On 23/06/2011 18:43, David in Normandy wrote:
Someone has asked me to help put in an upper floor in a farm
outbuilding. The room dimensions are 7 metres by 5 metres constructed
with a single thickness of breeze blocks. He is planning having 7 metre
long joists and fixing down traditional tongue and groove floorboards on
top.

Is this feasible? 7 metres sounds like a very long span unsupported,
assuming that you can even get 7 metre long joists? I would have thought
that at least one cross beam would be needed for such a span.

I'm happy to lay floorboards and do the associated DIY but I'm no
structural engineer!

Suggestions?


Table A of the Building Regs suggests a 9 x 3 will only span about 5.5m,
so probably no.


--
Dave - The Medway Handyman www.medwayhandyman.co.uk