Recent content by Blazeyboy

Cheers for that. Although I spent about 25yrs on site it was all on civils & r.c. frame flats/offices etc so house construction is a bit of blank spot!

Thanks 'Stuart45' don't think water table is a problem as in the existing floors the oversite is way below ground level and they are as dry as a bone. I am veering towards the 'Technical solution' given in Diagram 5 of the B Regs Doc 'C'. Any idea on depth of hardcore as this is not given.

Thanks 'Woody' but can you clarify as B Regs Doc 'C' Tech solution 4.14.a.ii (50mm concrete or inert material etc) says "To prevent water collecting on the ground covering, the top should be entirely above the highest level of the adjoining ground" i.e. in my case above the concrete path running...

Good point. Probably going to be a lot of hand dig as Rear extension with only a wheelbarrow wide path access! but as retired now I don't have anything better to do!!!!

Assume the depth should be same as the extension foundations (as required by BCO) would 300mm width suffice?

The short span is 2.9m so to span without sleeper wall will require 145mm joist. To maintain the minimum 150mm ventilation space below the joists and (as per regs) keep the oversite above the external ground level will mean that the external ground (paving) will be 175mm below dpc which gives a...

Building Regs Approved Document 'C' Technical solution 4.14 (a.i) Diagram 5 shows a sleeper wall built off of 100mm concrete on compacted hardcore (no foundations) but doesn't indicate if this is acceptable for method (a.ii) (min 50mm concrete on 1200g dpm on sand blinding)

I am proposing to build a small (4mx3m) single story extension to my 1960's bungalow. Access will be through an existing external window converted to a door opening. I obviously need to continue the existing FFL through to the extension and as such it would make things easier to use a suspended...