I'm on fairly high ground. If we ever get flooded Brisbane will
have been long gone, but my back yard did have a few low, soft
area's that didn't drain well. I bought in 2 truck loads of crusher dust
(Very fine gravel) and raised the whole area 400mm.
The slab is poured over this and down the sides, the slab looks
like its 500mm thick but its bulked up with cheaper gravel
below not expensive concrete. Worth a thought depending on
your situation. Water ran through my yard like a river in the recent
storm but not a drop in the shed.
Think about access.
I can get a car down the side of my house but its not a massive driveway.
Wasnt going to get a full size concrete truck around there so
ended up booking a pump truck.
The crusher dust too had to be tipped in the street and taken around
in a bobcat. Sounds a drama but you only do it once, you just
need to cost it in.
I originaly applied to put in a soak away drain,
council knocked this back and said it has to be plumbed into
the main storm water, after my water tanks.
I haven't yet, but will do, or it will come up as
not being certified when I try and sell later.
BEFORE:
CLEARED:
Raised Crusher Dust Pad:
Concrete Slab:
I used TITAN Sheds. Very happy with them,
no drama's, very helpful, easy to deal with,
but its worth remembering with the bigger know names you see that
even with the same company, the rep/salesman will vary from area to area,
most companys who do a "package" dont use their own guys and any earthworks,
the pouring of the slab/concreters, the the team who put it up may all be
subcontractors who change from area to area, job to job.
A recommended "company" may not be 100% the same as your mate who recommended them got.