The balcony is 2 5 meters outside, the beam width is 0 3 meters, the beam height is 0 55, and the be

To answer that the height of the beam is too small, there are some problems in this design, it is recommended to increase the beam height and width ratio, the main reinforcement of the cast-in-place cantilever beam is 25mm rebar, and the negative reinforcement is not less than 16mm rebar, the cantilever (extension) is generally not more than 150 cm, the beam height (including the height of the plane part) is 40 cm, and the bottom width is equal to the thickness of the wall; The arc part is made of 16mm rebar, the top and bottom are the same, the height is the same as the cantilever beam, and the width of its bottom surface is 15 16 cm; The rear body of the cantilever beam is connected with the ring beam, and the total length of the cantilever beam part is about 4 meters; The reinforcing bars of the flat part of the balcony are arranged in a criss-cross manner, and are inserted into the cantilever beam, the arc beam and the ring beam inside. If it is an overall cast-in-place floor, the reinforcement is also better to consider the overall layout.

The height of the beam is too small, it is recommended to increase the beam height.