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Conservation of Water in Metro Stations
Water conservation has been a key area of civil focus, especially due to high demand
at station premises with leased commercial outlets such as kiosks, restaurants, and
banks.
Rainwater Harvesting Systems have been installed at all metro stations. The
harvested rainwater is treated and reused for station utilities during the rainy
season, reducing dependence on KWA supply.
Rainwater Recharge Pits have been constructed to improve groundwater levels in
urban areas around the stations.
Borewells and Tubewells are being developed at high-consumption stations to
supplement supply during dry months and minimize recurring water bills.
At the Muttom Depot, treated water from ETP/STP is connected to the irrigation
system and is used for watering plants and landscaping. A similar arrangement exists
for the depot staff quarters, promoting circular reuse and ecological sustainability.
Noteworthy Interventions
A. FRP Lining in Steel Roof Gutters
Corroded and leaking steel gutters at selected locations were strengthened using
FRP (Fibre Reinforced Plastic) linings.
This allowed repairs without dismantling existing gutters.
FRP offered a lightweight, corrosion-resistant, and durable solution, making it both
cost-effective and less disruptive to operations.
B. Skylight Roof Replacement in OCC Building
At the OCC building in Muttom Depot, a heavy glass skylight broke during rainfall,
highlighting a structural risk.
The existing glass was replaced with a lightweight, UV-resistant polycarbonate
sheet, reducing the load on the supporting frames.
The change improved both safety and maintenance ease, while retaining natural
lighting functionality.
Future Focus Areas
Rainwater Leakage Arresting: Identifying and trialling new sealing methods and
materials to tackle recurring leakage challenges more effectively, especially
during monsoon periods.
Sustainable Replacement Materials: Exploring green, lightweight, and
maintenance-friendly materials for civil upgrades across the network.
Digital Condition Tracking: Enhancing maintenance data recording and
reporting using digital platforms for better planning, accountability, and faster
response.