The Public Works Department (PWD) has initiated the deployment of factory-manufactured precast drains throughout Delhi as part of its drain remodelling initiatives, aimed at tackling the persistent waterlogging problem in the city. This initiative signifies a transition from the traditional cast in-situ method to precast technology, which officials assert will greatly improve durability and efficiency. “As part of the Delhi Drainage Master Plan, we are undertaking drainage renovation work utilizing precast drain technology for remodelling projects.
The impact will be extensive, as these drains have a lifespan of approximately 50 years, in contrast to the cast in-situ method, which lasts only five to six years,” stated PWD Minister Parvesh Sahib Singh. The long-term strategy for upgrading the existing drainage system in the national capital is a component of a larger plan to enhance monsoon preparedness and mitigate urban flooding. Earlier this year, the government introduced a new drainage master plan aimed at fulfilling the city’s drainage needs over the next three decades.
This master plan outlines the responsibilities of all relevant departments, including the PWD, which oversees around 2,152 kilometres of drainage infrastructure. “Currently, in various locations such as Gyan Shakti Mandir Marg, Chhoturam Marg, Azadpur-Camp Chowk corridor, Sultanpuri, Rohini, Nangloi Road, Maharaja Agrasen Marg, and several other critical areas where drainage enhancement projects are underway, this technology is being implemented,” an official remarked. These areas are primarily situated in North and North-West Delhi.
The strategic shift will also help alleviate pollution-related issues. Previously, when cast-in-situ drains were constructed, contractors would place all construction materials on-site, leading to traffic congestion in the vicinity. “Employing precast Reinforced Cement Concrete (RCC) drain technology guarantees quicker construction, enhanced durability, and improved water flow capacity.
Tenders have been issued for multiple projects, and additional drain remodelling initiatives are forthcoming,” Singh added.Upon completion, the enhanced drainage systems are anticipated to greatly enhance the storm water flow and mitigate flooding risks in numerous densely populated regions.
The minister further stated that it is now compulsory for all drain renovation projects to utilize precast drains. By the end of March, the government has successfully extracted 14 lakh metric tonnes of silt from all drainage systems, with a goal of removing 28 lakh metric tonnes of silt from the drains before the onset of the monsoon season.
