Search results

Will have to rethink and thanks for all info' and on the rebar.

Not sure might be over kill on my part. I have 2 levels of ground, one side of the curb, higher level, will only ever be grass and earth. Other side, lower level, will be a concrete and gravel driveway. Not a huge driveway area but the curb mix must be strong enough to resist any ground push...

Thanks, that's an expensive curb, £10 a bag, might buy a bulk bag of ballast, 15 bags of cement and make up to N40.

A high curb more then anything but needs to be a strong mix. Locally purchased high concrete gravel boards would have done but not thick enough and only a N20 mix, not strong enough for my needs. So can either shutter in situ' and make N40 grade concrete or buy bags of N40 premixed concrete...

15m length x 300mm high ( of which 100mm will be in the ground over entire length ), x 75mm thick.

Thanks, with the dimensions I gave, 30 bags of N40 premix at 20kg per bag?

To small a mix for a pump so it's a manual mix only.

It doesn't have to that smooth but what is the bag ratio for my requirements?

thanks will that ratio make N40 grade concrete? If I buy 20kg bags of premixed N40 grade concrete, how many bags should I require?

Like to make N40 strength gravel board mix or retaining wall. 15m length x 300mm high x 75mm thick. My only 2 options due to site limitations. Barrow mix with paddle and pour, how many bags of 20kg ballast, how many bags of 25kg cement will I require? Other option. Premixed, 20kg bags of...