What are assembly order on segmental assembly bridge building crane?

HZQ57/80 bridge building crane is disassembled as transporting. After being carried to the worksite, install them with cranes.

bridge building crane

Below are assembly order on segmental assembly bridge building crane:

measure and position—lay rail track—install two main girders in a balanced and symmetrical position—assemble front connection frame and rear connection frame—install middle support leg—install front support leg, middle support leg and gantry crane support legs—lift and install overhead crane—hydraulic and electrical system—switch on the power