Can Steel concrete casing form part of floor slab?

27 Sep 2019
Reaction score
United Kingdom
More for my understanding and planning right now, but my wraparound extention is set to have a box frame steel beam running below the floor (where the wall will come down), right down the middle of the room which will be encased in 100mm concrete. My question is, can the top of that encasement form part of the 100mm floor slab (if poured at the same time)?
If it can, I'm going to be unable to put the DPM under the steel trench/slab before the pour, so can some sand binding be added above the slab, with DPM on top instead of the usual below?
There will be a further 100m PIR and 50mm screed/UFH added on top.
Any alternative suggestions most welcome.
Many thanks! :)
Sponsored Links
Possibly. Whoever came up with that design should also detail it if that's that you want.

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Sponsored Links