Railway terminology

Railway engineering
The branch of civil engineering which deals with the design , construction and maintenance of the railway tracks for safe and efficient movements of train is called Railway engineering.
In this, some railway terminology and their types are discussed.
Railway terminology – (1)Ballast (2)Rails (3)Sleepers (4)Points of crossing
(1) Ballast - Ballast in railroad terminology is durable granular material placed between the crosstie and the sub ballast to hold the track in line and grade.
(2) Rails - The rolled steel sections laid end to end in two parallel lines over sleepers to form a railway track are known as rails.
(3) Sleepers - Sleepers are the transverse ties that are laid to support the rails. They transmit wheel load from the rails to ballast.
(4) Crossing – A crossing is a device which provides two flange ways through which the wheels of the flanges will move, when two rails intersect each other at right angle.

1. G. H. Raisoni College of Engineering, Nagpur Department of First Year Engineering SUBJECT:- Basic of Transportation And Its TOPIC:- Railway Terminology

2. Railway engineering The branch of civil engineering which deals with the design , construction and maintenance of the railway tracks for safe and efficient movements of train is called Railway engineering .

3. Railway terminology Ballast Rails Sleepers Points of crossing

4. ballast Ballast in railroad terminology is durable granular material placed between the crosstie and the sub ballast to hold the track in line and grade. The primary purposes of ballast are: To provide structural support for the track, holding it in good line and surface To distribute the load evenly to the ballast and subgrade and thus help to provide stability Provide for drainage

5. Types of ballast Broken stone Gravel or river pebbles or shingle Ashes or cinders Sand Mooram Kankar Brick ballast Blast furnace slag Selected earth

6. Ballast size For wooden sleepers = 5.1 cm For steel sleepers = 3.8 cm For under switches & crossings = 2.54 cm

7. TYPES OF RAILS DOUBLE HEADED RAILS (D.H. RAIL) FLAT FOOTED RAILS (EE RAIL) BULL HEADED RAILS (B.H. RAIL) RAILS The rolled steel sections laid end to end in two parallel lines over sleepers to form a railway track are known as rails .

8. 1. DOUBLE HEADED RAIL THE RAILS HAVING THEIR FOOT OF THE SAME DIMENSIOINS ARE KNOWN AS DOUBLE HEADED RAIL (D.H).

9. 2. FLAT FOOTED RAILS THE RAILS SECTION HAVING THEIR FOOT ROLLED TO A FLAT ARE KNOWN AS FLAT FOOTED RAILS.

10. 2. BULL HEADED RAILS THE RAILS SECTION HAVING THEIR HEAD OF MORE DIMENSION THEN THAT OF THEIR FOOT ARE KNOWN AS BULL HEADED RAILS (B.H.).

11. RAIL JOINTS FISH PLATE JOINT FASTENERS JOINT SLIDE CHAIRS JOINT JUNCTION PLATE JOINT BEARING PLATE JOINT CHAIRS

12. FISH PLATE FASTEST JOINT SLIDE CHAIR JOINT JUNCTION PLATE JOINT

13. BEARING PLATE CHAIRS

14. SLEEPERS SLEEPERS ARE THE TRANSVERSE TIES THAT ARE LAID TO SUPPORT THE RAILS. THEY TRANSMIT WHEEL LOAD FROM THE RAILS TO THE BALLAST.

15. CLASSIFICATION OF SLEEPERS WOODEN SLEEPER METAL SLEEPER CONCRETE SLEEPER CAST IRON SLEEPER STEEL SLEEPER REINFORCED CONCRETE SLEEPER (R.C.C) PRESTRESSED CONCRETE SLEEPER

16. WOODEN SLEEPER METAL SLEEPER CONCRETE SLEEPER

17. crossing A CRossing is a device which provides two flange ways through which the wheels of the flanges will move, when two rails intersect each other at right angle.

18. ACUTE ANGLE CROSSING DIAMOND CROSSING SQUARE CROSSING

19. Thank you