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It's the same as my house, I made a 600-thick girder in the middle, and I can't forget it without a beam.
The empty span of 8 meters in the living room of the rural building house is not hit by the beam, and it must be looked at, and it is very dangerous not to play.
Summary. Your span is already relatively large, and if there is no wall below, it is better to have beams, and if there is a wall, it is not so large. >>>More
You can add it, depending on how many meters you have a span.
There is no regulation for this, it depends on the design of your house, there are single doors, mother and son doors, and double doors. There are many double openings in rural areas, and there are many single-door doors and mother-in-law doors in villas. >>>More
The size of the beam is one thing, the key is the size of the reinforcement, please consult the relevant technical personnel in person or consult the construction committee.