Tie-in fail

For you Dave these things may be easy to see.
A base tie certainly can not become a canopy tie 'at any point'. There is high chance for the line to be re-rigged from the climbers position 'at any point', a wonderful nature of stationary rope climbing, but suddenly the system becomes convoluted and I don't see how this could help.
Climbers could be trained to see vectors and set anchor legs accordingly, even post climb start. Canopy anchors are another interesting way, releasable trunk anchors, dual systems like dsrt, the list goes on and on and gets pretty complicated to implement into training. There is a way, with TRT, to achieve transparency for decision making, I mean that decisions are not wrapped into non-straight forward technique. Ddrt gives a straight forward and easy to understand palette of technique, though some would say far to limited, through working end retention. I bet you a shiny dollar that most would choose SRT work positioning over a combination of SRT access and Ddrt, SRT work positioning is so simple after all...but is it? I have a feeling that it has been mis-sold as a work positioning system when at its heart it is an access system. Stationary Rope Technique can grow up, I just wish that the club-drums would stop getting beat so much, give us all a chance to think about it some.
 
He had lanyarded in. Climbing on a base tie supported by parallel legs is the most likely way too achieve a doubling force. It also means he was within reach of his base leg so he could have pulled slack, tied an alpine butterfly and captured the two forming a loop that could be pulled up for a canopy anchor. He also had many options in the use of the tail end of his line.

The lack of understanding in the cause of accidents cannot be set on a system or tool but goes back to the individual. When the Blake's hitch first came out it was considered too dangerous by some big names because lots of guys were tying it wrong and getting hurt. Most of us eventually figured it out.

You say that Ddrt is inherently simpler. If so how do you explain the hundreds of climbers that have been killed or injured from tie in point failures while using it? Understanding cannot be be rushed! For some it is instant, for many it can take quite some time and for others it may never happen.

I really try to not come across as a drum beater even though it must sound like that sometimes. But
I am thrilled that the new SRT tools have been developed and are allowing me to continue climbing. I would not be if the only option was Ddrt.
 
Paul Hedderly said:
Waves have a tendency to reflect off static points (ie the anchor and the TIP. At certain points the freqeency, wavelength and line length may collude to align fresh shock waves with reflections... either in the load or anchor side, amplifying their strength and the momentary loads on the TIP and harness and anchor.
Click to expand...
Sympathetic vibrations...
 
Thanks for filling in the blanks guys :) I was trying to keep the jargon out... maybe I went too far.

Also that link was helpful Tuebor and DSMc's post there reminded me that I absent-mindedly called the "top point of the climbing system" a TIP repeatedly above - which for a base anchor is not correct. I think my brain put the acronym lower in meaning than tip as in, tip of a pencil, or tip of a tree.

I'll correct my previous post to refer to "TOS" (Top Of System) for want of a better name.
 
PSP primary suspension point is commonly used around here, I believe. There may be secondary SPs.



If you're on SRT,and can reach the down-strand on a basal-tie/ PSP system, you can always hitch onto the down strand. Suddenly, you only have you're own weight on the line (like if the poop is progressively hitting the ventilator, such as you see your PSP bending down/ rope sliding out away from the intended crotch. This could potentially happen hanging in free space, where there is not a possibility to reach the tree itself.
 
SoftBankHawks said:
...I bet you a shiny dollar that most would choose SRT work positioning over a combination of SRT access and Ddrt, SRT work positioning is so simple after all...but is it? I have a feeling that it has been mis-sold as a work positioning system when at its heart it is an access system. Stationary Rope Technique can grow up, I just wish that the club-drums would stop getting beat so much, give us all a chance to think about it some.
Click to expand...

I think the drums are beating not because anyone is trying to sell anything (SRT work-positioning) but because one after another DdRT work climbers find out for themselves how much their options increase as they gain experience on SRT work positioning systems.

Ironically SRT access is still the most dangerous part of arborist climbing, once the climber is in the crown and has positioned their rope (or ropes) where they want it the work-positioning safety potential is massive.
-AJ
 
Paul Hedderly said:
Did anyone check the broken branch for signs of the bugs?

Sent from my SM-N910F using Tapatalk
Click to expand...
No unfortunately I did not. I didn't bother climbing up to where it broke off either. I was up about 30', logs were around 16" in diameter, and was seeing exit holes everywhere. Didn't want to waste anymore time on the tree, so just came down.

"Kiss My Axe"
Associate degree in forestry from PSU Mont Alto
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Owner/operator of Climb High Tree Service established in 2002
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In general...any tree without a defect is more than strong enough to climb. How a tree deals with wounds and defects is the telling issue.

Dr. Shigo said that aspens are more closely related to a stalk of celery when it comes to isolating wounds than they are to trees. Almost zero capacity to compartmentalize decay. On the other hand, white and live oaks are probably the best of the trees here in North America.
 
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