Cement 43 grade OPC packed in HDPE bag each 50 kg wt conform to IS 8112. 1989 Make Birla Gold or Ambuja or Ultratech or JK or Dalmia or ACC, Coarse sand free from vegetation, Coarse aggregate 20mm graded, Coarse aggregate 40mm graded, Coarse aggregate 40 to 63 mm graded, Stone Boulder 6 inches to 9 inches, 80mm thick coloured interlocking precast paver blocks conforming to IS 15658 of 2006 grade M40 size of Interlocking block 0. 250mm x 0. 125m equals 0. 03125 Sqm per block