Chennai Metro, India – Constructability Advice

118km of rail corridor

61% reduction in travel times

7% reduction in emissions

The Phase 2 of the Chennai Metro extension project at USD19bil has three corridors, extending the network by 118.9 km and adding 128 stations to the current network. Larsen and Toubro (L&T), India’s largest infrastructure contractor was awarded in 2021 4 construction packages with a construction costs of USD9bil and has 53 months to deliver the packages.

L&T has faced severe programme delays and costs increase due to land access, labour resources and construction over very busy built environment. L&T has requested KPMG India to relook at the delivery programme and provide a new delivery strategy to accelerate the programme including bringing systematic construction approach and enabling technology-oriented project management to reduce costs.

TSA Management were appointed as specialist advisors by KPMG for Phase 1, which was to carry out assessment of the current construction activities approach and advise on improvements that could help to compress the programme and reduce costs. TSA were also tasked to introduce new innovative construction methods to improve delivery speed and quality.

TSA successfully completed the assessment and provided recommendations to carry out value stream mapping of construction activities. The detailed analysis from the mapping led to schedule improvements in the site activities related to the elevated box girder bored piling and the cantilever crosshead delivery. TSA’s recommendations also included using innovative pile cut off technique using vacuum pumps to improve the quality and reduce bored pile operations.