How to design a 3 meter cantilevered balcony slab

Updated on Balcony 2024-02-27
1 answers
  1. Anonymous users2024-01-23

    Landlord, how do you calculate (I don't see the weight of the plate) is not theoretical. There is only one suggestion for the scenario:

    After arranging the two sides of the pick plate and the outer edge of the flower pond into a lift beam system combined with the side wall beams, the board is turned into a plate supported on all sides to reduce the thickness of the board. The structure is reasonable and the cross-section is comfortable. I don't know if the landlord has checked the anti-overturning and anti-torsion of the wall side beam.

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1 answers2024-02-27

[Structural Engineer].

In the structural design, balconies cannot be entered as cantilevered slabs. It should be composed of two cantilever beams and one edge banding beam. The board is still an ordinary board. >>>More

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It has nothing to do with the length, it is the tendon in the width direction! One end extends into the inner floor slab of the beam 500 anchorage, the anchor end is 90 degrees hooked, the balcony outside 180 degrees hook, 16 threaded steel bars 150 are evenly distributed at intervals, the distribution of steel bars in the length direction is not subject to any force, 12 reinforcing bars are evenly distributed at intervals, and the reinforcing bars are arranged near the upper surface of the balcony slab, the thickness of the protective layer is 25, and the rebar grade is HRB335.

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The balcony is an extension of the cantilevered slab, picked out of the meter length of 12 meters, reinforced round 12, grade 3 steel @ 150, plate thickness 150 120C25 concrete, surrounded by 120 brick walls, 700 meters high, and the upper side is closed with aluminum alloy windows. Bearable;

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1. There is no need for double-layer two-way configuration of steel bars, and the thickness of 120mm plate only needs to be matched with the upper stressed steel bar. >>>More

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Yes. But it is better with a tendon of 14 rounds. The key is to pick the beam with large round ribs.