I'm going to build a 10' x 8' shed and wondered how I work out how much aggregate, sand & cement I need for the job??

Is there an online tool??

Cheers in advance

http://www.cemex.co.uk/concretecalculator.aspx

https://www.diydata.com/general_building/concrete_calculators/concrete_calculator_2_m.php

[Edited on 18/11/17 by owelly]

Just recently laid a base for my new shed and would advise checking with your local ready mix companies for price especially if you intend laying it on a Saturday as my local companies all charge extra for weekend delivery.

4.6 metres x 2.1 metres x 100mm (ish)


Ballast & cement quote, £200 + £20 electric mixer hire.

Readymix, Saturday morning delivery, £180

No brainer.


Paul G



Garage extension