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New Delhi, February 14, 2010
The Delhi Metro Rail Corporation has installed specially designed parapets made of polycarbonate sheets at Dhaula Kuan, one of the busiest intersections in the capital, to give a sleek international look to the elevated portion of the Airport Express line.
Delhi Metro spokesman Anuj Dayal said the blue-coloured polycarbonate sheets would grace both sides of the Metro viaduct which crosses eight roads including the Ring Road, National Highway-8, Ridge Road and Sardar Patel Marg, which carry heavy volumes of traffic towards the Indira Gandhi International Airport (IGIA) and corporate hub Gurgaon.
Metro parapets are usually built of concrete, but the 1.9 m high polycarbonate sheets were preferred at Dhaula Kuan as they will significantly improve the aesthetics of the area. Moreover, they will ensure that the high-speed trains cannot be seen from the road below, Mr Dayal said.
This is the first time that polycarbonate sheets are being used as parapets in India. They havebeen used in the construction of some Metro systems in Europe.
According ot Mr Dayal, an advantage of these sheets is that they also act as sound barriers. The cleaning process is also simpler than ordinary parapets as they sheets can be cleaned with soft wet cloth or sponge.
The sheets will be installed along a length of 1,300 metres, including both sides of the viaduct above Dhaula Kuan intersection. The sheets, each of which is two m wide and 6 mm thick, are being affixed on fire retardant and ultra-violet resistant aluminum alloy structure using gaskets and self drilling zinc coated screws. Each side of the viaduct will have 320-330 such sheets.
To install the sheets, trolley system with full steel structure and wire ropes are being used. All safety measures have been taken into consideration to execute the work, he said.
The installation of the sheets started in October 2009 and is expected to be completed by April this year as in a day, eight to 10 such sheets can be installed.
The Airport Express Line connecting the New Delhi railway station to the Indira Gandhi International Airport (IGIA) will be 22.7 km long with six stations. It is scheduled to be opened in September 2010, ahead of the Commonwealth Games that Delhi slated to host in October.
About 15.7 km of the 22.7 km route will be undergound. Trains will travel on the route at a speed of 135 km per hour, helping people travel from the New Delhi railway station to the airport in about 18 minutes. Each of the trains will have six coaches, with half a coach especially designed for baggage containers. The frequency of the trains will be every two minutes.
There will be six stations on the route: New Delhi, Shivaji Stadium, Dhaula Kuan, Delhi Aerocity, IGI Airport, Dwarka Sec. 21.
There will be City Airport terminals, with check-in facilities, at New Delhi, Shivaji Stadium and Dhaula Kuan, Mr Dayal added.