Lowering and Providing of RCC slab over CRS masonry Air Valve Chamber on 1050mm 762mm dia PSC gravity main from Control Room to Sanathnagar and from Sanathnagar to Prakashnagar from Bharathnagar Flyover to Narsapur X Roads and Lowering and Providing of RCC slab over CRS masonry Air Valve and Scour Valve Chamber and shifting of Air Valves on 1200mm dia and 800mm dia PSC Gravity main from Hydernagar to Alwal from PJR Status road No 65 to PJR Status Jagadgirigutta under SD-II O&M Division No XXI Control Room Secunderabad in(2)Slices