The Kerala Water Authority (KWA) submitted a proposal for a new reservoir with a capacity of 35 lakh liters at Thammanam to a high-level committee.
The tank, to come up on utility-owned land in Thammanam, is planned after a partial collapse of a 1.35 million liter water tank led to a temporary crisis in the city.
The proposed ground tank will be 41 meters long and 17 meters wide and will have two chambers, each with a capacity of 17.5 lakh litres. The height of the water column in the new reservoir will be 5.4 meters compared to 4.2 meters in the old reservoir. The initial design was shared with a high-level authority created after the collapse of the twin-turret tank.
The reservoir, which was commissioned in 1985, was found to have partially collapsed after the foundation sank into the soil. A deep pile foundation was designed as part of the design to keep the foundation strong. “A sand pile was used for the old tank. Now we have designed a reinforced concrete pile for the new tank. Further, a monolithic jointless structure is planned for the new tank,” said KWA sources.
Since the tank will be exposed to a higher water column, all walls will be reinforced with supports or columns. The height of the water column will be higher in the designed tank to ensure status quo and maintain pressure. “Due to space constraints, we cannot consider a large tank. So we have proposed a tank of 35 million litres,” sources said. The tank will be spread over an area of about 20 cents.
Published – 29 Nov 2025 22:56 IST
