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If you want to increase the lifting beam, you can only plant the steel reinforcement on the ring beam at the back, or add a steel column under the lifting beam.
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It can be made into a light steel structure.
I hope to change the design, but if you want to do it, you need to use cement above C40, and increase the height-width ratio of the beam
The cantilever beam extends into the corresponding load-bearing wall at least twice the length of the cantilever beam, so as to ensure the load-bearing capacity of the structure and the structural safety.
Of course there will be problems. After a long time, it will rust, the rust is loose, it will rust faster and faster, a vicious circle, environmental humidity, >>>More
At least half, the depth also gets 1200
The concrete overhead beam stretches out at the end of the transverse load-bearing wall, and the end of the adjacent two adjacent overhead beams is provided with a covering beam, and the ring beam of the eaves wall is poured between the enclosed ranges, so that the elevation of the board surface is slightly lower than the floor surface 60mm; At the same time, the required balcony railings are set on the overhead beams and covered beams. It's such a simple structure.