I have a house. According to Feng Shui, I would like to enlarge the bay to between 4.5 and 5.5 meters to comply with building regulations.

According to the "Residential Building Module Coordination Standard": the following parameters are often used for the bays of residential buildings: 2.1 meters, 2.4 meters, 2.7 meters, 3.0 meters, 3.3 meters, 3.6 meters, 3.9 meters, 4.2 meters . At present, a large number of brick-concrete houses are built in our country, and the residential bays generally do not exceed 3.3 meters. Specifying a smaller bay size can effectively shorten the spatial span of the floor slab and enhance the integrity, stability and earthquake resistance of the residential structure.