concreting shed floor

[johnc]

Mate what is the shed sitting on now? Dirt?
My best advise is undo and remove the shed, set up and pour your slab with a minimum of 50mm overhang all around and reassemble the shed.

I hate to tell you this but you are going ass about face with you construction technique.

The shed has to sit on the slab.

EDIT tell us the name of the shed supply company and if they assembled it for you so we can all avoid them.

Bleedin'

It's not a big deal doing a slab after a shed is up, and you would never ever pull a shed down just so you could have the slab underneath it will be sitting on footings and is not worth the effort. Early on the bulk of sheds where probably done that way in some areas. The bull float is easy to use from an open garage front, and with a screed and a couple of cheese boards the slab is a bit of a doddle except in winter when drying becomes a pain. Depending on how good a finish you want I wouldn't sway a weekender from it other than to say it is a bit harder than it looks and worth employing a concretor to help on the day.

There is absolutely nothing wrong with the construction technique and after all this is an old shed getting a new floor so lets not get to excited about the whole job.

John

[chris718]

thanks for the comments... looks like most people seem to think I should hire a concreter to help, so I'll have to look into that. I have got most of the equipment I'd need (floats, laser levels etc), but I'm getting readymix concrete, so won't have time to work out how to do it on the day .

Are concreters likely to be happy if I lay all the reo etc, and they just do the levelling and finishing (I know some contractors either do the whole lot or nothing)

[Bleedin Thumb]

Fair enough JohnC and Barry I didn't realise the shed was on footings...hence my original question ; what is it sitting on now, dirt?

And Chris718 most concretors I've met grumble about having to do the steel so I don't think you will have a problem if you install it correctly.
Good luck.