On 19 Apr, 09:31, Lobster wrote:
Bruce wrote:
sm_jamieson wrote:

On 18 Apr, 20:34, Bruce wrote:
sm_jamieson wrote:

I have used a mini-accesschamber300mm diameter (floplast from
screwfix). Max height 600mm (in line with building regs). All exposed
at present / no infill. The drain was a little deeper than I thought
and and height from invert to ground level is around 700mm. Max height
with risers = 600mm, but I am going to use an inset lid over the whole
thing anyway, to contain the patio paviours, i.e. there will be the
plastic lid and another cover over.
How likely is it that theBCOwill fuss about the depth from ground
being a little over 600mm ?
Why not ask them?
For some reason I never consider just phoning them outside of the
inspections. But its still good to get some idea first so you can
choose your approach !

I think most of them prefer to be asked, rather than find a problem at
an inspection.

I certainly agree with that; however it runs the risk of not getting the
answer you want! Eg, if the OP asks the question directly, he might be
told no, 700mm is too much, whereupon he has no option but to do the
needful; on the other hand if he doesn't ask, theBCOmight not notice
or care about the extra height and he could get away with it.

(I haven't a clue how significant the actual issue is, BTW)

David

Well, the original BCO did not reply (still working there ?) so I sent
it to the general building control email address, and some numpty
there said "it appears you have used an unsuitable chamber" etc, so I
will have to change it. I thought about lowering the ground level by
100mm, and it will be lowered slightly anyway in fact, but it would
look like and would in fact be, an attempt to beat the system. Which
you cannot ! Another 100 quid then !
Simon.