How to evaluate a tree cavity?

 Hi all,

Is there a formal way to determine how bad a tree cavity is?

I have a gorgeous tree on my backyard, probably a hundred year old.  I
needed to do some pruning, so I invited a few different people for an
estimate.  It turned out the tree has a cavity at the base of the
trunk.  One person strongly suggests to remove the tree, since it may
be dangerous -- the tree is huge.  The others say it's not too bad.
The tree looks perfectly healthy othewise.

All of them do their evaluation by just looking at the tree.  What I
am wonderig -- is there any formal test that can determine how bad the
problem is?

Thanks in advance,

Arkadiy

 On 11/26/2010 8:51 AM, Arkadiy wrote:

There are tree cutters and there are arborists.  I'd trust the latter's
advice.

For me, what would the tree damage if it were to fall?  I don't like big
trees that threaten my house if they were to fall and have removed
otherwise healthy trees because of this.

 
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to prevent biological, adhere to the shell or can help breathing.




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cheryblk