SHOTS - RAILWAY ENGINEERING

💥The rail is designated by its weight per unit length. 

💥Carbon and manganese are the 2 important components used in steel for rail. 

💥The length of rail BG and MG is 13m and 12m. 

💥Largest dimension of rail is height. 

💥Largest percentage of material in the rail is in head. 

💥The purpose of providing the fillet in rail section is to avoid stress concentration. 

💥52kg rails are used in broad gauge. 

💥60R rails used in meter gauge. 

💥Ordinary rails are made of high carbon steel. 

💥The main function of fish plate is to join the two rails together. 

💥Number of fish bolts per fish plate is 4. 

💥Gauge is the distance between the running faces of the rail. 

💥Broad gauge provided in main cities. 

💥Meter gauge-undeveloped areas. 

💥Narrow gauge-thinly populated areas. 

💥Tilting –the process of giving inward slope of 1in 20. 

💥Coning – the process of giving the outward slope of 1in 20. 

💥Hogging of rails-the rails are bent down due to loose packing of ballast. 

💥Buckling of rail-the rails get out of their original shape due to insufficient expansion joints. 

💥Creep of rail –flow of rail metal due to the longitudinal movement of rail. 

💥Wear of rail- the flow of rail metal due to heavy load. 

💥The height of the 52kg rail section is 156mm. 

💥19mm is the gap provided between the inside edges of wheel and gauge faces. 

💥Creep is the longitudinal movement of rail. 

💥The maximum degree of curvature for meter gauge is 16*. 

💥Staggered joints are generally provided on curves. 

💥Wooden sleepers are preferred on joints. 

💥Sleeper density in India varies from n+2 to n+7. 

💥Composite sleeper index determines the hardness and strength. 

💥Minimum composite sleeper index preferred by Indian railways is 783. 

💥Dog spikes are used for fixing the rails to the wooden sleepers. 

💥25mm size ballast is used under points and crossings. 

💥3.35m & 2.3m is the width of the ballast section for BG and MG. 

💥2 keys used in CST-9 sleeper. 

💥35mm/sec is the desirable rate of change of cant deficiency of MG. 

💥Normally the limiting value of cant is G/10. 

💥Cant deficiency occur when a vehicle travels speeds higher then equilibrium speed. 

💥The shape of the curve used by Indian railways is transition curve. 

💥One degree curve=1750/R. 

💥Switch angle is the angle between gauge face of the stock rail and tongue rail. 

💥Yellow light signal indicates proceed cautiously. 

💥Crushed head failure caused by loose fish bolts.

💥Wear of rails is maximum in sharp curves. 

💥A treadle bar is used for interlocking points and signal.