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mjhayes
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Just a tad patronising there?...:thumbdown:

 

Not meant to be and I think Mark knows me by now, I do my very best not to offend these days , I do have a natural gift for it, I don't even know I am doing it most of the time and I also try not to drink and Arbtalk at the same time. I have also stopped using the smilies as that was offending some folk. Hope that helps.

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A long time ago (15yrs?) I recall being told the Arb Assoc advised along the lines " whatever the risk of heave, the risk of subsidence far outweighs it, to the extent it (heave) should be ignored" Does anyone else have the same rememory (borrowed from Winnie the Pooh) of this ?

 

Was never comfortable with this when dealing with a large tree very close to a structure that was taking loads of moisture from the soil.

 

Thankfully never involved with advice on tree surgery works!

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A long time ago (15yrs?) I recall being told the Arb Assoc advised along the lines " whatever the risk of heave, the risk of subsidence far outweighs it, to the extent it (heave) should be ignored" Does anyone else have the same rememory (borrowed from Winnie the Pooh) of this ?

 

Was never comfortable with this when dealing with a large tree very close to a structure that was taking loads of moisture from the soil.

 

Thankfully never involved with advice on tree surgery works!

 

I too remember that paper on winnie the pooh , the three little pigs also has some relevant s , had pile and beam been incorporated into the foundation design of that structure it is unlikely it would have blown down.

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Not meant to be and I think Mark knows me by now, I do my very best not to offend these days , I do have a natural gift for it, I don't even know I am doing it most of the time and I also try not to drink and Arbtalk at the same time. I have also stopped using the smilies as that was offending some folk. Hope that helps.

 

I was far too drunk to be offended mate!

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From my subsidence days a while back and from working quite closely with a few structural engineers, their common opinion was that heave is pretty rare. On a few occasions (out of 1000's we dealt with) we were asked to stop trying to get a tree removed as the risk of heave was too great after doing heave calculation (not sure how they did this!!)

 

The general rule of thumb is that a tree needs to significantly pre-date any structure for heave to be an issue - trouble is, if there is a risk of heave (for the soil to revert back to its original state) it's going to happen regardless, as one day any tree will eventually die!

 

I’m no expert but the best I can suggest is to get soil analysis carried out, heave calc done and run it all by the home owners insurance company as each insurance company seems to have different policys on the issue

 

HTH :001_smile:

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