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Author Topic: shake or stress?  (Read 841 times)

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Offline alanh

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shake or stress?
« on: November 04, 2017, 10:40:56 am »
I got this pine this week, the top of the tree had blown off in last weeks storm, these were still standing. I`m not sure if the cracking is from shake, stress, or both, still looks like a lot of salvageable lumber to me...

  

 

Online thecfarm

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Re: shake or stress?
« Reply #1 on: November 04, 2017, 11:49:26 am »
Not home so can't look up the latin name,but white pine?
If so I kinda doubt shake. I have sold logs and cut probably the same amount for firewood,never seen shake in a white pine like that.
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Offline Chuck White

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Re: shake or stress?
« Reply #2 on: November 04, 2017, 12:18:40 pm »
The tree may have split when it was felled!
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Offline alanh

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Re: shake or stress?
« Reply #3 on: November 04, 2017, 12:23:02 pm »
It is white pine, I wasn`t sure if shake affected it, could be from the wind or dropping it..

Offline loganworks2

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Re: shake or stress?
« Reply #4 on: November 04, 2017, 02:16:11 pm »
From the first picture it looks like it must have been a standing dead tree. If it was it was most likely damage from felling the tree.

Offline Ianab

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Re: shake or stress?
« Reply #5 on: November 04, 2017, 04:00:03 pm »
I think it's mostly a stress crack from the tree falling. Wood in a dead tree is more brittle and more likely to crack when it hits the ground.

But you can also see how the crack has followed a semi-circle section of growth rings, and those rings have a different colour. That's more indicative of "shake". Maybe "something" happened early in the trees history. Fire / lightning strike etc. Didn't kill the tree, but weakened that growth ring. The tree recovered and kept growing normally, but left that weak ring.

That's my theory anyway.  :D

And yes if you can saw around the crack, the rest of the wood should be OK.
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Offline Darrel

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Re: shake or stress?
« Reply #6 on: November 04, 2017, 05:06:50 pm »
I've seen Pondarosa and lodgepole pine do that but only when standing dead.
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Online Peter Drouin

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Re: shake or stress?
« Reply #7 on: November 05, 2017, 04:56:54 am »
I have seen shake in W Pine a time or two.
That's shake and when the tree was cut it landed on something to crack it , or someone pulling the tree out bent the thing too far around a bump tree.
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Online Peter Drouin

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Re: shake or stress?
« Reply #8 on: November 07, 2017, 06:33:28 pm »
Had one today.
 

 
2008 LT40 super,2008 edger, Cat telahandler, JD 5410 And can cut up to 45' long
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And a license NH soft wood grader.
Sawing since 1987