tender for supply of precast rcc stone at bs dump under zone 04. - providing, transporting, hoisting and fixing above plinth level up to floor five level precast reinforced cement concrete in lintels, beams and bressumers, including setting in cement mortar 1:3 (1 cement : 3 coarse sand), cost of required centering and shuttering but, excluding the cost of reinforcement, with 1:1.5:3 (1 cement : 1.5 coarse sand (zone-iii) derived from natural source: 3 graded stone aggregate 20 mm nominal size derived from natural sources(d.s.r. vol.1/2023/ch.5 - 5.15) 2 mild steel or iron in plain work such as reinforced concrete or reinforced brick work(when not included in overall rates) wrought