# Patio project - how much hardcore will i need?

Posted 16th Aug 2010
Im building an 18 square meter patio and will be putting down about 2 inches of hardcore.

Is there an equation to work out how many KGs/Tonnes i will need?

Thanks

### Groups

2 1 tonne bags will do it, 1 bag will do approx 12 square metsrs at abot 1.3 inch thick, aim to pay about £30-£35 a bag..
Hope that helps..
Edited by: "ukmonkey" 16th Aug 2010
deleted32260
^^ I make that around a cubic metre and from what I know a cubic metre of hardcore is around 2 tonnes.
cheers guys...so which is it, 1 or 2 tonnes?
ide say 1 tonne plus a few disliked relies and you should be fine to cement over - lol
deleted32260
JayBird

cheers guys...so which is it, 1 or 2 tonnes?

You require about 0.9 cuic metres of hardcore, from what I know 1 cubic metre = 2 tonnes so I say you need 2 tonnes.
deleted39917
we just finished our patio was just over 20 sq meters and we used 2.5 tonnes cost about £40 from the pit.
How deep did you lay it?
deleted39917
JayBird

How deep did you lay it?

abt 2 inch deep i think. we went down 5 inch from the damp course then had type 1 compacted down then layer of cenet with 40mm thick slabs on it. took 2.5 tonnes of type 1 and abot just over 1 ton of sand.
Hardcore is around 1.9 - 2 tonnes per cubic metre.
2 inches is approx. 51mm.

18 x 0.051 = 0.92cu m.

So if you round up, you want to cover an area of 1 cubic metre, so you'll need 2 tonnes of hardcore.

Simples....
civms47

Hardcore is around 1.9 - 2 tonnes per cubic metre.2 inches is approx. … Hardcore is around 1.9 - 2 tonnes per cubic metre.2 inches is approx. 51mm.

Hmmmm... I think he might need to stretch it to 52mm !

What are the actual sizes Jaybird?
tryint to work out how many sq mts you would get out of a tonne of hardcore if its layed and packed at 6 inches thick.also how many sq mts youd get out of a tonne of granite sand layed at 4 inches thick.thanks
i need to lay some astroturf... need to put 2x2 battern down then type 1 with sand on top how much do i need ?? oO
ballsy

i need to lay some astroturf... need to put 2x2 battern down then type 1 … i need to lay some astroturf... need to put 2x2 battern down then type 1 with sand on top how much do i need ?? oO

WOuld help but its broken today!

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ballsy

i need to lay some astroturf... need to put 2x2 battern down then type 1 … i need to lay some astroturf... need to put 2x2 battern down then type 1 with sand on top how much do i need ?? oO