"Sean" wrote in message
...
Does anyone know much about PTT ?

If you dig a hole, put in some hardcore/gravel and plonk in a PTT ... back
filling with more gravel and compacting ... how will it fair with the
elements?

Basically, is it really necessary to concrete the posts in as they will be
securely held in place by the (above ground structure).




Thanks to you for taking the time to answer.

In reply to a couple of points that were raised in the replies ....

-- Yes, I am from the UK.

-- The posts will be supporting a deck, that is not going to be attached to
the house. All in all, the deck will be around 400sq foot with all the usual
trimmings of rails, steps, seating, etc., so it will weigh quite a lot. I
will distribute the weight across a good number of posts, in fact probably
more than is necessary.

I have posted a couple of pictures on my site, which will be extended as the
project develops. http://garden.fullingdale.com

Sean