52 kg rail height

Last updated on Mar 30, Get Started. SSC Exams.

The rail profile is the cross sectional shape of a railway rail , perpendicular to its length. Early rails were made of wood, cast iron or wrought iron. All modern rails are hot rolled steel with a cross section profile approximate to an I-beam , but asymmetric about a horizontal axis however see grooved rail below. The head is profiled to resist wear and to give a good ride, and the foot profiled to suit the fixing system. Unlike some other uses of iron and steel, railway rails are subject to very high stresses and are made of very high quality steel. It took many decades to improve the quality of the materials, including the change from iron to steel. Minor flaws in the steel that may pose no problems in other applications can lead to broken rails and dangerous derailments when used on railway tracks.

52 kg rail height

Post a Comment. In FPS units, it is the weight in lbs per yard and in metric units it is in kg per metre. The weight of a rail and its section is decided after considerations such as the following:. The two heavier rail sections, 60 kg and 52 kg, were recently introduced and are designated in metric units. Other rails are designed as per the revised British Standard specifications and are designated in FPS units though their dimensions and weight are now in metric units. In the nomenclature 90 R, 75 R, etc. Sleeper may be of pre-tensioned or post-tensioned priestess concrete confirming to Indian Railway design. The dimensional details of concrete sleepers are given below for information:. Reinforcement : 18 nos. Service Life : 50 to 60 years. Indian Railways is modernizing its track in a big way to meet the challenges of heavier traffic at faster speeds. Prestressed concrete sleepers are most economical and technically best suited for high speeds and heavy traffic density.

University of Delaware Press. Jharkhand High Court Assistant. The noise generated by trains passing over the rail joints, described as "the clickity clack of the railroad track", can be eliminated by welding the rail sections together.

The permanent way sections are classified by IR according to the maximum speed or more precisely, the maximum speed proposed for the immediate future that the tracks are capable of supporting. In most cases this classification is more an indication of the priority of the route and IR's plans for it in the future, rather than an indication of the speeds allowed on it today. Also, some small stretches of a line may have much higher or lower allowed speeds than the classification of the line might indicate because of local conditions, mountainous terrain, sharp curves, etc. These are:. In , there were mentions of the Ratnagiri - Sawantwadi section of KR being included in the A class, but no confirmation of this was found.

The permanent way sections are classified by IR according to the maximum speed or more precisely, the maximum speed proposed for the immediate future that the tracks are capable of supporting. In most cases this classification is more an indication of the priority of the route and IR's plans for it in the future, rather than an indication of the speeds allowed on it today. Also, some small stretches of a line may have much higher or lower allowed speeds than the classification of the line might indicate because of local conditions, mountainous terrain, sharp curves, etc. These are:. In , there were mentions of the Ratnagiri - Sawantwadi section of KR being included in the A class, but no confirmation of this was found. C Class : This is not really a speed-rated class, but is the classification used for suburban sections of metropolitan areas. These lines cover many sections in Central India where mining and related industries are common. Lines in this class also include many feeder and branch lines that connect to those in the A and B class. An exhaustive list of these lines can be found here.

52 kg rail height

Rails are the members of the track laid in two parallel lines to provide an unchanging, continuous, and level surface for the movement of trains. To be able to withstand stresses, they are made of high-carbon steel. Standard rail sections, their specifications, and various types of rail defects are discussed in this section. Rails are similar to steel girders. They perform the following functions in a track:. The friction between the steel wheel and the steel rail is about one-fifth of the friction between the pneumatic tyre and a metalled road. The requirements of an ideal rail section are as follows:. The requirements, as well as the main considerations, for the design of these rail components are as follows:. The head of the rail should have adequate depth to allow for vertical wear. The rail head should also be sufficiently wide so that not only is a wider running surface available, but also the rail has the desired lateral stiffness.

Decathlon foldable bag

Rajasthan Home Guard. Haryana Police. Until about , most sections had RBS standard rails of Serial production and supply of m rails started in February In the past, since IR used direct discharge toilets for passenger trains, corrosion resulting from toilet waste was a significant problem on some lines, and especially at approaches to major stations where many busy lines converged. February Konkan Railway has developed something they call self-stabilising track, which aims to reduce or even eliminate the problem of ballast being de-compacted and dispersing under the action of vibrations set up by moving trains. Bank of Baroda PO. Gujarat High Court Assistant. Nainital Bank Clerk. This rail is a modified form of flanged rail and requires a special mounting for weight transfer and gauge stabilisation.

Railroad rail, railroad track , or train track rail, is a key component of railroad systems. Most of the railroads are constructed by two parallel rails laying on railroad ties.

In practice, this form of recycling was not very successful as the chair caused dents in the lower surface, and double-headed rail evolved into bullhead rail in which the head was more substantial than the foot. Central Bank of India Sub Staff. The problem was first reported by Richard Trevithick in SBI PO. The ballast regulating machines, which help transfer ballast and keep an even profile across the entire trackbed, are made by Kershaw. Archived from the original on 4 October Visva Bharati LDC. Rajasthan Gram Vikas Adhikari. Tongue rail 3. Indian Air Force Group C. Bihar ANM. Retrieved 4 May