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Basics of Railway Engineering

Basics of Railway Engineering. At H.Q. Level. AT DIVISIONAL LEVEL. AT SUB-DIVISION LEVEL. Permanent Way. Consist of- Rails Sleepers Fittings and fastenings Ballast Formation. Permanent Way. Different terms used on field. Fish plated track Free rail track SWR track LWR track SEJ

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Basics of Railway Engineering

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  1. Basics of Railway Engineering

  2. At H.Q. Level

  3. AT DIVISIONAL LEVEL

  4. AT SUB-DIVISION LEVEL

  5. Permanent Way Consist of- • Rails • Sleepers • Fittings and fastenings • Ballast • Formation

  6. Permanent Way

  7. Different terms used on field • Fish plated track • Free rail track • SWR track • LWR track • SEJ • Track circuiting • Glued joint

  8. Different terms used on field • Main line • Single line, • D/Line • Multiple line • Loop line • Sidings • Dead Ends • Catch siding • Slip siding • Block section

  9. Rails Functions –To Provide continuous and level surface for movement of trains. • To serve as a lateral guide for running of wheel. • To bears the stresses developed due to vertical load. • To transmit the load to a large area of formation. • Types of Rails – Double headed, Bull headed and Flat footed. • Parts of Rail – Head, web, flange, gauge face side, non gauge face side, fishing zone etc

  10. Flat footed rail Double headed rail Bull headed rail

  11. Fish plate

  12. Various Types of Fish plates and Their usage • Ordinary fishplate : Used in normal cases. • 1 m long fishplate : Used for repairs to rail fracture, Laying of LWR etc. • Joggled fish plate : Used to protect defective / fractured weld. • Combination fishplate : Used to join different section of rails

  13. Sleepers Main function - Holding rails to correct gauge and alignment. • Firm and even support to rails. • Transferring the load evenly from rails to wider area of ballast. • Elastic medium between rails and ballast. • Providing longitudinal and lateral stability. Sleeper Density – Marking in straight and curved track.

  14. Joint sleeper, shoulder sleeper • Supported joint and suspended joint. • Introduction of different type of fittings of wooden and PSC sleepers • ERC • MCI insert • Rubber pad • Liner

  15. General • System of numbering of Km post in Rlys. • System of identification of RH and LH rail. • Numbering of Bridge No. • Curve – RH or LH curve • Transition curve • Station marking in curve • Painting of Stn No. and SE • Curve board

  16. General Meaning of – • Packing of sleeper • Over hauling • Deep screening • Creep • pulling back • Buckling • Classification of Rly lines – A, B, C … • Accident – meaning of Accident in Rly working.

  17. Track Parameters • Gauge – Minimum dist. Bet. Running faces of two rails. • Unevenness – Difference in longitudinal levels over a fixed base (generally 3.5M) • Cross level difference – Relative difference in the level of two rail tops measured at the same point. • Twist – Change in cross levels per unit length of measurement. Base is normally 3.5 meter (Unit - mm/meter)

  18. Contd. … • Alignment – Variation of versines taken on successive chords of fixed length with overlaps of half chords. • Measured over a base of 7.5 meter • Measured for right and left rail separately

  19. Points and Crossing • Turn out RH T/O, L/H T/O • Similar flexure, contrary flexure • Cross over • Diamond • Diamond with single slip, double slip • Traps • Scissor cross-over • Gathering lines • Triangle • T/out and T/in curve

  20. Different Indicators near track • Km Post • Hectometer post • Gradient post • Fouling mark • Creep post • Rail boundary posts etc

  21. Different types of Indicators • Caution Indicators • Speed Indicators • Termination Indicators • Stop Indicators • Whistle Indicators • Fixing of Indicators

  22. Thanks

  23. SEJ

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