NEW DELHI (Metro Rail News): National Capital Region Transport Corporation (NCRCTC) has successfully installed all six steel spans on the Delhi section of the RRTS Corridor. These special steel spans have been installed to make the RRTS route cross the Ghazipur drain & Kondli roundabout on its way to Anand Vihar from Ashok Nagar.
Milestone
It is the first of a kind to be installed for the Regional Rapid Transit System (RRTS) corridor. The spans have been installed one after the other, for it is the longest viaduct to be made for the RRTS so far with special steel spans. This engineering marvel debuts as an important landmark for RRTS as it strides towards manifesting the vision and aspiration of connected and robust transportation.
Specifications
The total number of steel spans adds up to 360 meters, with three spans of 70 m in length each & the remaining three of 50 m in length each. These spans are nearly 14 m wide with a weight of 540 tonnes each. These are massive structures containing heavy beams made of structural steel.
Installation
The spans were first manufactured in a factory and then loaded onto the trailers for transporting them to the installation site. These are then assembled at the site by properly joining them using some special techniques. These are designed to suffice the requirements of construction, installation & usage.
Challenges
The Gazipur drain is about 40-50 meters wide, and the RRTS corridor crosses it diagonally. The deep foundations to be made for the pillars posed a tremendous challenge. The installation site also had hurdles like roads, large pipelines, high-tension lines, etc.
Peculiar Case
Generally, NCRTC constructs pillars at a distance of 34 meters to facilitate the installation of viaducts, but in exceptional cases of corridor crossing rivers, rail crossings, expressways, metro corridors, etc, maintaining the metric is quite a challenging task. In such cases, spans are used to connect the pillars.
This particular development has taken up the total number of steel spans on the RRTS corridor to 12, with the remaining six being installed at different locations, namely Meerut (1), Vasundhra (1), Ghaziabad (1), Duhai Depot (2) & Eastern Peripheral Expressway (1).
Delhi-Meerut RRTS
RRTS is an 82.15 Km long mass rapid transit system being built from Delhi’s Sarai Kale Khan to connect Delhi, Ghaziabad & Meerut. The Delhi-Ghaziabad-Meerut corridor is being built at a cost of Rs 30,000 crore. The priority corridor inaugurated by PM Modi spans 17 Km with five stations: Sahibabad, Ghaziabad, Guildhar, Duhai, and Duhai Depot.
PM Narendra Modi inaugurated India’s first RAPIDX train, named Namo Bharat, from Sahibababd Station on 20th October. The Namo Bharat trains will run at a maximum speed of 180 kmph, costing around Rs 20- Rs 50 for standard coaches & Rs 50- Rs 100 for premium Coaches.
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