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Concrete bases


Lloyd90
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Underneath is like compounded earth, It used to be the drive way but is now covered in chippings. I was going to scrape away the chippings and dig down about 4" then, I dont want it sticking up in the air. Prob line the outskirts with Wood and then tip the cement in. Just wondering how much It would cost :good:

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100 mm. 4 ins thick on a level base of compacted subsoil. Assuming where its going is reasonably firm ground.

 

As its light weight. You could use 50 mm slabs on a hardcore base in which case you would need 13 slabs ( including Cutting

 

Including waste you would need .40m3 of Concrete or if you mix it yourself a 1 tonne dumpy bag of all in aggregate which will be about 45 sovs and three bags of cement which will be about 15 sovs at the builders merchants.

 

If not firm ground you will need 100mm of hardcore which would be another 0.4 m3 or 0.80 tonnes.

 

You will have some aggregate left over but this is the cheapest way to buy it.

 

Mix ratio of 1 part cement to 6 parts aggregate should be fine, dont make it too wet.

 

Hope this helps.

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Underneath is like compounded earth, It used to be the drive way but is now covered in chippings. I was going to scrape away the chippings and dig down about 4" then, I dont want it sticking up in the air. Prob line the outskirts with Wood and then tip the cement in. Just wondering how much It would cost :good:

 

 

you're better having it slightly above ground level so it doesn't get covered in water, couple of inches should be fine. As said find a mixer to borrow one dumpy and a few bags of cement and job done.

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100 mm. 4 ins thick on a level base of compacted subsoil. Assuming where its going is reasonably firm ground.

 

As its light weight. You could use 50 mm slabs on a hardcore base in which case you would need 13 slabs ( including Cutting

 

Including waste you would need .40m3 of Concrete or if you mix it yourself a 1 tonne dumpy bag of all in aggregate which will be about 45 sovs and three bags of cement which will be about 15 sovs at the builders merchants.

 

If not firm ground you will need 100mm of hardcore which would be another 0.4 m3 or 0.80 tonnes.

 

You will have some aggregate left over but this is the cheapest way to buy it.

 

Mix ratio of 1 part cement to 6 parts aggregate should be fine, dont make it too wet.

 

Hope this helps.

Agreed except at 6:1 you would need 6 or 7 bags of cement to a ton of aggregate. :good:

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