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- 6 Oct 2010
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hi, can anyone tell me the amount of all in mix (sand@gravell) ,and cement, mixed at 3 to 1, to cover an area 36 ft x 16ft,, 6 inches thick, for a drive way. alternately if use coloured chippings at 4 inches thick, for the same area.what would be the approx amount, many thanks in advance.