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Special Layouts

Special Layouts. Special Layouts. Symmetrical Splits Diamond Crossings Scissors Cross over. Symmetrical Splits. Diamond Crossing and Scissors Cross over. Schedule of Dimensions Pertaining to Special Layouts. Diamond crossing not to be flatter than 1 in 8.5.

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Special Layouts

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  1. Special Layouts

  2. Special Layouts • Symmetrical Splits • Diamond Crossings • Scissors Cross over

  3. Symmetrical Splits

  4. Diamond Crossing and Scissors Cross over

  5. Schedule of DimensionsPertaining to Special Layouts • Diamond crossing not to be flatter than 1 in 8.5. However, under special conditions 1 in 10 crossing can be permitted.

  6. Diamond Crossings • Formed when two tracks cross each other • If same gauge – rhombus • If different gauge – parallelogram • If at right angle – square diamond • Right angle diamond to be avoided • Slips are laid to provide arrangement to divert vehicles from one track to another • Single slip • Double slip

  7. Deficiency Of Diamond Crossing • While approaching the nose of obtuse crossing the wheel is not guided by check-rail for a certain length due to longer gap. • How to overcome : • Top level of check rail is raised by 25 mm • Flange way clearance is reduced from 44 mm to 41 mm (BG)

  8. Scissors Cross–Over • To enable transfer of vehicles from one track to other and vice-versa • Provided where space does not permit provision of two separate cross overs • Consists of four pairs of switches. Six acute crossings, two obtuse crossings and check rails.

  9. Special LayoutsSymmetrical Splits

  10. Special Layouts1 in 8.5 B.G 52 Kg Diamond Crossing on PSC Sleepers • Without slips : RT- 5362 • With Single Slips : RT- 5363 • With double slips : RT- 5364 • Obtuse crossing (CMS) : RT- 5265 • Acute crossings (CMS) : RT- 4867

  11. Special Layouts1 in 8.5 BG 60 Kg Scissors Cross-Over on PSC Sleepers • Crossing assembly : RT-6092 • Acute LH (CMS) : RT- 6093 • Acute RH (CMS) : RT-6096 • Obtuse (CMS) : RT-6099

  12. Special LayoutsDerailing Switches on PSC Sleepers • 1:8.5 BG 52 Kg : RT- 5836 • 1:8.5 BG 60 Kg : RT-6068 • Nominated as LH or RH according to location of tongue rail & not like direction of turnout

  13. Thank You

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