These structures includes Gantries and Equipment Support Structures.
Gantry structures are mainly used for guiding the power conductor from last tower near substation to the electrical equipments in a substation. This structure consist of a number of columns and Girder beams, which depend on number of circuits of the line. Gantries are also used for line crossing.
Power conductors of one line can be underpassed with the help of required number of gantries. Equipment Support Structures are columns, supporting electric equipments in a substation. Depending upon the site and client's requirement, the Gantry and Equipment support structures can be mounted on substation building also.