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RedR CCDRR

Hi Lloyd,

Thanks for reaching out. I've passed along your question to some of our experts and one of them suggested utilizing this site here: https://source4me.co.uk/calculate_concrete_mix.php which provides information for a ratio of 1:2:4 which is the normal ratio for unreinforced mass concrete. You would need to make some adjustments for the 1:2:3 ratio, however.