construction steps of a rail road in pics

Following are the pictures showing just the basic steps of a rail road construction.

In rail road construction the first step is the earth formation.We have to improve the existing ground conditions with suitable improvement methods providing a proper drainage system. This includes the provision of earthen ,RRM,RCC and sub soil drains according to the site conditions.Ground improvement methods such as Geo grids  and boulder fillings should be introduced depending on the site condition.

     1. Preparation of earth formation and drains.

In this project a layer of 200mm thick compacted ABC (Aggregate Base Course)  is used as a ground improvement method in addition to other special ground improvement methods.Formation width is taken as 6.1m for single line BG track.

                   

                   2.  ABC formation.

                                                           
Compacted ABC formation is followed by initial ballasting for a width of 4m to a thickness of  approximately 100mm.                                          

                           

                                                                         

3. Initial Ballasting

leading of  sleepers and rails is the next step.

4.Leading of sleepers and rails

Then Rails are welded using a on track  flash butt welding machine.

5.On track welding

                                                          6. Second ballasting using DMT

7.Tamping

8. Destressing