Suspended floor for extension

[Jake2021]

Hi guys,
Just seeking a little advice the best way to do this... I've just got a very small extension shell on the back of the kitchen (3m w x 2m d) I've currently got a concrete base down which was originally there with dpm on top one, it slopes ! One side is 150mm below dpc but the other end is only 100mm( slopes ) this means I've got around 100mm for king span but also means my joists are gonna have to be 100'll but one in will be resting on the dpm?

I really don't want to lay a screed because of the distance to barrow it, I was going originally going to lay 18I'm os b with a 5mm compound, I also don't want to dig the concrete up lol
Is there a,better way to do it?
thanks jake

 

[noseall]

Hi guys,
Just seeking a little advice the best way to do this... I've just got a very small extension shell on the back of the kitchen (3m w x 2m d) I've currently got a concrete base down which was originally there with dpm on top one, it slopes ! One side is 150mm below dpc but the other end is only 100mm( slopes ) this means I've got around 100mm for king span but also means my joists are gonna have to be 100'll but one in will be resting on the dpm?

I really don't want to lay a screed because of the distance to barrow it, I was going originally going to lay 18I'm os b with a 5mm compound, I also don't want to dig the concrete up lol
Is there a,better way to do it?
thanks jake

A 50mm discrepancy over such a short distance? I'd get my best barrow boots on and screed it.