Help GEN3 Ration Mix

[Prodigy1978]

Hi all,

Can someone please tell me what ratio mix I need to cast a 750 x 750 x 300 padstone/foundation stone. I have been quoted £300 for a company to cast it for me......Seems a little pricey I say.

I understand the mix would be cement, sand and aggregate, but to what mix???

Cheers

 

[noseall]

Are you talking about a portable item or a cast in-situ shuttered block or a regular foundation i.e dig hole fill with concrete?

Most foundations are poured using say 6 parts ballast to 1 part cement.

 

[Prodigy1978]

Thanks no seal.

Would this be the same mix as a padstone? I was requested by the structural engineer to fit a 750 x 750 x 300 padstone in the ground for a vertical beam to bolt to. The building control officer mentioned to dig down to foundation level and then arrange another appointment so he can check the depth. Would I be able to pour this mix ontop of the existing foundation or would this cause problems? at present I have dug a 700mm deep hole and have just reached the top of my foundation, I presume I will have to remove 3 courses of engineering bricks and pour through? sound correct?

Thanks.

 

[noseall]

You would normally surround the existing concrete with the new concrete and dig underneath it, making your new concrete finish higher than existing.