Structural body unit

A unit of structures comprising:

• two or more structures each having a top wall, a bottom wall, and peripheral walls, being configured in a transportable manner, and having respective spaces provided therein;
• and
• a joint case element which is disposed between adjacent ones of the structures to couple the adjacent ones of the structures, wherein
• the joint case element includes:
• a case element body having peripheral walls and being connected to one of the peripheral walls of one of the structures;
• an opening formed in one of the peripheral walls of the case element body and having a predetermined size;
• and
• a hood member which provides cover for a connection of the joint case element with the one of the structures,
• the unit of structures is configured to allow a person to move between the spaces of the adjacent ones of the structures through the opening,
• at least one of the structures has power generation equipment which is equipped thereto and generates power for electrical devices provided for the unit of structures, and
• the power generation equipment comprising at least one of a wind turbine generator, a photovoltaic generator, or a hydroelectric generator.