RO&AD say, "...
wood can now offer a very
real alternative to other materials, such as steel... It is the first time that fast-growing, sustainably
farmed wood can be used in such demanding applications.", and
as you can see (left) the demands on this bridge in winter are
You can read more about
acetylation and take a
look at the
CO2 calculator for the product.
There are other, perhaps
more natural, ways to improve the rot resistance of wood. A
charred timber will last much better in damp conditions. So much
so it has been used by
Tony Wrench in his many roundhouses
some very damp places like Wales.