Wooden Sleepers These sleepers are regarded t be the best as they satisfy all the requirements of good sleepers and are the only sleepers suitable for track circuiting. 79. Answer: Option D. Explanation: No answer description available for this question. Yes: B. Functions of sleepers. Environment and end life wooden sleepers . The useful life of a sleeper depends upon its resistance to fungi, insects, and mechanical pressure. The space between two adjacent sleepers determines the effective span of the rail over the sleepers. Fang bolts (Fig. Workspace. The most widely used impregnating material is creosote, but solutions of copper or zinc salts are also used. 3 Fang Bolts . The load transfers from rails to sleeper, sleeper to ballast, ballast to subgrade below. hold the rails in proper level or transverse tilt. The standard sizes of wooden sleepers for different gauges are as follows: For B.G. A. quality of its timber: B. ability to resist decay: C. resistance to weathering: D. all the above. 10.5) are employed under the switches for fastening slide chairs to the sleepers. The life of a wooden sleeper depends upon. Sleepers – Spacing &Density….. The number of sleepers in a track is indicated by the number per rail length. As a rule, hardwood oak sleepers tend to last the longest naturally with an expected lifespan of around 100 years. Protection against decay is obtained by impregnating with chemicals. Let us discuss. How long wooden sleepers last depends largely on what species of wood used and how they are treated, as well as the environmental conditions that they are subjected to throughout their life. Bulk cotton for clothing, lumber products for the construction of homes, fruits, vegetables and grain, as well as autos and their parts, travel by rail. Timbers commonly used in India for sleepers are sal, Teak, Deodar and chair wood. Take the Quiz and improve your overall Engineering. These are also used for fixing assemblies of switches onto wooden sleepers. It Depends on carry the axle load & lateral thrust. hold the rails to correct gauge. Upon railway reconstruction, wooden railway sleepers become the waste, which must be handled by … No View Answer Workspace Report Discuss in Forum. The life of wooden sleepers depends upon their ability to resist wear, attack by white ants and quality of timber used. On sleepers, the rails are supported and fixed, to transfer the loads. The round spike has a round section of a diameter of 18 mm, and its length depends upon the purpose it serves. The life of wooden sleepers depends upon their ability to resist wear, attack by white ants and quality of … – 2740 mm X 250 mm X 130 mm Round spikes have become obsolete now. 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