Jon Connell wrote:
On Wednesday, 21 August 2013 19:30:36 UTC+1, harry wrote:
A lot depends on access.

1-2 metres down the side of the house :-(


Barrowing huge volumes of MOT down there isn't much fun, I've done 40 tonne
and I can tell you, that was a bad day. ;-)

I would consider decking.

Ah, but that would not be wife approved.

I'd stick with the B&B, you've still got to get them round there, but
they're not that heavy really and there'd be less chance of the retaining
walls bellying out with the weight of 60t of hardcore.

I'd build centre walls for added strength if it were mine - you can use
shorter beams and there's less stress on the outer walls.

Don't forget, pre-stressed beams usually have a camber and you'll have to
factor this into your final levels WRT drainage etc