Shubham Bhargava's Blogs

ERECTION OF SUPERSTRUCTURE ●       Erection is done during night because road traffic is less and space required is available. ●       Care should be taken that work is done at least 6 m away from of electric wires and poles. ●       There should not be any traffic or anything prone to damage within swing area. ●       Cranes are used to lift and place the structure. One crane is used for erecting pier cap and two cranes for erecting U Girder ●       Location of crane is decided upon following factors : ○       Size and weight of superstructure. ○       Area available free from utilities. ○       Boom length and boom angle as decided by engineer. ○       Swing Area. ○       Location of trailer truck. ●   ...

                                          Girder ●       Girder is the superstructure of viaduct on which the rail tracks are laid and train runs. ●       It rests on the piers, one at each end. ●       Since we have two tracks, each pier supports four U girders (two on each side) ●       U girder weighs around 140 Tons and is 25 m long. There are 3 bed in the Casting Yard for both U girders and pier cap – • Caging Bed • Casting Bed • Curing Bed Each Bed is Capable of Making four Girders simultaneously in a row. Methodology : 1.     Four Cages are fixed at the Cage Bed. 2.     Cleaning And Oiling of Mould/Shuttering of Casting bed is done. 3.     Lifting Of Cage and Shifting to Casting Bed is done. 4. ...