The slab is a lowered portion of a larger building I am building a
music studio with a floated floor in. I meant the discrepancies are
higher and lower than the figure of 200mmm below the finished floor
level of the rest of the building. I think I am going to have it
screeded now. I wondered about the BS standards as when I complained to
the architect she said she thought it would be within the tolerances of
British standards. I asked for this to be 200mm below FFL and they knew
my tolerances were tight. I'm interested as to whether I can get them
to pay for the screed as it is now at my expense.


Phil L wrote:
Matt wrote:
On Fri, 15 Dec 2006 19:05:50 GMT, "Phil L"
wrote:

oktopusinc wrote:
I am doing a job in a building that has just been built. The
concrete floor has been poured 10mm low in places and 21mm high in
others - does anyone know the tolerances in British standards for
poured concrete. I may make a clai if they are over the limits.

Who laid the floor? - whoever it was, get them back and tell them to
get it fixed...there are no such thing as tolerances in pouring
concrete, the idea is to stop when it's full to the desired level,
although if this 30mm deviance is over a large area, IE, the floor
area of a house, then this is generally accepted.

Only if you have the house built by a bunch of incompetent monkeys

No, it's accepted everywhere, get a long straight length of timber and a
spirit level and you'll soon find discrepancies in your own (and everyone
elses) house

BTW, 10mm and 21mm lower and higher than what exactly?

The datum.

Is that above or below the DPC?