concrete footings advice

[b21playa]

early in the new year will be start building block built shed in the garden (7m x 4m)

What size footings are required and how much concrete will be needed?

is it better to buy readymix and if so, what lengths can they deliver to as the she will be around 150ft from access.

Thanks

 

[noseall]

ideally the foundation width should be 300mm wider than the wall being built upon it. this allows for a 150mm projection beyond the internal and external faces of the masonry.

a minimum depth would usually mean digging down 1m. this is provided the ground is suitable at this depth, if it is not, go deeper.

the concrete needs to be a minimum os 225mm thick, though it is sometimes cheaper to mass fill. if ground contours allow, you could even fill to within 1 block below damp, though this would be risky. it does not allow for drain gulleys etc.

hire a concrete pump. they can pump 6m3 in a matter of minutes.

 

[noseall]

a footing size 600mm wide, 600mm thick and 22m long would require 8m3 of concrete.

...or 14 tonnes of ballast, 94, 25kg bags of cement and a lot of water.

pumped readymix me thinks.

 

[b21playa]

a footing size 600mm wide, 600mm thick and 22m long would require 8m3 of concrete.

...or 14 tonnes of ballast, 94, 25kg bags of cement and a lot of water.

pumped readymix me thinks.

how far can they pump it?

 

[noseall]

how far can they pump it?

about half a mile i think!

 

[b21playa]

how far can they pump it?

about half a mile i think!

god thats far

whts the rough price per cubic meter?

 

[noseall]

there is a company in Tamworth that do a job lot for about £230.00

 

[Balenza]

noseall is winding you up playa.
You can't pump concrete. Its far to stiff.
Use wheelbarrows instead.

 

[b21playa]

noseall is winding you up playa.
You can't pump concrete. Its far to stiff.
Use wheelbarrows instead.

right

cheers mate

 

[joe-90]

You can pump it but the machine on a lorry is extremely expensive. You often see them on major construction projects. You can't pump it overly far though.

 

[b21playa]

You can pump it but the machine on a lorry is extremely expensive. You often see them on major construction projects. You can't pump it overly far though.

i'll be there forever with wheelbarrows

 

[noseall]

i have used rigid boom and flexible boom concrete pumps.

'first pump' of Tamworth will do it for £230.00 ish.

unless you need to go over a building then a ground laid flexi-boom is all you will need.

150 feet is nowt.
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[noseall]

You can't pump it overly far though.

just how far do you think a concrete pump can go joe?

150 feet is a cakewalk.

 

[Balenza]

Its a wind up playa.

 

[noseall]

Its a wind up playa.

wtf Balenza!

http://www.concretepumping.com/index.php?mode=newboard&act=topic&tid=1849


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