Details: launching of railway's relieving girder of overall length up to 12 to 22 metre after removing track,ballast, excavation earth on properly prepared wooden / cc cribs supports as per the approved scheme of launching, railway drawing and specifications, by contractor's road crane including all tools, plants, machineries, labour, equipments etc. the work includes fixing of track i.e. steel channel sleepers, rails & fittings as per railway specifications and standards on the relieving girder and necessary adjustments in the longitudinal and cross levels including lifting & packing at approaches of girders after insertion of the relieving girder in track to maintain safety of trains on the relieving girder and its approaches. note:- rh girder, sleepers, rails & fittings will be provided by railway. de-launching of railway's 12 to 22 m long reliving girder from bridges and stacking at suitable location as per direction of engineer in charge with contractor's labour, trailer, cranes, derricks,