Paving slabs might rock, no? I reckon an unbroken concrete base (shuttering, cement mixer etc) would be a lot better.
How thick? 100mm enough? The back of the garden is mostly in shade at ground level, so the soil is normally quite damp and soft.
MM
You'll likely need planning permission for an impervious surface
What's the size and (full) weight of the tank?
/What's the size and (full) weight of the tank? /Q
Less psi than a person
Jim K
There is already one there for the old oil tank. It just needs extending about 30cm at front and on side to site the new tank at legal distance from combustible material.
MM
Oh, that's good to hear. Thanks. Any particular ones, or just bog-standard Yorkshire-type slabs from Jewsons or similar?
Okeydoke.
MM
It'll be a 1000 litre bunded tank. According to the specs of various types, the weight will probably be around 130kg for the empty tank, plus what 1000 litres weigh, which according to my pocket calculator is around 820kg, making 950kg in total, max.
MM
OK, so think in terms of what sort of surface you'd be happy to stand a car on. Pressed granite slabs laid on sand over hardcore should be ok. Lay them level to make sure that all the tank's contact points are in the same plane so as not to cause any twisting.
/OK, so think in terms of what sort of surface you'd be happy to stand a car on. Pressed granite slabs laid on sand over hardcore should be ok. /Q
?pressed granite??
A car has 4 contact points 1 on each tyre, a plastic oil tank will have many more than this or actually 1 large one (it's Base) like mine....
the Base is supposed to be impermeable so that leaks don't hideaway unseen.
I think the op needs the regs here not some armchair expert....
Jim K
Sounds good. Thanks!
MM
Something like this:
Maybe granite isn't quite the right description - but certainly pressed, and I always thought that the concrete contained granite chips (BICBW).
I would ask the tank manufacturer for advice. A car wont mind if the surface is not flat, or sinks a bit. The tank may crack.
I think some tanks I have seen are on lintels, usually sitting on two piers.
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