metro corridor project
Shankaranarayana Constructions (SNC), which bagged the 9.8-km elevated metro corridor contract on the Outer Ring Road at ₹623.55 crore, has launched test piling work at KR Puram for the Bangalore Metro Rail Corporation Ltd (BMRCL). The company, which won its first Metro project about six months ago, has been quick to start the groundwork. Test piling will be taken up in about 5-6 places along the corridor. The metro stretch, comprising of six metro stations between Kodibeesanahalli and KR Puram, is part of a 14-km Phase II-A project awarded to Bengaluru-based SNC. Afcons Infrastructure has won the remaining section of the project up to Central Silk Board for ₹785.25 crore. Interestingly, the BMRCL will be using U-girders on the ORR, which is being adopted by the BMRCL. In operational Phase I and under-construction Phase II projects, the BMRCL used the traditional box-girders with pre-cast segmental construction. U-girders help in saving time for construction. The length of each U-girder is around 28 metres as against box-girders which are just 2-3 metres long. One U-girder, which is readied at the casting yard, will be wide enough to be placed between two pillars whereas box-girders will have many segments stitched together to complete a viaduct. Transporting U-girders from the casting yard to the construction site might be challenging as a 500-tonne truck is needed to transport one U-girder. The company said that it is capable to erect three U-girders a day and hopes to complete the construction work in two years.