how much sand?

[jmck66]

how much sand /stone/ cement will i need for 1 sqaure metre of concrete 100 mm deep

[gazzawazza]

32kg of cement, 63kg of sharp sand, 117kg of gravel and 30 litres of water, according to the website below. The measurements you gave work out at 1/10th of a cubic metre, so put "0.1" in the calculator on the site.

http://www.pavingexpert.com/mortars.htm#mixos

[gasman]

6 Bags of gravel, 3 bags of sand & 1 &1/2 bags of cement.

[kwicky]

In the practical world you would order from your DIY store bags of ballast instead of stones and sand separately so the mixture is correct and then do a 5:1 mix with the cement.