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For what is being termed arsenic the archetypal clip successful Karnataka, Ultra High-Performance Fiber Reinforced Concrete (UHPFRC) exertion volition beryllium utilized to conception elevated corridors, arsenic B-SMILE gears up to instrumentality its ambitious 11 elevated corridors task aimed astatine decongesting Bengaluru.
B.S. Prahallad, Technical Director of B-SMILE, told The Hindu that the UHPFRC exertion was planned to guarantee faster completion and improved prime and aesthetics.
“The UHPFRC, a blase factual mix, offers greater durability and does not necessitate reinforcement bars, which are traditionally used. This factual premix has the spot to withstand pressures of up to 150 MPa, portion mean factual mixes person lone one-third of this strength,” Mr. Prahallad explained. “It tin besides defy cracking nether load overmuch amended than accepted factual mixes,” helium added.
With these qualities, the durability of the elevated corridors volition summation significantly, according to Mr. Prahallad, who said it is 2 times higher than accepted structures.
Besides, the large happening astir the UHPFRC is that the exertion allows each span of the elevated corridors to beryllium moulded up to 50 metres. “In the city, we person flyovers and metro operation spans that scope from 20 to 25 metres and, successful immoderate cases, 30 metres. This volition let for a faster operation play and amended aesthetics, arsenic the spans volition beryllium longer,” said a B-SMILE source.
The UHPFRC exertion has been utilized successful 2 oregon 3 different States, but this volition beryllium the archetypal clip it is being utilized successful Karnataka, according to sources.
The B-SMILE has acceptable a task deadline of 18 months for each the elevated corridors. The peculiar intent conveyance (SPV) has floated tenders for constructing 8 flyovers and a people separator, with the full civilian operation outgo estimated astatine ₹3,530.04 crore, portion the full task cost, including onshore acquisition and different contingencies, is estimated astatine ₹4,755 crore.
These structures are portion of the eleven elevated corridors that received Cabinet support past month. However, this task has faced sizeable backlash from activists for seeing elevated corridors arsenic the solution for congestion implicit improving nationalist transport.
Accountability ensured
Typically, the Bengaluru civic assemblage offers a liability and attraction play of 3 to 5 years depending connected the quality of the project. However, for this project, the SPV has acceptable a attraction play of 10 years, marking a modulation to stricter prime power standards.
Earlier, the B-SMILE had planned a 10-year attraction play for the Outer Ring Road redevelopment task successful eastbound Bengaluru. However, considering the complexity progressive successful that peculiar stretch, the B-SMILE resorted to a three-year attraction period. Therefore, the elevated corridors task volition beryllium the archetypal successful Bengaluru to mandate a 10-year attraction period.
Two flyovers to beryllium tolled
While each the 9 corridors for which tenders person been called volition beryllium escaped for commuters to use, the B-SMILE has planned to toll 2 different elevated corridors approved by the Karnataka Cabinet. The stretches planned to beryllium tolled are the 28-km corridor connecting Yeshwantpur and Old Madras Road and the 18.50-km agelong connecting Marenahalli Main Road (Ragigudda Junction) and Kanakapura Main Road.
These stretches volition beryllium tolled due to the fact that the operation volition beryllium undertaken nether the Hybrid Annuity Model (HAM) with 40% Viability Gap Funding (VGF).
