U need 130 bags of cement , Y 10mm 60 Length , Y16mm 58 Length ,Y12mm 1.5 tons , sand 30 tons , granite 45 tons . the challenge in the country is fluctuations in material cost . 2.5 million will be enough including planks & others material with labour bill excluding service pipe works .for the detail analysis & breakdown of material needed contact me ibrahimolaniyi0213 @gmail.com .