Minimum Falls in floors

[Cstiling]

Hi does anyone know the minimum fall per meter a screed must have to let water run away ? Have a garage floor to tile builder has 30mm fall in 6 meters I think double that would about right but not sure of the exact spec you need . Thanks in advance

 

[Ajax123]

Typically 1:80 So for 6meters (which is quite a big garage) a fall of 75mm would be appropriate. However bear in mind that the concret should typically be a minimum of 100mm and at the entrance to the garage the recomendation is to thicken he concret to 300mm although I know of few people who do that bit.

 

[Cstiling]

Typically 1:80 So for 6meters (which is quite a big garage) a fall of 75mm would be appropriate. However bear in mind that the concret should typically be a minimum of 100mm and at the entrance to the garage the recomendation is to thicken he concret to 300mm although I know of few people who do that bit.

Thanks Ajax , yeh it's a big garage alright ( 100m) more of a bike showroom it's just the last 6 meters that are ment to fall ,where he's going to wash the bikes , cheers for the info have to check with the builder wether he can take it down and still have the 100mm depth