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08-10-2009, 00:19   #1
JG009
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how much is hardcore per tonne?

Per tonne...and how many do you need to cover 36m2 for paving. Its for a back garden so there wont be any cars on it. Im in dublin, roadstone, ballybane? Also how much sand will I need and how much is that per tonne. Building sand not actual paving sand.
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08-10-2009, 00:25   #2
starbelgrade
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It depends entirely what you are using for the sub-base. Gravel prices vary depending on what part of the country you are in - sometimes crushed bricks are a cheaper option (especially if there's a demoliton going on near you).

Also, you'll need to know the cubic square metres, as opposed to m.sq.
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08-10-2009, 00:35   #3
JG009
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I dont know the cubic measurements. The bottom layer is grass. He doesnt want to bother digging though, just straight on top of it as levels in not a problem and he is putting a line of sleepers across the garden, so the paving will be on a raised patch if you get me, with the hardcore and sand bringing it close to the level of the top of the sleeper.

I think the last time I did a garden it was about 200 for 10 tonnes? And I doubt he would be too fussy if its crushed brick or hardcore. Thanks.
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08-10-2009, 01:44   #4
starbelgrade
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If it's 36m2, all you need for the m3 is the depth of hardcore required to meet the level of the sleepers (minus the sand & slab thicknesses) & multiply it by that. I really don't know the prices in Dublin, though. I only mentioned the crushed brick because I got a shed load of it for a patio sub-base off a builder who was demolishing a house a few doors down - he was glad to get rid of it & I got it for free. Happy days!

Last edited by starbelgrade; 08-10-2009 at 01:48.
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08-10-2009, 19:49   #5
stephentbb2000
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Check this page out, it will calculate what you need.
http://www.sand.ie/pages/prod/s_hsand.php
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08-10-2009, 20:05   #6
JG009
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Thanks. That was spot on. Ballybane said 30 a tonne, roadstone wanted 50!
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25-08-2011, 20:47   #7
giggles555
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workshops foundations

hey folks

so im building a workshop soon and the plan is stud walls shiplapped.

the floor slab is 6000*4800 * 150 and on the edges to support the stud walls 300 deep concrete.

could someone tell me the depth and tonnage of hardcore i would need?
and also would 25N strenght do for the concrete slab?

thanks
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25-08-2011, 20:54   #8
bruschi
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Quote:
Originally Posted by giggles555 View Post
hey folks

so im building a workshop soon and the plan is stud walls shiplapped.

the floor slab is 6000*4800 * 150 and on the edges to support the stud walls 300 deep concrete.

could someone tell me the depth and tonnage of hardcore i would need?
and also would 25N strenght do for the concrete slab?

thanks
each situation is different, and would need engineers to look at it. but typically, 250mm of hardcore would be enough. that gives you 7.2m3 of hardcore, approx 16 tonne, which is about 1 load of stone.

again, engineer would probably need to recomend, but 25n should be fine.
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25-08-2011, 21:03   #9
giggles555
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ah thanks for that bruschi
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29-08-2011, 21:28   #10
1chippy
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For the sake of it id put in 30 n with 10mm chip and extra sand. you get a far better finish easier
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