BENGALURU (Metro Rail News): Bangalore Metro Rail Corporation Limited (BMRCL) has launched its first U-girder on Sunday, 19 June at Doddanekkundi on the ORR-Airport line. The first U Girder span was placed between two pillars near Bagmane Tech Park on 18 June.
U-girders can be erected quicker unlike box girders used in phase-1 and therefore they will be laid on both Phase-2A (Central Silk Board to KR Puram) and Phase-2B (KR Puram to Airport) lines.
BMRCL officials said that the use of the U Girder on this line will help in accelerating the project. In phase I and phase II of the project, the BMRCL used a box girder to build the elevated corridor for which they needed 5 to 6 days to place ten segments of box girders even with the help of huge cranes, whereas now, the single span of the U girder can be erected overnight.
Two cranes, which can carry a weight of 700 tonnes and 400 tonnes respectively, were used to lift and place the girder. Around 1,600 U-girders will be laid along the two lines and it could take between 1.5 to 2 years for work to be completed, a BMRCL official informed.
The BMRCL is building a 58 km ORR-Airport metro line from the Central Silk Board to Airport via K.R. Puram, Nagawara and Hebbal and between Central Silk Board and K.R. Puram, the BMRCL is implementing the project in two packages.