The steel rail, also know as rail track, railroad rail, is used to guide the train wheels far forwarding, by withstanding the enormous stress by the wheel when a train passes by, and transferring to the tie sleepers as well. Answer: Option 3. The wood used may be like teak, sal etc or it may be coniferous like pine. Have a useful life of 20-25 years. Plate sleepers consist of rectangular plates of size about 2′ – 10′ x 1′ – 0″. Most of the tracks lays with the metal sleepers. Various types of fastening have been used over the years. Railway Fasteners used for concrete railway sleepers The railway fasteners are used to connect steel rails and concrete railway sleepers on concrete sleeper railway track. ARSC Steel Sleepers are manufactured in an ISO9001 accredited facility to the Australian Standard AS1085.17. Fishplatesare used for joining rails. Intrastate and Light Weight Lines steel sleepers may be used in curves of less than 240 m radius but a reduced total life would be expected. 3) Sleepers to bridge girders,etc. Spring steel clip used for the fastening of rail with the sleepers is produced using EN-48 steel. Fish bolts are used to connect fish plates to the rails at rail joints. 68. A joint sleeper of cast iron known as rail Free Duplex sleepers has been use as a rail joints in conjunction with it. Rails are fixed on steel sleepers A. by bearing plates B. by dog spikes C. by keys in lugs or jaws D. none of these. The amount of sleepers that set per kilometer of the rail line is decided by the railway volume and running speed. It consists of slabs of stones or pieces of woods placed parallel to and underneath the rails. 2. Ultrasonic Machining Process, Working Principles & Advantages, Electrical Discharge Machine (EDM) Types, Advantages and disadvantages, Machining Operation and Types of Machining Tools, Milling Machine Definition, Process & Types, Railway Sleepers Definition, Characteristics, Treatment, What is Rails, Definition & Types of Rails. Main disadvantage of steel sleepers, is : A. rectangular is cross section throughout, C. 6 mm thick steel sheets with ends bent down. Sleepers are transverse members of the track placed below the rails to support and fix them in position. Lighter than concrete, steel railway sleepers are a popular choice for a variety of different uses. Our steel sleepers are the most advanced in the world providing lower installation and maintenance costs and more efficient logistics. They are not suitable for all types of ballast which is provided as bed for sleepers. If derailment is happened, they damaged very badly and not suitable for re using. Rail to steel through sleeper -- Loose Jaws, Keys & Liners. Hook bolts are used for fixing timber sleepers to bridge girders. D. 6 mm thick steel sheets with ends bent up. Timber (wooden) sleeper, it is a kind of wooden sleeper. Generally laid perpendicular to the steel rails, railway sleepers could transfer loads to the track ballast and subgrade, hold the rails vertical and keep them spaced to the correct gauge. Minimum composite sleeper index for wooden sleepers used in cross-overs, is, 68. Hence they are universally used. The pot is oval in shape with larger diameter 2′-0″ and smaller diameter 1′-8″ is preferred. The channel sleepers are fixed to the girders of bridges. COPYRIGHT © 2021 by grabSTUDY. They link the rails endwise and fix the rails either on chairs fixed to sleepers or directly on to the sleepers. It is a support for the steel rails. Photo about Steel rail fixed to a concrete sleeper. Special steel sleepers are available for use at joints on lines with 60 lb/yd (30 kg/m) rail. Intrastate and Light Weight Lines may also have a small proportion of 22t axle load traffic @ 40km/h. Advantages of Wooden Sleepers They are cheap and easy to manufacture They are easy to handle without damage They are more suitable for all types of ballast categories. The rail shall provide smooth and continuous rolling surface with least resistance. They are in the form of steel trough inverted on which rails are fixed directly by keys or nuts and bolts and used along sufficient length of tracks. View all comments. The load transfers from rails to sleeper, sleeper to ballast, ballast to subgrade below. Timber sleeper. • Rails are fixed to sleepers by different types of fixtures and fastenings (chairs, bearing plates, fish plates, fish bolts, spikes etc.). Advantages of Steel Sleepers. Photo about Steel rail fixed to a concrete sleeper. Steel Sleepers in the Rail Industry – they are still made, and have quite a history. These are not suitable for all types of rail … Sleepers are members generally laid transverse to the rails. Steel can be effected by chemicals easily. On sleepers, the rails are supported and fixed, to transfer the loads. They may be a twin block sleepers joined by an angle iron. To prevent creep in rails, the steel sleepers are fixed with rails by clips, bolts and A. one key B. two keys C. three keys D. four keys. In general, the timber sleepers lay on the ballasts, and the steel rails are fixed on these railway timber sleepers so that ensuring the safety of the train. Type of sleepers in Railway. They are much useful for heavy loads and high speeds, They have long life of 10-12 years depending upon the climate, condition, rain, intensity, nature of traffic, quality of wood etc, Good insulators and hence good for track circuited railway tracks, Suitable for salty regions and coastal areas, They are not badly damaged in case of derailment, Liable to be attacked by vermin so, they must be properly treated before use, Free from decay and are not attacked by vermins, Connection between rail and sleeper is stronger, Connection between rail and sleeper is simple, More attention is not required after laying, Liable to corrosion by moisture and should not because in salty regions, Good insulators and hence cannot be used in track circuited regions, Cannot be used for all sections of rails and gauges, Should not be laid with any other types of ballast except store, Way gauge is obtained if the keys are over driven, Having good shock absorber as there is not cushion between rail foot and ballast, High scrape value as they can be remolded, They are prone to corrosion and cannot be used in salty formations and coastal areas, Not suitable for track circuited portions of railways, Difficult to maintain the gauge as the two pots are independent, Require a large number of fastening materials, Difficult to handle and may be easily damaged, They can be produced on large quantities locally by installing a plant, Heavier than all other types thus giving better lateral stability to the track, Good insulators and thus suitable for use in track circuited lines, Free from attacks of vermin and decay, suitable for all types of soils, Initial cost is high but proves to be economical in long run, Effectively and strongly hold the track to gauge, Difficult to be manufactured in different sizes thus cannot be used in bridges and crossing, Can be damaged easily while loading and unloading. Alternatively, timber sleepers may continue to be used at joints. All LIBERTY Primary Steel sleeper systems are proudly Australian made.. Trak-Lok ® sleepers tie rails together maintaining gauge and rail position while resisting lateral and longitudinal movement of the rail. Running of the train is not smooth when this type of sleepers is used. Reinforcement concrete sleeper. It is a support for the steel rails. How to Fix Railway Sleepers? A rail fastening system is a means of fixing rails to railroad ties or sleepers. Ballasted Rail Track For ballasted track, the railroad sleeper is fixed … Rail Profile. All Rights Reserved, 64. Steel Sleeper Wide Range Steel Sleepers from AGICO. The salient features of timber/wooden sleepers with advantages and disadvantages. Generally, the timber sleepers lay on the ballasts, and the steel rails are fixed on these railway timber sleepers so that ensuring the safety of the train. Steel sleepers. Discuss in Forum . It exerts a toe load of 710 kg for a nominal deflection of 11.4 mm. They consist of two pots or plates with rib and connected by wrought iron tie bar of section of about 2″ ½”    each pot or plate is placed below each rail. The relative advantages and disadvantages are given below. According to their relations between steel rails, tie plates and wooden sleepers, they can be divided into three types: the separated type and the composite type. For the railway system, the railroad timber sleepers are an infrastructure. The different types of bolts used in Indian Railways are : 1. The rails, if doublehead or bullhead type, are secured by wooden keys into cast-iron chairs which are fastened to the wooden sleepers with spikes (pre mid-1960s) or screws (see photo below). They remove the drawbacks of longitudinal sleepers i.e. Sturdier than wood and less expensive than pre-stressed concrete, it seemed logical that steel could prove a boon to companies looking to undertake an economical track upgrade. The terms rail anchors, tie plates, chairs and track fasteners are used to refer to parts or all of a rail fastening system. Gauge widening for curves less than 200 m radius is not required for steel sleepers. Types of Railway Sleepers:- Sleepers are the components of the railway track on which the rails are supported and fixed to transfer and fixed to transfer to loads to the ballast and subgrade. They are popularly known as dog bolts. Fish bolts. They are in the form of steel trough inverted on which rails are fixed directly by keys or nuts and bolts and used along sufficient length of tracks. Image of traffic, industrial, design - 119510750 1 by bearing plates; 2 by dog spikes; 3 by keys in lugs or jaws; 4 none of these. hold the rails to correct gauge. hold the rails in proper level or transverse tilt. It may be a single block pre-stressed type. Rails are fixed to sleepers by different types of fixtures and fastenings The from CIVIL ENGI 4411 at Sri Lanka Institute of Information Technology Steel rail sleepers are often seen as a middle ground between wood and concrete. Subscribe. Therefore, the more rail sleeper, the higher strength of the rail tracks. Cast iron sleeper. Inline Feedbacks. Steel sleepers are highly economical as maintenance costs are significantly lower than concrete, and old ballast can remain in place reducing new ballast requirements. Elements of a baseplate based rail fastening system Screw for fixing plate to sleeper Elastomeric pad supporting rail Tension washer Rail … Depending upon the material, the transverse sleepers may be classified as: The timber sleepers nearly fulfilled all the requirements of ideal sleepers and hence they are universally used. 1. Overview Trak-Lok® Steel Sleeper Systems incorporate the Trak-Lok ® resilient fastening system that has been developed specifically for use with steel sleepers. Rag bolts. Steel ties are common on secondary lines in the UK; plastic composite ties … 2. Wooden sleepers are the ideal type of sleeper. Free from decay and are not attacked by vermins; Connection between rail and sleeper is stronger; Connection between rail and sleeper is simple They holds the rail strongly and connecting rail to the sleeper is also simple. Timber sleeper Steel sleepers can be installed with other sleeper types to prolong track life, including turnouts. Most of us are familiar with wooden, and in more recent times, concrete railway sleepers (or railroad ties as they are called in the US). Question: Rails are fixed on steel sleepers. To maintain correct gauge of the track, cross pieces are provided at regular intervals. Wooden, cast iron, steel or RCC members which are laid transverse to the track alignment to support the rails and to transfer the load from the rails to the under line blast are called sleepers. Transverse sleepers introduced in 1835 and since then they are universally used. Sleepers. Channel Steel Sleeper/Bridge Sleepers are used in the tracks running over bridges where ballast cannot be used to stabilize the track. A railroad tie, crosstie, railway tie or railway sleeper is a rectangular support for the rails in railroad tracks. Flat-bottom rails are fastened to the sleepers with rail spikes or with screws and baseplates for wooden sleepers, or Pandrol or other patent clips for sleepers of all materials (including steel and concrete). Steel sleepers can be manually or machine laid. The elastic rail clips can be fixed on wooden, steel, cast iron, and concrete sleepers with the help of a base plate and some other ancillary fittings. Railroad steel rail and railway sleeper are commonly used on the railway lines, belongs to the key structure of railway track. 4. Steel Sleepers manufactured by AGICO has wide range of application, from metre gauge railways to mainline and heavy haul freight routes, AGICO can produce steel sleepers according to UIC 865 and BS 500-2000, steel material and steel sleeper length can be customized according to customer requirements.. UIC-865 Steel Sleeper … Notify of {} [+] {} [+] 0 Comments . View Answer. Report. Steel sleepers requires high maintenance. Our reclaimed steel rail sleepers were originally used on lower speed lines, mainly where the ballast doesn’t need to be disturbed. Railroad ties are traditionally made of wood, but prestressed concrete is now also widely used, especially in Europe and Asia. A railway sleeper or called rail tie is a rectangular support for the rails in railroad tracks. the transverse sleepers are economical, silent in operation and running of the train over these sleepers is smooth. Our wide range of steel sleepers is designed to cater for all types of application, from metre gauge railways to … They were first of all used in France round about in 1914 but are common since 1950. Reduced maintenance costs as a result of greater lateral stability. Drawbacks . Steel sleeper. On the other hands, the timber sleepers hold the steel tracks at … The following types of Steel Sleepers are as follows, Key Type We see them when shivering on the platform edge in morning peak. Prestressed cement concrete sleeper. Rail to wooden sleeper --- Dog Spike, Screw spike, fittings Bearing plate & Fang bolts. Image of close, track, train - 119510748 Functions of sleepers. Depending upon the position in a railway track, railway sleepers may be classified as: These are the early form of sleepers which are not commonly used nowadays. 69. 3. At present this type of sleepers are discarded mainly because of the following reasons. The utility of timber sleepers has not diminished due to the passage of time. We manufacture and supply a wide range of shallow depth (165mm deep) and full depth (200mm deep) hollow steel sleepers for the conveyance of cables and services under the track. The low profile design is easy to handle, stack and transport by road or rail. R.C.C and pre-stressed concrete sleepers are now replacing all other types of sleepers except to some special circumstances such as crossing bridges etc here timber sleepers are used. Some types of steel sleepers we have currently are: BS500 steel sleeper: BS75A, BS75R, BS80A, BS90A, BS100A, BS113A UIC865 Steel Sleeper: UIC54, UIC60 Bosheng’s steel sleepers are manufactured in accordance with the specific technical requirements of customers. To prevent creep in rails, the steel sleepers are fixed with rails by clips, bolts and. Hook bolts. • Sleepers hold the rails in proper position with respect to their proper tilt, gauge and level and transmit the load from rails to the ballast. The steel sleepers are cut to length, the ends is pressed in a forging die. Reduced transport costs, due to lighter weight and stackable design. Generally laid perpendicular to the rails, ties transfer loads to the track ballast and subgrade, hold the rails upright and keep them spaced to the correct gauge. Steel Sleepers. We fabricate these sleepers using channels of suitable sections and weld them together to obtain the required strength. Soil Mechanics And Foundation Engineering, Vector images is Designed by pch.vector / Freepik. Types Rail to Rail Joining --- Fish plates, bolts, nuts. Workspace. Our range of sleepers accommodates vertical and inclined vignole rails and 95RBH bullhead rails. From building and art projects to their inherent scrap value, our steel sleepers are a great choice. 2. Noise created by the track is considerable. The train runs rapidly along two railway sleepers, the railway sleep is responsible for carrying the weight of the train and ensuring the smooth running of the train. These sleepers use to prevent the cantilever action between the two supports of the sleeper joints. Fang bolts. Table 1 Rails to be used are canted 1 in 20 to centre of track. Correct gauge of the train over these sleepers use to prevent creep in,... Operation and running speed available for use at joints on lines with lb/yd... Crosstie, railway tie or railway sleeper is a rectangular support for the rails in tracks. 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