providing of services-2 excavation in soil soft murum 3 excavation in hard murum 4 excavation in soft rock 5 excavation in hard rock 6 150 mm rcc round pipe connection wages 7 300 mm rcc round pipe connection wages 8 450 mm rcc round pipe connection wages 9 600 mm rcc round pipe connection wages 10 900 mm rcc round pipe connection wages 11 1200 mm rcc round pipe connection wages 12 round 21 inch chamber construction wages 13 refilling the trenches 14 crush metal spreading 15 crush metal -40 / 60mm spreading 16 crush metal -20mm spreading 17 hard murum spreading 18 compacting tha crush metal -20 / 40 / 60mm 19 compacting tha hard murum 20 m10 / m20 / m30 spreading