Precast Suspended Floor

BarneyMc

I've just got my foundations poured and the dead build will begin next week. It looks like I'll have to change plans and go with a precast suspended (ground) floor as opposed to a poured floor.

Anyway, I've just got one question and that's where does the precast floor sit? In this diagram it seems to float! I would have thought it would sit under the inner leaf wall and end just as it hits the cavity?

By the way I'm not looking for any technical advice here and will be discussing with my architect. I just want to learn the basics before I do this. Thanks :cool:

PaulieBoy

BarneyMc wrote: »

I've just got my foundations poured and the dead build will begin next week. It looks like I'll have to change plans and go with a precast suspended (ground) floor as opposed to a poured floor.

Anyway, I've just got one question and that's where does the precast floor sit? In this diagram it seems to float! I would have thought it would sit under the inner leaf wall and end just as it hits the cavity?

By the way I'm not looking for any technical advice here and will be discussing with my architect. I just want to learn the basics before I do this. Thanks :cool:

It would be bearing on the wall at each end.

topcatcbr

BarneyMc wrote: »

I've just got my foundations poured and the dead build will begin next week. It looks like I'll have to change plans and go with a precast suspended (ground) floor as opposed to a poured floor.

Anyway, I've just got one question and that's where does the precast floor sit? In this diagram it seems to float! I would have thought it would sit under the inner leaf wall and end just as it hits the cavity?

By the way I'm not looking for any technical advice here and will be discussing with my architect. I just want to learn the basics before I do this. Thanks :cool:

The section your looking at cuts across the width of each plank. The other ends are normally supported on the peremiter walls. This should be looked at by an engineer ideally however the suppliers normally have engineers who will advise on best detail for your situation.

BarneyMc

Thanks, so the inner leaf would 'normally' sit on top of the hollowcore floor?

topcatcbr

BarneyMc wrote: »

Thanks, so the inner leaf would 'normally' sit on top of the hollowcore floor?

I would not say normally. If I was planning for a suspended ground floor I think I'd thicken the found and rising wall so the inner leaf could sit beside the floor but I have seen it done as you suggest but I'm not an engineer and cannot advise what's best in your situation.

Placing the inner leaf on the floor can cause structural problems and not ideal. However it can be designed to be suitable. There are too many variables.

BarneyMc

Makes sense now, thanks guys!