Rate My Hinge.

[born2trot]

Have to be careful cutting at that height also its the trees ' hotspot' ie its highest stress point .

[finchyo]

Have to be careful cutting at that height also its the trees ' hotspot' ie its highest stress point .

 

yeah very true, forgot about that.

[Tom Hall]

please explain how is that part of the tree under any greater stress than lower down or further up i don't understand? and i didn't recut my hinge i recut my sink so it went in the right direction lol

[born2trot]

please explain how is that part of the tree under any greater stress than lower down or further up i don't understand? and i didn't recut my hinge i recut my sink so it went in the right direction lol

 

Dont know the maths involved but generally between 1-2 metres above the ground is the greatest bending moment / tension of a tree and is the most likely to split out therefor . (does look as if you have had two stabs at the hinge as mentioned , not a criticism at all just an observation )

[Reddog]

please explain how is that part of the tree under any greater stress than lower down or further up i don't understand?

 

Dont know the maths involved but generally between 1-2 metres above the ground is the greatest bending moment / tension of a tree and is the most likely to split out therefor .

 

Think lever and fulcrum, it is were the crown weight places the most force/stress on the stem/trunk.

[Tom Hall]

thanks guys, i get what you mean now, so is that dangerous to fell from that height, i have been ask to fell down to that height a couple of times before (this time was choice due to rotten base) should i therefore climb and dismantle to that height as opposed to just straight felling?

 

i know you weren't criticising and all comments, advice, help, and abuse is more than welcome as long as it helps me do the job better

[Reddog]

should i therefore climb and dismantle to that height as opposed to just straight felling?

 

Tom, Please take this all as learning advise and not preaching.

 

If the tree is sound I would say you are better off to climb and take the top weight out first if leaving a stump higher than your chest.

When dealing with rot then you need to understand the risks and decide what coarse of action is the safest. Which could be to walk away until equipment can be brought in to make the dismantling safer.

 

As a note your shoulder joints are weakest when your arms are above your head. Very easy to wrench one and tear muscles. Learned this from others in both Felling and White water kayaking.

[Tom Hall]

reddog,

 

i take it all as advice. thank you for your information very helpful, and i understand what you are saying about the shoulder height thing, thank you

[skyhuck]

Think lever and fulcrum, it is were the crown weight places the most force/stress on the stem/trunk.

 

Sorry but that makes no sense, the longer a lever the more force it has, so the more tree above the cut the greater the "force/stress".

 

The advantage to cutting lower is that there is no chance of the timber splitting below the cut, as is possible with a higher cut.

[born2trot]

It must be a combination of both bending moment and weak point of the object (tree in this instance) . If you pick up a stick and bend it , it wont break at the greatest leverage point ie your hand , but somewhere along its length .