determine lean

Victor Lindsay · 27th June 2009, 07:54 AM

How do you determine the lean. Is there a formula? Or do you just guess.

Help me out here TW.

Eric Frei · 27th June 2009, 08:40 AM

In what, angle degrees, feet

Victor Lindsay · 27th June 2009, 09:38 AM

Yes, feet. sounds like you have an answer ekka.

Eric Frei · 27th June 2009, 06:46 PM

Lean refers to the trunk, usually on straight single trunks because say a spreading tree like Jacaranda or Poinciana the trunk divides into many leaders/branches and it gets difficult to say what is on a lean.

But lets say you have 30' of trunk then the canopy goes all over the place and that 30' is not straight but on a lean then I talk about it as slight, moderate or severe.

So lean pertains to angle from upright in degrees. If dead straight up like a pole was 0 degrees and 90 degrees was laying on the ground then your brain will soon see a 5 degree lean vs 15 degree lean.

How to calculate the lean in degrees is done a few ways. You could measure it all out on the ground and do some trig ... or stand back a distance with something like a protractor and measure it.

Hmmm, in my new book it says:-

0-15 degrees is slight

15-30 degrees is moderate

30-45 degrees is severe

more than 45 degrees is critical

27th June 2009, 07:54 AM	#1
Victor Lindsay Mature tree Join Date: Aug 2007 Location: ? Posts: 441	determine lean How do you determine the lean. Is there a formula? Or do you just guess. Help me out here TW.

27th June 2009, 08:40 AM	#2
Eric Frei Admin - Owner Palm & Tree Services in Brisbane Join Date: Jan 2007 Location: Brisbane Posts: 12,990	Re: determine lean In what, angle degrees, feet __________________ Protect your rights to work - Join Australian Tree Association My businesses:- Qualified Brisbane Palm and Tree Lopping \| Stump Grinding Brisbane \| Brisbane - Gold Coast Consulting Arborist

27th June 2009, 09:38 AM	#3
Victor Lindsay Mature tree Join Date: Aug 2007 Location: ? Posts: 441	Re: determine lean Yes, feet. sounds like you have an answer ekka.

27th June 2009, 06:46 PM	#4
Eric Frei Admin - Owner Palm & Tree Services in Brisbane Join Date: Jan 2007 Location: Brisbane Posts: 12,990	Re: determine lean Lean refers to the trunk, usually on straight single trunks because say a spreading tree like Jacaranda or Poinciana the trunk divides into many leaders/branches and it gets difficult to say what is on a lean. But lets say you have 30' of trunk then the canopy goes all over the place and that 30' is not straight but on a lean then I talk about it as slight, moderate or severe. So lean pertains to angle from upright in degrees. If dead straight up like a pole was 0 degrees and 90 degrees was laying on the ground then your brain will soon see a 5 degree lean vs 15 degree lean. How to calculate the lean in degrees is done a few ways. You could measure it all out on the ground and do some trig ... or stand back a distance with something like a protractor and measure it. Hmmm, in my new book it says:- 0-15 degrees is slight 15-30 degrees is moderate 30-45 degrees is severe more than 45 degrees is critical __________________ Protect your rights to work - Join Australian Tree Association My businesses:- Qualified Brisbane Palm and Tree Lopping \| Stump Grinding Brisbane \| Brisbane - Gold Coast Consulting Arborist

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