how deep can i go with a type 1 aggregate subase

[billzgolf]

thanks for the input guys,i've opted for the 600mm width on the footing to
give me a 150mm overhang each side and accomodate the double skin walls and cavity which make the other 300mm(2 x 100mm wide blocks and 100mm cavity)will go up to 5" on the slab as it will be used for car parking.

[GraemeCook]

Hi Billzgolf

If you were in Australia I would advise you to talk to your local Council's building section.

Each council has different rules and what is legal in one shire/county/municipality (we cannot even agree on a name) may be illegal in another, and the next council may not even have considered that issue. Some councils even have different rules for different parts of their jurisdiction based on topography, population density, soil type, land slip propensity, etc.

If you evade Council approval processes then you may invite prosecution and/or invalidate insurance.

Besides engineering, aesthetic and cost considerations, you also need to consider the regulatory aspect.

Cheers

Graeme

[billzgolf]

cant do the footings and floor in a single pour as i need
to get a couple of course of block down to get up to floor level due to the
slope on the ground.