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Anonymous users2024-01-24Hey, hey, he was reluctant to pay the design fee, so he came to ask when there was a problem. How tall are the dark beams? Is it as thick as a plate? How thick is the balcony slab and what is the reinforcement?
40 45cm, steel bars 25mm or more, 4 or 5, auxiliary bars, 16mm 3 to 5.
Summary. Generally, take the span of 1 6 1 8, when the cantilever length is greater than 1500 (unless otherwise specified in the construction unit mm), need to add bent reinforcement. The ratio of the length of the embedded masonry of the pick beam to the length of the pick should be greater than that, and when there is no masonry on the pick beam, the ratio should be greater than 2. >>>More
There is no clear limit, and if you pick out more, you will have more steel bars and a large plate thickness. It is recommended not to exceed one meter. The reinforcement has to be calculated concretely, and it is impossible to talk nonsense.
200x400 (240x450) HRB335 20 is enough! 8 stirrups of 15 (beam end encryption three stirrups) one! Remember to bend and stiffen! The steel bar of the pick beam is anchored into the cast-in-place beam and poured together.
You are too bold, there are great safety risks in picking the board like this, so dispel this idea as soon as possible, and dare not take the liberty to provide you with reinforcement.