Disadvantages of Concrete Sleepers
- It is brittle and cracks without warning.
- It cannot be repaired, and required replacement.
- Fittings required are greater in number.
- No scrap value.
Thereof Which sleeper is best in railway? Concrete sleepers have many advantages like longer lifespan, high stability, small maintenance, low damage rate and low scrap rate. They are widely used in high speed railway and the stability is much higher than wood sleepers.
What are the requirements of sleepers? Requirements of an ideal Sleeper
- It should be economical.
- The fitting of the sleepers should be such that they can be easily adjusted during maintenance.
- They should not be too heavy or excessively light in weight.
- They should have long life.
- They should be able to maintain the correct gauge.
Similarly, Do wooden sleepers rot?
Like all wood, sleepers will eventually rot and fade when exposed to the weather. To prevent them falling to bits before their time, you need to use a good wood preserver.
Why concrete sleeper is more economical compared to other types of sleepers?
Concrete sleepers are heavier than all other types hence, gives good stability to the rails. They have long life span so, economically preferable. … Concrete is good insulator so, this type of sleepers are more suitable for circuited tracks.
Which sleeper provides best elasticity? Engineering :: Railway Engineering
| [A]. | Wooden sleeper | Cast iron sleeper |
|---|---|---|
| [C]. | Steel sleeper | R.C.C.sleeper |
Do railway sleepers rot?
Like all wood, sleepers will eventually rot and fade when exposed to the weather. To prevent them falling to bits before their time, you need to use a good wood preserver.
Which sleeper has higher lifetime? Which of the following types of sleepers have the maximum service life? Explanation: Concrete sleepers have the best service life and are being extensively used in Indian railways nowadays. Whereas wooden sleepers have the least service life.
Which is the desirable property of sleepers?
(i) It should be economical. (ii) It should maintain correct gauge and alignment. (iii) It should be easy to lifting, packing removal and replacement. (iv) It should be neither too heavy nor too light.
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.
What are the requirements of a good sleeper and ballast? Following 8 Requirements of the good ballast are:
- It should be hard and tough.
- It should not be brittle and porous.
- It should have sufficient elasticity.
- It should allow easy drainage with minimum leakage.
- It should be wear-resistant and durable.
Can I lay sleepers on soil? Can you lay railway sleepers on soil? Yes you can. If you’re only creating a structure that’s one or two sleepers in height you don’t necessarily need foundations, which means you can lay your railway sleepers onto the soil.
Can you use Postcrete for sleepers?
Fixing Sleepers
Screw-fix a metal log roll pin or wooden stake – one to each end of the sleeper. Dig a 75mm deep trench and use postcrete to provide a base 25 – 30mm deep.
How do you stop sleepers from rotting in the ground?
Wood Preserver
Wood preservative treatments provide garden sleepers with protective properties that help prevent rot, mould and fungal growth, as well as help to form a defence against the elements. It is best to apply a wood preservative before installation of your sleeper, so that you can paint all sides.
Which sleeper has the highest scrap value? Which type of sleeper has the maximum creep? Explanation: Creep can be defined as the forward movement of rails with respect to sleepers. Wooden sleepers have the maximum creep and it is least in case of concrete sleepers.
What are the four types of sleepers? The 4 Types of Sleepers
- Early Risers. Dubbed “larks” by researchers, these individuals prefer getting up and going to sleep early over late nights. …
- Late Risers. …
- High Energetic. …
- Always Tired.
Which type of sleeper is most common at present?
Transverse Sleepers
Transverse sleepers introduced in 1835 and since then they are universally used.
Where of rail is maximum in? Detailed Solution. Wear of rails is always maximum on curves and hence radius of curve is limited to avoid wear.
What should be the broad gauge?
The broad gauge in the Indian Railways is also called wide gauge. Complete answer: The width of the broad gage in Indian Railways is 1.676 metre which means that distance between the two tracks is 1.676 metre. … The broad gauge is the widest of all which is used all over the world.
What is the largest dimension of rail? Largest dimension of a rail is its
- A. height.
- foot width.
- head width.
- any of the above.
How long will sleepers last in the ground?
As a rule, hardwood oak sleepers tend to last the longest naturally with an expected lifespan of around 100 years. An untreated softwood will last for between three and five years if it sits on the ground, whilst treated softwoods can last between 20 and 30 years if they are maintained correctly.
How long will railway sleepers last in soil? Railway sleepers will last for years, with our softwood treated sleepers typically lasting around 8 to 10 years due to the pressurised treatment, and UC4 treatments extending this to 15 years.
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