rate contract of building material for financial year 2020-21 at grampanchayat kotra tah . korchi , material supply , sand , murum , bricks , cements grade-53 , metal 80mm hand , metal 40mm kreshar , metal 30mm kreshar , metal 20mm kreshar , metal 12mm kreshar , metal 10mm kreshar ( churi ) , steel 18mm , steel 16mm , steel 12mm , steel 10mm , steel 08mm , binding wire ( centring wire ) , pvc pipe 110mm , pvc pipe 90mm , paving blocks , tiles ( ceramic ) , vetrified tiles 2x4 , iron sheet , iron angle , iron door with frame and palla , iron window with frame and palla , chicken mesh net , water proofing liquid , water proofing polymer , asian paints , mixture machine with operator , jcb with operator , tractor with driver and labours , tractor water tanker with driver , nails