The story is 4 meters high. The floor height of the dining room includes clear height (the height from the finished ceiling surface to the lower surface of the structural floor) and beam height (the space required for air conditioning and spraying is 0.8m, the beam height is not less than 0.8m according to the column spacing, and the floor is 0. 1m). For example, the clear height of the Chinese restaurant and lecture hall should not be less than 3.2 meters. Without considering the space required for air conditioning and spraying, the beam height should not be less than 0.8 meters according to the column spacing, so the story height is 4 meters.