The sleeping car or sleeper (often wagon-lit) is
a railway passenger car that can accommodate all passengers in beds of one kind or another
, primarily for the purpose of making nighttime travel more comfortable. George Pullman was the American innovator of the sleeper car.
What is the function of sleeper?
(i) The primary function of a sleeper is
to grip the rail to gauge and to distribute the rail loads to ballast with acceptable induced pressure
. (ii) The side functions of a sleeper include the avoidance of both longitudinal and lateral track movement. (iii) It also helps to enhance correct line and level of the rails.
What is meant by sleeper in railway?
Sleeper is
a load distributing component of track structure which is laid transversely to hold the rail
. Sleepers are also called “Ties” because they tie the rails together. Now-a-days, the sleepers used are pre-stressed concrete elements and are commonly known as Pre-Stressed Concrete (PSC) sleepers.
What are the types of sleeper?
- 1-The snorer. Everyone’s probably familiar with the rumble and grumble of snorers. …
- 2-The crawler. …
- 3-The babbler. …
- 4-The midnight snacker. …
- 5-The animal lover. …
- 6-The night owl. …
- 7-The blanket thief. …
- 8-The sleeping beauty.
Why is a railway sleeper called a sleeper?
This would be from the construction of wood framed houses,, barns etc where there was no brick or stone foundation but
a large/thick timber was laid flat on the ground (presumably one for each of four sides) and the vertical frame members then stood on
that. This “laid down” timber was called a “sleeper”.
Which railway sleeper is best?
Timber that has been treated with preservative is the best choice in most cases –
UC3 treated timber
is best for use out of the ground, while UC4 treated is best for in-ground. Another type of timber available is green oak, which does not need treating as they are long-lasting naturally.
How much weight can a railway sleeper hold?
A concrete sleeper can weighs up to
320 kg (700 lbs)
compared with a wooden sleeper which weighs about 100 kg or 225 lbs. The spacing of concrete sleepers is about 25% greater than wooden sleepers.
What is the main disadvantage of steel sleeper?
Disadvantages of Steel Sleepers
It is liable to corrosion.
Cracks at rail seats develop during the service.
Which is cast iron sleeper?
The sleeper is
a combination of pot, plate, and box sleepers
. It consists of two triangular inverted pots on either side of the rail seat, a central plate with a projected keel, and a box on top of the plate. The two CI plates are connected by a tie bar with the help of four cotters.
What are the requirements of sleepers?
A good sleeper should meet the following requirements: (i)
It should be economical
. (ii) It should maintain correct gauge and alignment. (iii) It should be easy to lifting, packing removal and replacement.
Which Sleeper Has Highest scrap value?
Wooden sleepers
have the maximum creep and it is least in case of concrete sleepers.
What is scrap value of sleeper?
Cast Iron Sleepers Scrap at
Rs 37000/metric ton
| Cast Iron Scraps | ID: 2485690888.
What are sleepers Class 9?
Sleepers are
wooden boxes put across railway tracks which hold the tracks in position
. They hold the iron tracks on their positions when trains move over them. The sleepers are made of beech and oak. The trees are cut in winter and are sorted as well as stored for around six to twelve months in an open area.
Why are railroad ties illegal?
A: The reason the EPA has made illegal the use of treated railroad ties in vegetable gardens is
the fact that they are treated with coal tar creosote
, a pesticide registered both with the EPA and the state of Oregon.
Why do train tracks have rocks?
The crushed stones are what is known as ballast. Their purpose is
to hold the wooden cross ties in place
, which in turn hold the rails in place. … The answer is to start with the bare ground, and then build up a foundation to raise the track high enough so it won’t get flooded.
Why are railroad ties soaked in creosote?
Railroad ties are thick, durable, cheap, recycled wood that forms long-lasting barriers for beds, paths, and retaining walls. … The wood is
preserved by soaking
it in creosote, which is composed of over 300 chemicals, many of them toxic and persistent in soil. Exposure to creosote has been shown to cause cancer.
