What is formation level in railway?
Formation. The formation (also called subgrade level) is the ground surface prepared to support the track surface. It is the top layer of the extended subsoil. A subgrade protection layer applied to the formation is an integral part of track construction today.
What is packing in railway engineering?
(f) Packing of sleepers (i) The aim of packing is to have each sleeper firmly and uniformly packed to ensure that the rails are at their correct relative levels i.e., level on the straight track and to the required cant on curves and that no sleeper has any void between it and its bed.
What are the 4 main parts of a railway?
Components of railway track are rail section, sleepers, ballast, rail fastenings and subgrade and embankments. I will walk you through each of them in detail.
Why ballast is used in railway track?
It is used to bear the load from the railroad ties, to facilitate drainage of water, and also to keep down vegetation that might interfere with the track structure. Ballast also holds the track in place as the trains roll over it. The term “ballast” comes from a nautical term for the stones used to stabilize a ship.
What is dog Spike in railway?
Dog Spike. A dog spike, also called cut track spike, is often used to fasten T-shaped railway track to wooden sleepers, to secure a rail and tie plate to the ties in track, which has a pointed penetrating head with square shank, and the underside of the spike head is sloped to compromise the top of the rail base.
Which gauge is used in Indian railway?
There are mainly four types of railway gauge used in India, which are: Broad gauge, Narrow gauge, Standard gauge (for Delhi Metro), and Meter Gauge. Broad Gauge: A broad-gauge is also known as a wide gauge or large line. The distance between the two tracks in these railway gauges is 5 ft 6 in (1676 mm).
What is scissors packing in railway?
Packing of sleepers The sleepers are then packed by applying the scissors packing method. Four men tackle one sleeper simultaneously, two at each rail. The ballast under the sleeper bed is properly packed by the men who stand back to back and work their beaters diagonally by lifting them up to chest level.
Is RRB JE easy?
RRB JE Preparation 2021: For General Awareness It is an easy section provided you read newspapers and magazines regularly and are aware of what is happening. Most of the candidates ignore this section because of this reason. Go through the tips mentioned below to prepare for this section: Watch news daily.
What is the syllabus of RRB je?
RRB JE CBT Stage – I Syllabus
| RRB JE Syllabus – CBT 1st Stage | |
|---|---|
| Mathematics | General Intelligence and Reasoning |
| Algebra Geometry | Data Interpretation and Sufficiency |
| Profit and Loss | Venn Diagram |
| Simple and Compound Interest | Syllogism |