Is the structure of the balcony on the 17th floor reasonable as shown in the picture?

Safe.

Balcony overhangs have always been the key part of the structure, and they are also common problems.

For example, when we do structural design, we will artificially amplify the structural design here in addition to the calculation.

In the general direction, if the design drawing of the landlord is a regular drawing, then it can be basically determined that there is no problem.

However, if the construction unit does it itself or the property makes it, the landlord needs to be careful.

Specifically, the data listed by the landlord is relatively easy to achieve, generally from the main structure to pick out two beams as the support of the balcony, the landlord can lie on the railing and look down, it is estimated that you can see these 2 beams at both ends of the balcony, if you see, then there is no problem.

If you can't see it, then it is likely to be directly cantilevered out of the cast-in-place slab of the floor, but if you want to pick more than 2 meters, I don't dare to talk nonsense here, and the landlord has to provide more detailed data calculations.

There's a beam! How to set up columns on the balcony on the 17th floor.

This is very normal, and I often see that as long as it is a drawing from the design institute, then it must be calculated, so it is safe.

Cantilevered balconies, there must be beams. You say there are no columns, which is very likely, is it that the beams are supported on the shear wall, you can't see it?

The 4m wide exterior wall with large door and window openings is of course not a shear wall, but the two longitudinal walls are likely to be shear walls. Let's take a closer look.