DRT

The biggest reason i'd be for the name changes is that there seems to be a miss conception that Ddrt having two parts attached to the climber is some how inherently safer! What Kevin is stressing is that either SRT or Ddrt in both systems where still connected by a single rope! Both are SRT techniques. One is doubled or dynamic = dSRT when using devices such as the Rope Wrench or similar the rope is static or stationary= sSRT. This makes it perfectly clear that in either system your life is suspended on a single line.

What Kevin is now talking about is DRT. connected to two separate ropes. Dynamic or static, it doesn't matter. My understanding is the Scott Forrest used DRT to help win the Masters in Toronto this past year. Very cool.
 
I have definitely seen the confusion between Ddrt and DRT. It isn't uncommon for people to think they are one in the same. I personally like sSRT and dSRT. Not that i'm sold on DRT yet :)
 
A 100% DRT masters climb done in good time would be really cool to watch. You could tie in with a lanyard for super bonus points
 
As for large dynamic swings. I am sure I could do them with practice.

But from a Safety Bob perspective, why should anyone ever have to perform a large dynamic move at work.
 
Acronyms make communicating so much more streamlined, don't they? I propose working SWRPT off of a DWRT with APKLY for added efficiency........or just climb the tree. This wheel is being reinvented so much it's becoming a triangle.
 
No it's nothing is getting reinvented . Single has always meant one and Double has always meant two.

SRT does not exclude ddrt as a technique. It's very simple. Doubling happens all the time in other industries and disciplines. They just don't make it out likes its a big deal.
 
Been racking my brain on this and no real luck. Is there one thing anyone can name that should Never be attempted on a single static line but is okay to do on a single dynamic line?
 
I'm not qualified to comment on this thread, but that rarely stops me. By all means scroll on by...

The definitional thing - the number of ropes matters but also the T part of the acronym "technique". That's at least as critical. More so to me. The way a single rope is used when used DdRT is clearly a different thing.
I have no experience with DRT but it seems to me that it would be an advanced technique. It would be for me. I have enough on my plate keeping my rope plus one or two rigging ropes organized.
The DRT scenario is another 'tool' and tree climbers like to have as many as possible because trees are different and the kind of work we might have to do is different every time. No naysaying from me on it.
 
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Another area of confusion between static kind and dynamic lines. I was thinking of a 2:1 vs 1:1.

Example:
One thing that is okay to do DRT that is never acceptable practice is using a sharp tool that could possibly sever a single line.

I am trying to come up with differences between 2:1 SRT and 1:1 SRT and I can't think I anything that is ok to attempt in one but not in the other.
 
I'm not quite following. But do we need to decide what the terms static and dynamic are referring to. There is some confusion, or can be when distinguishing between 'static' as stretchiness or 'static' as stationary and between 'single' and... I'm getting confused. We want to nail these 's' words down.
The 'd' words too although they are less likely to be confused except in acronyms.
 
So the ITCC recently came up with proposed rule changes to accommodate 1:1 SRT. They came up with in 1:1, tools need to be approved for use without a backup. And 2:1 can use 11 mm and 1:1 can use 10 mm. I'm not sure why 2:1 tools don't need to be approved for SRT.

Some people have said that you should never descend on a hitch 1:1 SRT. I don't see a problem with attempting it. I have attempted it a lot and did not find it dangerous at all. It doesn't work but is it a "never attempt?"
 
There are three pieces of a complete rope system definition:
a) number of ropes ( and may we count a lanyard as one?)
b) quality of the rope (static or dynamic and is that distinction different for our industry since we don't use rock climbing ropes?)
c) configuration of the rope (doubled or otherwise)

Just thinking out loud to myself here, trying to keep the ideas organized.
 
Yeah why not? It's blocky and awkward but it's hardly dangerous. I guess you might get stranded. That's legitimate. But if you are near the tree or in spikes it's OK. I descended on just a hitch at The open ascent at Geezers. It works but it isn't pretty. Nothing about my climbing is though!
treebing said:
So the ITCC recently came up with proposed rule changes to accommodate 1:1 SRT. They came up with in 1:1, tools need to be approved for use without a backup. And 2:1 can use 11 mm and 1:1 can use 10 mm. I'm not sure why 2:1 tools don't need to be approved for SRT.

Some people have said that you should never descend on a hitch 1:1 SRT. I don't see a problem with attempting it. I have attempted it a lot and did not find it dangerous at all. It doesn't work but is it a "never attempt?"
Click to expand...
 
I think the problem in the renaming are the words "double" and "doubled". I'd leave all that as is: DRT or DdRT equals the same thing, a doubled single rope.

Moving right along... leave SRT as is.

For climbing on two ropes without technique specified simply call it:

TRT - two rope technique

If you love acronyms and want to be more specific you can refine further like so:

TDRT - two doubled rope technique
TSRT - two single rope technique

It's not perfect or totally consistent but it builds on accepted terms and keeps it simple.
-AJ
 
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