Abstract: A turbine pedestal for supporting turbines and a generator installed in a generating plant is composed of a frame split into segments formed of concrete reinforcing steel platen and reinforced concrete as its main components. The turbine pedestal includes a deck of a concrete structure open only at the top and having reinforcements in addition to the platen arranged compactly in the vicinity of the top of the concrete as in a structure of the prior art, but less than the prior art in the vicinity of the sides and bottom due to the reinforcing affect of the platen. The segments of the frame formed of steel are prefabricated in the plant and have a shape and weight suitable for transportation to the site of construction. The segments of the frame are firmly connected together as by welding or interconnected through a concrete connection structure having compactly arranged reinforcements.