wish i had done mine a bit bigger,
mine is only 5.5m by 10 m
should have gone for 7m by 12m
with two cars side by side its a bit tight, and the lengh will fit two car end to end, but again there aint much room for the spares and tools,
one day when i can be assed i may exstend, but then if do that it will have to go to 15m or so, not practical to make it wider now as it will be to much work,
lol at your footing depth, when i did mine it had to be 750mm min
just like the houses ect