The efficiency of Lean at work in the Nagpur Metro
RAILWAYS & METRO RAIL

The efficiency of Lean at work in the Nagpur Metro

Nagpur Metro Phase 1 consisted of two corridors, North-South and East-West, with a total length of 41.7 km. Of this, 17.087 km (41 per cent of the viaduct) was awarded to Afcons in the Reach 2 (North-South corridor) and Reach 3 (East-West corridor) stretches. Afcons executed the Reach 2 package in the North-South corridor, which consists of a 5-km double-decker structure and 1.7-km metro viaduct structure that starts from Automotive Square on Kamptee Road and ends at Sitabuldi.

The double-decker flyover structure consists of two decks: flyover level and metro level. The decks are constructed with precast segments. The flyover level consists of two segments: spine and wings. The team adopted Value Stream Mapping (VSM) to improve the cycle time by ~50 per cent, from 28 days to 14 days. Some key interventions were:

  • Improvement in sequence of construction operations allowing for simultaneously launching wing segments and launcher (after erection of three cantilever arms)
  • Analysis of idle time to optimise use of trailers for transportation of both segments and wings
  • Simultaneous operations for wings alignment, shutter fixing and rebar fixing
  • Minimising time at site operations through use of boom placer instead of stationary pump and higher grade of concrete
  • Use of manlift for stressing to decouple working site and ground traffic.

Nagpur Metro Phase 1 consisted of two corridors, North-South and East-West, with a total length of 41.7 km. Of this, 17.087 km (41 per cent of the viaduct) was awarded to Afcons in the Reach 2 (North-South corridor) and Reach 3 (East-West corridor) stretches. Afcons executed the Reach 2 package in the North-South corridor, which consists of a 5-km double-decker structure and 1.7-km metro viaduct structure that starts from Automotive Square on Kamptee Road and ends at Sitabuldi. The double-decker flyover structure consists of two decks: flyover level and metro level. The decks are constructed with precast segments. The flyover level consists of two segments: spine and wings. The team adopted Value Stream Mapping (VSM) to improve the cycle time by ~50 per cent, from 28 days to 14 days. Some key interventions were: Improvement in sequence of construction operations allowing for simultaneously launching wing segments and launcher (after erection of three cantilever arms)Analysis of idle time to optimise use of trailers for transportation of both segments and wingsSimultaneous operations for wings alignment, shutter fixing and rebar fixingMinimising time at site operations through use of boom placer instead of stationary pump and higher grade of concreteUse of manlift for stressing to decouple working site and ground traffic.

Next Story
Infrastructure Urban

3i Infotech Reports Rs 7.25 Bn Revenue for FY25

3i Infotech, a leading provider of digital transformation, technology services and technology solutions, announced its consolidated financial results for the fourth quarter and full year FY25, ended on March 31st, 2025. The company maintained its growth momentum, displaying consistent progress for the 3rd consecutive quarter.In Q4 FY25, 3i Infotech reported revenue of Rs 1.87 billion, reflecting steady performance compared to Rs 1.81 billion in Q3 FY25 and Rs 1.97 billion in Q4 FY24. The company delivered strong profitability improvements, with gross margin growing by 14.8 per cent Q-o-Q and 1..

Next Story
Infrastructure Urban

Emerald Finance Joins Baya PTE to Boost SME Bill Discounting

Emerald Finance is a dynamic company offering a spectrum of financial products and services including its flagship Earned Wage Access (EWA) in India, has entered into a strategic partnership with Singapore-based Baya PTE through its Indian subsidiary. This collaboration aims to strengthen bill discounting services for Small and Medium Enterprises (SMEs), enabling faster access to working capital and improved cash flow management.The initiative is designed to support SMEs that supply to large corporates such as JSW Steel, Delhivery, and PVR INOX, among others. By facilitating timely invoice dis..

Next Story
Infrastructure Urban

BLS E-Services Crosses Rs 5 Bn Revenue Mark in FY25

BLS E-Services, a technology-enabled digital service provider, announced its audited consolidated financial results for the quarter and full year period ended 31 March 2025.Speaking about the performance and recent updates, Shikhar Aggarwal, Chairman, BLS E- Services said, “We are delighted to report a remarkable performance in FY25, as we achieved several milestones during the fiscal year. FY25 marked our highest-ever financial performance, as we surpassed Rs 5 billion milestone in Total Income during the year, which was reported at Rs 5.45 billion, a notable YoY growth of 76 per cent. The ..

Advertisement

Advertisement

Subscribe to Our Newsletter

Get daily newsletters around different themes from Construction world.

STAY CONNECTED

Advertisement

Advertisement

Advertisement

Advertisement

Talk to us?