Portland Cement Portland Cement , Portland Cement- Sand , Sand- Gravel , Gravel- RSB, 10mm x 6m , RSB, 10mm x 6m- Tie Wire, #16 , Tie Wire, #16- Marine Plywood, "x4`x8` , Marine Plywood, "x4`x8`- Good Lumber, 2" x 2" x 8` , Good Lumber, 2" x 2" x 8