I am at the ground work stage of a new extension and have a few concerns about the shallow drainage runs I have to work with and the effect this will have on the concrete slab construction.
The floor will be 150mm hardcore, 150mm concrete, 85mm insulation and 65mm screed. How do I accommodate a drainage run under this floor? The existing drain we may connect to is only 300mm below finished floor level but the gradient will mean that this will be reduced. How do I get around this when it comes to constructing the slab?
Thanks for any suggestions.
Matt
The floor will be 150mm hardcore, 150mm concrete, 85mm insulation and 65mm screed. How do I accommodate a drainage run under this floor? The existing drain we may connect to is only 300mm below finished floor level but the gradient will mean that this will be reduced. How do I get around this when it comes to constructing the slab?
Thanks for any suggestions.
Matt