to the anchors when the brake is moved from the belay anchor to the belayer harness. Along the same lines, the height to which the belayer is lifted (when belaying from the harness) is shown to have little impact on the maximum strain applied to the anchors. Justifications for these claims are not to be found in this very succinct summary, but the full study does a much better job. |
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Thanks Brent! Should be good to review when I get some time. |
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Russ Walling wrote: Where did you get this number? Sources please.Black Diamond (see page 4) and Petzl websites give the same number. The following is just speculation on my part: It may be that this is what the CE norms for PPEs prescribe. In any case, it should be adequate, given the forces involved in catching a fall. |
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Russ: mine is Metolius Safe Tech - rated 3600lbs front points and haul loop each rated similar, they consider this their full rating (16kN). I guess each manf. would have their own in-house method to meet or exceed certification. |