A basic hallway, it has a circular cross-section, but a flat floor. A normal hallway usually has a 15' Diameter. The floor has carpet on it, and the walls can be painted or left bare. Along the center of the ceiling runs a strip of lighting, illuminating the entire hallway. Doors are usually set back into the wall, and open into their rooms.
The odd shape of the Origin Industries hallways is meant to be able to hold pressure in the event of a hull breach, making travel between rooms possible even in such an event.