Concrete...

[GazSuttonUK]

Hi,
I want to make a hard standing for a car.

I have dug down 12 inches.
Is that deep enough for the weight of a car?
How many inches for the hardcore?
How many inches for the concrete?

I have a cement mixer and have done shed bases before but never something like this.

Any help much appreciated.

 

[PrenticeBoyofDerry]

100-150mm (4-6 inch) hardcore sub-base
100mm (4 inch) concrete.
should do the job fine.

 

[GazSuttonUK]

100-150mm (4-6 inch) hardcore sub-base
100mm (4 inch) concrete.
should do the job fine.

Thank you very much for your help.

Whats the best sand/mix to use?

Cheers.

 

[PrenticeBoyofDerry]

This should help you work out the materials required.
http://www.source4me.co.uk/calculate_concrete_mix.php

 

[GazSuttonUK]

This should help you work out the materials required.
http://www.source4me.co.uk/calculate_concrete_mix.php[/QUOTE]
Thank you, very helpful.

 

[PrenticeBoyofDerry]

Use sharp sand and a 20mm aggregate, that will be strong enough for driveway/parking port.

 

[studips]

get yourself a quote for ready mix, you might be surprised how competitive it is compared to buying ballast & cement from your local wickes. you won't be surprised how hassle free it is though.

i use a mobile mix on site & a bulk premix service depending on what i'm doing, access etc.

only trouble with premix is you need to be well prepared, have help on site, ready and equipped (wellies, strong frame, tamping bean, shovels etc)

 

[PrenticeBoyofDerry]

I agree studips, can be less hassle getting ready mix, one pour and the jobs done, no varriation in mixes neither and the pour is curing at the same rate.
So could well be worth enquiring on prices.

 

[GazSuttonUK]

Good idea about pre mix, but unfortunately I have bags of cement and sharp sand from a recent extension that I need to get rid of/use.

Maybe a completely stupid question for a car hardstanding but do I need to lay a damp proof?

Cheers.

 

[PrenticeBoyofDerry]

Not for driveway/car parking port.