Shed Base Material Calculations

[Lildanuk]

Hi all,
I have been going round in circles when trying to calculate the materials needed to complete my shed bases. They both have around 3 to 4 inches of type 1 mot base. I am wanting to use: all in one ballast and cement at 4-1 ratio. Any help will be greatly appreciated.

Shed 1

2489mm x 1879mm x 76mm


Shed 2

2184mm x 1879mm x 76mm

Kind regards,

Dan

 

[tomfe]

Any reason to not just use slabs?

 

[Alastairreid]

http://source4me.co.uk/calculate_concrete_mix.php

 

[noseall]

1.5 tonnes of ballast and 15x 25kg bags of cement.