Portal Cranes are commonly used in open area. Portal cranes are perfectly designed to handle higher capacity and and suitable for big bridge spans. Portal cranes are moves on rails installed on the ground. Which consists of carrier legs which mounted to crane bridge. There for there is no need for any building contsruction. Portal or Semi Portal cranes are commonly used for heavy fabrication, or in some type of outdoor stock areas, hydroelectric power plants, dams, marble quarry, stock yards, harbours etc. sectors.