How to work out how much hardcore for patio slabs.

[rogerde]

Hi all,
New to forum.
Can anyone tell me or advise me on how to work out how much hardcore base i need for a patio i'm about to do.
The patio is going to be 53 sq metres. In an L shape.
Whilst doing a search on Google, I think 50mm deep of hardcore would be ok?. Yes or no.
But i can't find anywhere to work out how much hardcore for the base i need.

Any advice or answers will be much appreciated.

Thanks.

rogerde

 

[r896neo]

At least 75mm preferably 100mm depth.

Check this out for quantities http://www.pavingexpert.com/calcall.htm#focus10

 

[rogerde]

r896neo.
Thanks for reply. Great help on the site you gave.
Needed more than I thought. Bit more overtime at work to do.

Thanks again vey helpfull.

Rogerde