Port a wrap placement

[dendrovaldis]

Hello.

I am doing work in cemetery. Lots of cracked, hollow maples, rotting trunk basis. My coworker (certified climbing arborist) is putting port a wrap on neighbouring trees. We had a discussion, and he is arguing that it doesnt make any difference and its more easier for him.

So i am looking for some advices and arguments or facts, whats the difference and how it affects safety of work.

 

Thank you.

[stihlmadasever]

So many variables here,really depends pulley placement.

[Marc]

It could be safer to place a porta wrap on a neighbouring tree due to increasing the rope angle, although it's usually just easier to put it on the bottom of the tree your working on.

 

Also what is a certified arborist? ISA? Never met a certified arborist just those with plenty of experience.

[felixthelogchopper]

It could be safer to place a porta wrap on a neighbouring tree due to increasing the rope angle, although it's usually just easier to put it on the bottom of the tree your working on.

 

Also what is a certified arborist? ISA? Never met a certified arborist just those with plenty of experience.

 

I've met a few who were certifiable.

[dendrovaldis]

With certificated i was thinking guy who has taken courses, passed exam and recieved diploma.

[Daythe trees]

Can sometimes be easier to have the bollard or capstan on a neighbouring tree if everything is being lowered of a central top anchor. Means the stuff coming down isn't on top of the tail of the lowering rope. Especially if only two of you so no extra set of hands to direct the lump as it gets near the ground. Does that make sense?

[Joe Newton]

The further away the anchoring tree is to the rigging tree can increase the force applied to the rigging point. Something to be aware of.

[Ian C]

It could be safer to place a porta wrap on a neighbouring tree due to increasing the rope angle, although it's usually just easier to put it on the bottom of the tree your working on.

 

Also what is a certified arborist? ISA? Never met a certified arborist just those with plenty of experience.

Certified arborist is ISA qualification and anchors of adjacent trees/objects makes sense in some situations.

 

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[Marc]

The further away the anchoring tree is to the rigging tree can increase the force applied to the rigging point. Something to be aware of.

 

I always considered it as reducing, when the ground anchor/bollard is directly below the pulley and braked it will mean there is x2 the load at the pulley, move the ground anchor/bollard away increasing the angle and it will reduce, until it is greater than 90degrees then it can begin to ramp up and quite significantly.

 

There are just so many variables to every situation, I tend to prefer using another anchor tree where possible when using a GRCS with the need to haul or lift with the harken winch.

[Marc]

With certificated i was thinking guy who has taken courses, passed exam and recieved diploma.

 

Courses, diplomas and good old CPD are valuable although I feel strongly nothing can make up for time spent actually doing the job in a wide range or real world scenarios.