SW- I )" Annual Zonal Contract- Alongside the Railway track yard from Krishna Bridge ( i.e., ) Km. 425/ 27- A for West line and Km. 425/ 27- A for East line to Km. 431/ 6 & 7 for both slow & fast lines towards Visakhapatnam side and upto Km. 569/ 0- 1 towards Secunderabad side including all service buildings, staff quarters alongside the track and Rayanapadu including, West Booking Office, Supervisors and Officer ' s Rest Houses, RRI cabin all cabins and Goods shed within the yard and Mineral siding and road leading to ELS from Mineral siding and all track works upto Km. 569/ 0- 1 in ADEN/ BZA Jurisdiction for the period 01. 07. 2024 to 30. 6. 2025. SW- II ) Annual Zonal Contract- Repairs and maintenance of water supply system of all Staff quarters, service buildings under SSE/ Works/ WA/ BZA section including Staff quarters and service buildings at Rayanapadu and Kondapalli stations in the sub- divisions of ADEN/ Buildings/ BZA and ADEN/ BZA for the period 01. 07. 2024 to 30. 06. 2025.