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Can the balcony's counterweight wall be removed?
Since the upper part of the balcony is a “counterweight can wall,†the past design of the building structure should not be dismantled. The balcony of a multi-storey brick-concrete structure is usually a prefabricated balcony. During installation, the steel bars reserved for the prefabricated balcony boards are fixed to the concrete ring beams. Relying on the weight of the upper brick wall, it plays a part of the weight. That part of the brick wall is commonly known as the "weight wall." The counterweight wall cannot be dismantled, it is not dropped immediately after the balcony board is demolished. The problem is that after the demolition, the load-bearing capacity of the balcony is weakened, and its stability is reduced. When unexpected factors such as small-scale earthquakes come, others The same balcony in the home is safe and it is very likely that problems will occur if you remove the balcony with the weighted concrete walls. Therefore, "weight wall" still do not remove. Nowadays, residential buildings are mostly made of cast-in-place reinforced concrete slabs, and the plates and rebars extend out of the walls to form a “cantilevered†balcony. Therefore, the balcony panels do not require a “counterweight-container wallâ€. This will not only enlarge the area of ​​the lighting entrance (doors and windows between balconies and balconies), but also facilitate the use of large sliding doors for balconies. The simple explanation of the “simple support plate†is that the two sides of the balcony extend from the cantilever beams, and the beams overlap to form a balcony plate. The reason for this is that when the balcony board is large in size (ie, the balcony is too wide), the use of "cantilevered board" will inevitably increase the thickness, and increasing the thickness will inevitably increase the weight, which is very wasteful and unsightly (slant board, board The wall is thick, the end is thin, and the lower is bevel). The use of "simple plates" can reduce the amount of concrete. In this case, too, there is no need for a "counterweight can wall" to press the balcony board. “Continuous board†is a common form of floor slab for continuous multi-span frame structures. Like the long bridge with multiple pillars, it is continuous, the beam is continuous, and the corresponding “continuous boardâ€. General residential balcony boards rarely use this type of design. In addition to the brick-concrete structure, there are walls in the lower part of the windows of the residential balcony door joints of many fully cast-in-place concrete wallboard structures (known as shear wall structures), but this is not a “counterweight-damage canal wallâ€, but rather when the wall is subjected to seismic calculations. , play a role in shear. The simple explanation is that if you make a metal frame and push it sideways, it deforms into a parallelogram shape, and if you weld a certain area of ​​steel plate at a corner, it will not be easily deformed. Therefore, the lower part of the balcony window in this area cannot be dismantled. Some people's home renovations, although not dismantled, it is also undesirable to cut the upper part and reduce the height (usually the windowsill is 900) to 450 or 600. The balcony windows often have radiators and other equipment (because doors and windows are the weak spots for easy air-conditioning penetration). Removing the windows under the balcony windows will inevitably require modification of the corresponding equipment, which is also an undesirable practice in residential buildings.