12 times stem diameter research.

[arb culture]

I'm trying to remember the scientific research that backs up the 12 times stem diameter root protection area in BS5837:2005.

 

For some reason, I can't seem to find it.

 

Just wondered if anyone knew what science it was based on?

[SJB]

In BS 5837 it says its from research by Matheny and Clark from their book trees and development.

 

I would be interested to know the scientific basis too. i tried to contact one of the authors for my dissertation but got no response.

[common lime]

I was told at a workshop for the new BS 5837 (2005) that Metheney & Clark had made an improvement on Table 1 of the old BS 5837 (1991). That the 12x DBH was an educated estimate on where the majority of tree species roots should be located.

[Ben]

It's 12 x Diameter for single trees and 10 x Diameter for trees in groups.

[Bundle 2]

.......the 12x DBH was an educated estimate on where the majority of tree species roots should be located.

 

I think you will find that this the case. The modified "multi-stem" equation is no less scientific!

Changes have been introduced that permit an area to be skewed to reflect more accurately the distribution of a root plate when considering barriers such as walls , roads and so on.