Learning rigging

[Mark Bolam]

I used to do a bit of tree surgery.

[Mick Dempsey]

15 minutes ago, MattyF said:

I think of every 30 climbers who enter this industry maybe 2 will still be in it in 10 years time..would be hard to get the experienced climbers to teach the level 1’s anything as there is rarely the time on site. 

And what is in it for the expérienced guy?

 

[AHPP]

19 minutes ago, Mick Dempsey said:

And what is in it for the expérienced guy?

 

A competitor 50% of your age with 80% of your knowledge. 

Edited 2 hours ago by AHPP

[Mick Dempsey]

9 minutes ago, AHPP said:

A competitor 50% of your age with 80% of your knowledge. 

Who is a lot cheaper!

 

Being cynical of course, as I’m currently training a lad who is less than a third of my age.

I hope within a year or so it’ll be quicker for him to do the tricky stuff, he’s already doing well, but it is a gradual process, with mistakes along the way, not all his of course, but ultimately every thing is my responsability.

[kram]

On 03/10/2025 at 16:32, Joe Newton said:

You've stated that you have no comprehension of the strength of the ropes needed and the forces involved.

Not quite, I have been shown and supervised this level of rigging by several expereinced arbs. A leafy bendy top of 50kg rather than a solid log, swinging into tension rather than a straight drop negative, a max of 3kn is my estimate. Every peice in the system is rated over 20kn with some redundancy, I had no concern on the gear.

 

It is bigger stuff, that I would be unsure of and wont be attempting anything bigger without doing the course and gaining experience, with better gear. Hence the reason I posted this thread.

 

Theres been plenty of good information by the other posters in this thread, plenty for me to read through. Thanks.

[Joe Newton]

15 minutes ago, kram said:

Not quite, I have been shown and supervised this level of rigging by several expereinced arbs. A leafy bendy top of 50kg rather than a solid log, swinging into tension rather than a straight drop negative, a max of 3kn is my estimate. Every peice in the system is rated over 20kn with some redundancy, I had no concern on the gear.

 

.

To use your hypothetical:

 

If a textile item is rated with an MBS of 20kn (MBS being the minimum load an item may fail at from new, not taking into account wear, uv degredation, cycles to failure etc) then the WLL would be 2kn, using the common safety margin of 10:1. You would already be loading your equipment (forgetting for a minute that you're using dynamic climbing rope not designed for arb work) over its Working Load Limit. 

 

That's not taking into account fall factor or dynamic loading.

 

Take a few evenings to read up on what Rich and myself have suggested. There's plenty of stuff you might find interesting. 

[MattyF]

School trust fined after member of public hit by falling tree branch – HSE Media Centre

PRESS.HSE.GOV.UK

When your retarded enough to use an old climbing line or something not rated for the job… can’t believe he only got a suspended sentence considering the amount of time and money the rest of us have to spend on gear , training, insurance , loler and all the other endless crap to get on these sites… and he had f all !! 

[MattyF]

9 minutes ago, MattyF said:

School trust fined after member of public hit by falling tree branch – HSE Media Centre

PRESS.HSE.GOV.UK

When your retarded enough to use an old climbing line or something not rated for the job… can’t believe he only got a suspended sentence considering the amount of time and money the rest of us have to spend on gear , training, insurance , loler and all the other endless crap to get on these sites… and he had f all !! 

Yep looks like an old Yale climbing line

[Mick Dempsey]

Rope must have been partially cut beforehand, or more likely cut during the work.

 

No way that climbing line would snap lowering anything off that tree.

[MattyF]

Another reason to take double braid over 16 strand? Regardless I would not !