What are the common configurations of IR coaches?

22-06-2019

The BG 3-tier sleeper coach is very common, and provides accommodation for 72 persons. Each compartment in it has 6 berths: 3 seats forming a bench on either side of the compartment; these form two bunks, the back-rests of the seats fold out to become bunks at night, and lastly, there are two bunks further up. Across the aisle from a compartment two shorter berths are provided along the length of the coach. Air-conditioned 2-tier sleeper coaches have 46 berths (there is space for 48, but two slots for berths are taken up by equipment, either overhead or on one side at one end. The LHB 2-tier AC coaches have 54 berths. The AC 3-tier sleeper coaches have 64 berths while the LHB AC 3-tier

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What are the typical placement specifications for check rails or guard rails?
July 18, 2019

Wheel flanges on IR are typically about 28mm thick (new). The distance between the inner faces of wheels is typically 1600mm (BG). Check rails used to prevent wheels from climbing the rails at sharp curves are kept at a distance of about 44mm-48mm from the outer rail, allowing about 4mm tolerance for wear on the check rails. Check rails at level

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What is the relationship between speed, turning radius, and track cant? What are the cant excess / deficiencies specifications for IR tracks?
July 18, 2019

Super-elevation, or cant, is provided to counteract the centrifugal tendency of trains on curves. On a canted curve (where the outer rail is higher than the inner one of the curve), the weight of the vehicle provides a component that counteracts the centrifugal tendency. Cant excess refers to the condition where the cant or superelevation is too

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What dimensions of sleepers does IR use?
July 18, 2019

Wooden BG sleepers dimensions are usually 2.75m x 0.25m x 0.13m. MG wooden sleepers are 1.8m x 0.2m x 0.115m. NG sleepers are usually of the same thickness as MG sleepers, and are often made by cutting MG sleepers (sometimes discarded ones) to size and adding a new seat for the track. Most sleepers on the Darjeeling Himalayan Railway are wooden,

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What does the notation ‘N+4’ or ‘M+3’, etc., mean in describing sleeper densities?
July 18, 2019

This notation is an old one. The 'N' or 'M' in this stands for the length of a rail in yards. The additional number specified represents the excess of the number of sleepers over the number of yards for a rail. E.g., 'N+3' for 11-yard (33') rails indicates 14 sleepers (11 + 3) for each rail. This was a convenient formulation, especially when rails

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What sleeper spacings does IR use?
July 18, 2019

Broad Gauge (See table below.) Most BG mainline sections now have about 1660 sleepers per km (about 60cm spacing); the earlier standard used to be 1538 sleepers per km (about 65cm spacing). BG branch lines may have 1540 sleepers per km (about 65cm spacing) or 1340 sleepers per km (about 75cm spacing); the older standard was 1307 sleepers per km

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What rail fasteners does IR use?
July 18, 2019

IR uses various kinds of Pandrol design fasteners, ERC Mark III (850-1100kg toe load), and ERC Mark V (1200-1500kg toe load) (the latter developed by RDSO). Pandrol 'J' clips, often yellow in colour, which have a lower profile and lower toe load), are used where they need to be removed and reinserted easily and where ordinary clips might interfere

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Raipid Rail क्या है? कैसे बदलेगा शहरों का भविष्य | Delhi-Meerut RRTS पूरी जानकारी

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