Country’s first 31-meter U-girder successfully cast for BSRP

Kalpa Media House  |  Bangalore  |

To facilitate the speedy completion of the Bengaluru Suburban Rail Project, for the first time in the country, 31-meter long, single-span U-girder has been successfully cast on Saturday night at Casting Yard in Devanahalli.

According to Infrastructure Development Minister MB Patil, “So far, 28-meter-long U- girders have been used in other metro projects. This is for the first in the country it has been planned to use 31-meter long U-girders for BSRP.”
For the first time, these girders will be used to construct a viaduct (elevated section) of around 8 km from Hebbal to Yeshvantpura which is a part of the ‘Mallige’ line or Corridor 2 of BSRP.

Each of these U-girders which allows the track to be laid right away is made of 69.5 cubic meters of M60 grade concrete and weighs 178 tonnes and Corridor 2 requires 450 such U-girders.

Claimed as an engineering marvel, this 31m U-girder has been designed by Assystem STUP for BSRP and proof-checked by IIT/Madras. Third-party design evaluation has been done by a General consultant (JV of Egis, Aecom and WSP). Entire supervision, precision execution, and quality control were closely monitored by K-RIDE.
Applauding the feat, M.B Patil said “It’s a momentous occasion that a single span 31-meter-long pre- tensioned U-girder has been successfully cast here in Bengaluru, for BSRP that is expected to be a game changer project for commuters’ facility.”

According to K-RIDE sources, one single-span U-girder between two pillars can be built in a single night. Unlike box-girders or I-girders, track laying on these girders can be done right away and the use of 31-m single span girder will reduce the number of piers and foundations as compared to 28-m girder resulting in saving time for completion of civil works.

(Report: D.L. Harish)

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