During its execution, L&T set several records in terms of the amount of materials used such as concrete and steel, in an extremely challenging operating environment. Some highlights:
Materials: High on quality
SV Desai, Senior Vice-President & Head-Heavy Civil Infrastructure IC, L&T Construction, shares the major daily average material consumption during peak time:
L&T system formwork: Was used for its low heat conductivity that prevented loss of heat that reduced stripping and cycle time and for its smooth finish and elegant appearance as well.
Sheet pile for seepage arrest in cofferdam: Sheet piles of 10 m depth were driven along the periphery of the cofferdam to reduce the seepage from the flowing river during monsoon and non-monsoon periods. The project consumed 2,500 mt of sheet pile to minimise the seepage.
Equipment used for construction included wheel-loaders, ice and chilling plants, hydraulic, pick-and-carry and tower cranes, bull-dozers, excavators, dumpers, and automated pull-through welding and automated CNC cutting machines.
Construction of the raft foundation required ground improvement. Desai elaborates, “The geotechnical investigation revealed certain weak areas in the ground strata that required strengthening. While methods like vibro compaction, dynamic compaction or rapid impact compaction are available, they are also time-consuming and costly. After a thorough analysis, we adopted the cement stabilisation dry-and-wet method.”SERAPHINA D’SOUZA