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By SaraB
From Denver, CO
Oct 8, 2007
The Newest cover of "top rope weekly"

Seems to me so long as you inspect your belay loop and keep track of your gear (of which your harness is a pretty important part) you should heed the advice of the "experts." That being said - if you find it hard to trust the loop meant for belaying, doesn't that, in some ways, mean you shouldn't trust any of your gear?

By Galibier_Numero_Un
From Erie, CO
Oct 8, 2007

I have the greatest respect for manufacturers like BD, Petzl, and Metolious. So what the heck am I doing commenting on this thread?

Whenever I've used a belay loop, I've always felt considerable risk of triaxialy loading biner. I never feel this way when I run my pear-shaped locker through the tie in points of my harness - whether it be that I show the small end or the wide end to the belay device.

When using the belay loop, I find it flopping around and I have no confidence how it's going to orient itself when it gets loaded. I'd love to see someone demonstrate smooth, dependable operation when running through a belay loop.

Additionally, I find that my belay devices (e.g. ATC XP, and Guide, Trango) tend to hang up unpredictably when I'm trying to feed rope to a leader. If your leader is making a desperate clip, I think smooth operation of your system is something to factor into your decision.

At the end of the day, the method you work most dependably with would seem to be the way to go.

BCA is another company I have great respect for, and in the world of avalanche beacons, they continue to explore the human factor in a rescue. Having realized that in this age of beacons with functionality that would make the owner of an I-phone blush, they have shifted their attention to the weakest link in the rescue operation - shoveling techniques.

My point here is that a holistic systems approach is in order, and not merely considerations whether the belay loop is the strongest point in your harness (it attaches to your tie in points, remember). A non-systems approach is irrelevant to my way of thinking.

The last thing I want to do is to convince someone to abandon a system that works for them. At the same time, I think we all need to reevaluate what we're doing from time to time.

If someone can demonstrate use of the belay loop while keeping the biner/belay device oriented consistently and predictably when loaded, and without hang-ups when feeding the rope to your leader, I'm all ears.

Now, for rapping, Will Gadd makes a powerful argument on the above reference BD page for using the belay loop (heat buildup, visibilty, etc.) and I'm all for it. Maybe I'll start calling it a rapell loop (grin).

Cheers,
Thom

By Daniel Crescenzo
From Wrongmont, CO
Oct 9, 2007
Crux?

I saw a sweet big wall harness (BD I think) that actually had 2 belay loops. I'm cool with the one I've got. Sure beats the diaper sling I used to rock when I was a kid.

By skiclimber
Oct 9, 2007
jibbing at chasm lake

Galibier_Numero_Un Wrote:

"Whenever I've used a belay loop, I've always felt considerable risk of triaxialy loading biner. I never feel this way when I run my pear-shaped locker through the tie in points of my harness - whether it be that I show the small end or the wide end to the belay device"

Hey Galibier, #1

You can not triaxialy load your belay caribiner in your belay loop by itself, it would be damn near impossible. Unless you have another anchor rope or piece of material in the caribiner and connected to something.

You can however cross load this carabiner on the gate or spine, but that is about it.

By Ken Cangi
From Boulder, CO
Oct 9, 2007
Hiking on Sanitas, Photo: Jeff Boxer

skiclimber wrote:
You can however cross load this carabiner on the gate or spine, but that is about it.


You make it sound as though cross-loading isn't as consequential.

By Mark Nelson
From Coniferous, CO
Oct 9, 2007
naughty bull

Crossloading & triaxial loading is important but it wouldn't be a concern if the belayer paid attention and properly kept the orientation of their equipment and used the equipment within the guidelines of the manufacturer.

By Richard Radcliffe
From Louisville, CO
Oct 9, 2007

Galibier_Numero_Un wrote:
If someone can demonstrate use of the belay loop while keeping the biner/belay device oriented consistently and predictably when loaded, and without hang-ups when feeding the rope to your leader, I'm all ears.

See Belay Master, earlier posts. If you haven't guessed, I'm a huge fan of that simple little device.

By Richard Radcliffe
From Louisville, CO
Oct 9, 2007

Other than the Skinner accident, has any one heard of any failures either through the recommended use of the belay loop or through clipping through the leg loops/swami belt?

By skiclimber
Oct 9, 2007
jibbing at chasm lake

Ken Cangi wrote

"You make it sound as though cross-loading isn't as consequential."

easy there big fella write back at ya, I know the seriousness of a cross loaded carabiner, I was trying to educate numero_1 as to the difference and defenitions of cross loading versus triaxialy loading.
no where do I down play the consequences of a cross loaded carabiner.

FYI: a cross loaded carabiner is reduced to approximately 1/3 of the breaking strength of a correctly oriented carabiner. This number varies by manufacturer but most carabiners are stamped with there rated strength on the spine in different configurations.

Redundancy is great, but if you need to back up your belay loop, then why don't you back up your rope, your harness, your atc, Where does it end?

By SAL
From broomdigiddy
Oct 9, 2007
great white throne as seen from moonlight buttress.

Just to chime in about the saftely of the belay loop and what happened to skinner. His belay loop was exposed to somewhat abnormal wear. ( depending on style ) He kept both of his daisys girthed to his belay loop enabling it from being able to spin and wear evenly.
With extensive wear in the same position it eventually gave way.
If you are a bit sketched about redundency then rig up an extra belay loop out of webbing for a back up.
skiclimber makes a somewhat valid point of if you cannot trust a belay loop which is made for belaying and rappelling and holding that weight then why should we trust a rope, gear ect.
Will we all be climbing with two 70 meter ropes used as half ropes in the near future for extreme saftey :)
Probably not. I think skinners death had a positive impact by reminding us that gear is not gonna last forever and to inspect it upon each use. Do that and replace it before its too late and you got plenty of climbs left.

By Kevin Stricker
From Evergreen, CO
Oct 9, 2007
Noah's first rope...kinda.

Mark Nelson wrote:
Crossloading & triaxial loading is important but it wouldn't be a concern if the belayer paid attention and properly kept the orientation of their equipment and used the equipment within the guidelines of the manufacturer.

Considering all harness manufacturers recomend using the belay loop I think we are all discussing a mute point are we not. Choose to belay or rappell from your harness and you are increasing your risk, not the other way around.

By SAL
From broomdigiddy
Oct 9, 2007
great white throne as seen from moonlight buttress.

I agree kevin.
It seems as if we are really searching for a loop hole to the belay loop :)
I think its bomber if you take care of your stuff. Check it frequently and tie a damn extra loop if your sketched.
I am pretty sure BD has that new big wall harness ( sick )
Double belay loops one for each daisy. Or in this threads topic.
Double your saftey.
I like saftey!!!!

By David Arthur Sampson
From Tempe, Az
Oct 9, 2007
Slap/Tickle

skiclimber wrote:
Redundancy is great, but if you need to back up your belay loop, then why don't you back up your rope, your harness, your atc, Where does it end?

Some of us started climbing (as briefly mentioned earlier) before belay loops were invented. Thus, it is not unusual that we have a healthy skepticism RE their usage. I, too, am not crazy about belay loops but I am learning to trust them. However, I have also backed up my belay loop.

I would have to disagree, however, with the notion that the belay loop correctly orientates a belay device. “Correctly orientates” is subjective, and depends on many factors. Perhaps, again, this is simply a question of becoming accustomed to the planner orientation of the rope with respect to the positioning of ones arms (and thus hands), but the slip axis of most belay devices has not changed over the years; the rope is feed through, and braked along an axis perpendicular to the axis of a carabineer used to affix the device to a harness. This includes, but is not limited to, early stitch plates and BD atc devices, etc (and including the "sheriff").

Thus, before belay loops were “installed” on harnesses (and the biner was feed through the waist and leg loops of the harness) the normal orientation of the rope (sharp end and brake end) was in a similar plane as the chest and body. One then locked off the brake end of the rope to ones side (perhaps locking off at the hip). With the invention of the belay loop this orientation has changed by 90 degrees. Thus, one now brakes to the front of the body (perpendicular to the chest plane). So, I find this braking position awkward and “un-natural”. It is thus not surprising that I (and others) have been uncomfortable with the adjustment.

By skiclimber
Oct 9, 2007
jibbing at chasm lake

Skinners belay loop failed and it is the only known case of this. It is a sad lesson to learn and Todd is greatly missed. I don't blame the harness manufacturer or the loop for the failure. From the information gathered it seems the harness was long overdue and it seems decisions were made that could have been prevented.

Sal brings up a great point as well, He kept both of his daisys girthed to his loop most of the time in the same spot. Cyclic loading in this configuration would most likely of contributed to the failure in addition to the weak and worn condition of the loop. Cyclic loading has a very slow sawing effect. This is especially evident in Top Rope anchors. Most people don't take in to account the effects of cyclic loading when in these scenarios, but we should all be aware of it, especially while top roping over edges. I am not sure, but the failed dyneema runner that was girthed in Shermans anchor might of been from cyclic loading.

I think Skinners accident is a separate issue than this threads debate, but I also think this thread exists because of Skinners accident.

By Tim Stich
From Colorado Springs, Colorado
Oct 9, 2007
Looking down from Notchtop

Ken Cangi wrote:
I got a good pump yesterday. Today I am headed to Neptune Mountaineering to spend some money.


Hells yeah!

Spending that birthday money on yourself 4Lyfe!!!!1111

By Ken Cangi
From Boulder, CO
Oct 9, 2007
Hiking on Sanitas, Photo: Jeff Boxer

skiclimber wrote:
Ken Cangi wrote "You make it sound as though cross-loading isn't as consequential." easy there big fella write back at ya, I know the seriousness of a cross loaded carabiner, I was trying to educate numero_1 as to the difference and defenitions of cross loading versus triaxialy loading. no where do I down play the consequences of a cross loaded carabiner. FYI: a cross loaded carabiner is reduced to approximately 1/3 of the breaking strength of a correctly oriented carabiner. This number varies by manufacturer but most carabiners are stamped with there rated strength on the spine in different configurations. Redundancy is great, but if you need to back up your belay loop, then why don't you back up your rope, your harness, your atc, Where does it end?


I guess it's your in-your-face approach, ski. You are laying it down like it's one way or the highway. I'm pretty comfortable with my climbing style, after almost thirty years of doing it at a high and intensive level, and I guess the AMGA, the Boulder Rock School, and my clients were okay with it, as well.

You jumped in here and told everyone how it is, and who is anyone to question the word of the manufacturers? I have news for you, ski. They fuck it up every once in awhile, and then we get notices for gear recalls. Like I said, even the gear manufacturers know that climbers should ultimately defer to their own judgment and experience when tying in.

Lets keep this discussion productive. If you have an opinion, state it without all the holier-than-thou attitude.

Peace

By Ken Cangi
From Boulder, CO
Oct 9, 2007
Hiking on Sanitas, Photo: Jeff Boxer

Torti wrote:
I was climbing up in boulder canyon this weekend and was just about to begin climbing when a guy next to my belayer mentioned this about belay loops: "you should be belaying from the loop, not clipped into the waist/leg loops. it can load the carabiner in three places and break them." (which seemed a bit extreme-->wouldn't you're body break/move first?) he was an outward bound instructor, so i figure he should know his shit. I'm not married to either idea, i just want to be safe. My rationale for clipping into both the leg and waist loops was redundancy, which does not exist when you just clip into the belay loop. what's the deal?


Since some of you seem to have moved away from the OP, so I've pasted it here.

Torti's question didn't regard the breaking strength of a belay loop. He said that his rationale for clipping in the tie-in points was for redundancy. He is smart to consider redundancy. There is a lot of talk about triaxial loading from the tie-in point setup. I disagree that it is a problem, as long as your locker doesn't get hung up, which is less likely than a biner flopping around on a belay loop and cross-loading. Hang out in any gym for a half hour, and you should see more than your fair share of cross-load-oriented lockers on gri gri's.

I leave a pearabiner through the tie-in points, and then I clip a locker and gri gri through both. I also know to pay attention to the orientation so that there is no cross or triaxial loading. The extra locker also comes in handy on belay ledges.

It's unreasonable to double up on every piece of gear, but doubling up there makes me feel better. And if belay loops are supposed to be so much safer than the tie-in points, then why doesn't everyone tie into them?

By Jay Knower
Administrator
Oct 9, 2007
Wild Thing, Independence Pass, CO.

I guess I am missing the point of this thread. Do we need redundancy in everything? Who said that redundancy is the end all, final word for climbing gear? I use the belay loop for belaying because that's what it was designed for. I'm ok with it.

It seems to me that the Skinner accident was more due to excessive wear than to an issue of redundancy. When your belay loop shows signs of wear, replace the harness because it has worn out.

In Europe, they see fit to lower off one anchor bolt from sport climbs. And they basically invented sport climbing over there. Now that I think about it, they allow you to do many things over there that liability precludes us from in the US. When did we as climbers become so over-cautious? I know many of you tradsters from yesteryear actually tied in with a few loops of webbing and a water knot. Did you worry about triaxial loading and cross loading of your steel biners?

By brenta
From Boulder, CO
Oct 9, 2007
Cima Margherita and Cima Tosa in the Dolomiti di Brenta.  October 1977.

A chain is as strong as its weakest link. In a factor-2 fall, ropes are not supposed to apply more than 12 kN to the climber's body. Therefore, having components in the belay chain that withstand much more than 12 kN is not very useful. That's why belay loops must hold (at least) 15 kN.

Harness manufacturers usually exceed the minimum 15 kN requirement by a significant amount. At that point, even though the belay loop is an extra link in the chain, and therefore makes it weaker, the probability that it will break is very small--as long as the loop is in good conditions.

The breaking strength is only one aspect of a harness component. Resistance to wear is another. Belay loops do not withstand friction with nylon as well as the tie-in points, which are designed specifically for that. Therefore one should not tie into the belay loop. It only serves to accelerate wear of the harness.

Furthermore, putting the belay loop to its intended use reduces clutter.

The cross-loading issue is not so easy to analyze. I don't have great faith in the biner's ability to re-orient itself, especially if to do so, the sleeve has to slide past a taut rope that presses against it.

Neither way of tying in is perfect; as it has been pointed out already, one should be vigilant. I like the DMM Belay Master. I may get one.

By Avery Nelson
From Boulder, CO
Oct 9, 2007
Avery, 300' up Japanese Coulior

So, up until a year or so ago, I didn't fancy or use the belay loop. I've been using it the past year, but *more frequently* seem to cross load my belay biner at any given moment, than I would have with clipping in directly to the swami and leg loops.

I'm always having to straighten it out. Has anyone else (besides Tim) noticed the same?

I'm tempted to go back to my old ways, and remove one additional link from the system, despite the fact I recognize the benefits of the belay loop.

By Joseph Stover
Oct 9, 2007

When I first learned to climb, I was taught to thread the locking biner through the harness tie in points directly. When I started climbing at the gym in Tucson, they prefered that I use the belay loop, so I have used it ever since.

If the difference between the belay loop and the direct harness tie in causes death, then there is something wrong in the protection system. If a biner breaks because it is triaxally loaded due to not using the belay loop, then that is a defective biner. Unless of coarse, it's a factor 2 fall on a static line!

I think the most important thing is to inspect your gear and use the method that you are the most comfortable with, as that will probably lessen your chances of making a mistake.

They key is attentive belaying! no matter what method you use, just pay attention to everything in the system at all times, there is no substitute to attentive belaying!

Maybe a rubber band or piece of string could be used to keep the thin end of the biner on the webbing loop if it is truly a problem for anyone. With one hand on the climbing rope and one on the brake end, then this is really not an issue as you can just hold the biner upright by pulling up on the climbing end.

Now my question is: Why is it okay to triaxially load a piece of webbing or rope, but not a metal biner? The biner technically has a higher strength rating, true? And how bad could the triaxial load actually be if your harness tie in points are close together and mostly overlapping?

By brenta
From Boulder, CO
Oct 10, 2007
Cima Margherita and Cima Tosa in the Dolomiti di Brenta.  October 1977.

Joseph Stover wrote:
Now my question is: Why is it okay to triaxially load a piece of webbing or rope, but not a metal biner? The biner technically has a higher strength rating, true? And how bad could the triaxial load actually be if your harness tie in points are close together and mostly overlapping?

A biner is about as strong as webbing in the main direction when closed (> 20 kN), but substantially weaker in the transverse direction (> 7 kN).
Seven kN isn't that great of a force if you think of it. If you hang from a taut rope with your weight on your feet and all of the sudden transfer your weight to the rope (say, your feet slip), the force on the rope peaks at twice your weight, that is, in the vicinity of 2 kN. This is for a factor-0 fall.

A piece of webbing is supple; hence, you cannot cross-load it the way you cross-load a biner.

Think of the American Death Triangle. If the angle is wide enough, it works as a force multiplier. It is difficult, though, to put a belay loop in such a configuration. As you point out, the tie-in points tend to come close together and the angle is not wide enough to be dangerous.

By Nate Oakes
Oct 10, 2007
~2000' above Boulder.

Joseph Stover wrote:
If a biner breaks because it is triaxally loaded due to not using the belay loop, then that is a defective biner.


As mentioned above, biners are designed to be much weaker when triaxially loaded than biaxially loaded. When they perform as such, that does not make them defective; quite the opposite. You are mistaken if you think you can load a biner triaxially with the same force as it is designed to withstand biaxially.

Joseph Stover wrote:
Now my question is: Why is it okay to triaxially load a piece of webbing or rope, but not a metal biner? The biner technically has a higher strength rating, true?


The short answer is because webbing is flexible and the biner is brittle. Webbing will reshape so that loads are distributed more evenly along the webbing's major axis (along the length of the webbing), whereas biners can not reshape in this manner. That leads to a higher percentage of the load being taken on the biner's minor axis (across the cross-section), which is weaker.

Joseph Stover wrote:
And how bad could the triaxial load actually be if your harness tie in points are close together and mostly overlapping?


Pretty bad. Picture an HMS-shaped biner, with your two tie-in points at the bend near the hinge. It's easily possible to have the tie-in points overlapping with a 60 degree angle between the two. This will load the biner triaxially and could break it.

Use the belay loop as specified by the manufacturer. Back it up with another loop of webbing if you're uncomfortable. Load a carabiner in the weak direction at your own risk.

By brenta
From Boulder, CO
Oct 10, 2007
Cima Margherita and Cima Tosa in the Dolomiti di Brenta.  October 1977.

A note on terminology. This is my understanding:

In solid mechanics, triaxial loading occurs when stresses are applied along all three coordinate axes.

A properly employed biner is not biaxially loaded, because the stress is only along one axis.

A case of triaxial loading would be something like this. A biner connects two slings attached to two anchors and forming a wide angle. A rope pulls the biner down in the direction perpendicular to the line connecting the anchors. The biner is over an edge. If you take the x axis to be along the biner's spine, the y axis to be along the biner's transversal direction, and the z axis to be orthogonal to the plane of the biner, you have stresses in all three directions.

By Richard Radcliffe
From Louisville, CO
Oct 10, 2007

Joseph Stover wrote:
Maybe a rubber band or piece of string could be used to keep the thin end of the biner on the webbing loop if it is truly a problem for anyone.

Sorry for being so obsessed: Belay Master

EDIT: I think the whole issue here is less one of safety, and more of comfort; i.e., how comfortable do you feel belaying/abseiling from the belay loop vs. the tie-in. And for all you wannabe hard-folks out there, comfort is not to be underestimated, whether it's psychological or physical. Manufacturer's recommend the belay loop, but there are no recorded cases of an accident occurring as a result of using the tie-in, at least to my knowledge, and obviously there are lots of people who use the tie-in. That's a LOT of hours of belaying with no accidents. I think the Belay Master used on the belay loop is more "comfortable" and safer than using a regular locker on either the tie-in or the belay loop because there's no chance for cross-loading and it's virtually impossible for it to become accidentally unlocked. It handles very nicely as well. BTW, no, I don't work for DMM...


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