What should be paid attention to when replacing doors and windows during renovation? How replace doors and windows in non-frame structures?

There are many types of house structures. For example, our most common frame structure, brick-concrete structure, some frame shear wall structures, frame tube structures, and other types. So when we decorate the house, we generally need to understand the structural type of the house. Because of different structural types, the methods that can be handled are different. Home Miscellaneous Forum uses the following question as an example to answer the question of replacing windows in brick-concrete structures.
What should be paid attention to when replacing doors and windows in non-frame structures?
What should be paid attention to when replacing doors and windows in non-frame structures? In fact, this question generally refers to what should be paid attention to when replacing doors and windows in our traditional brick-concrete structures? Because many houses in our families at this stage are mostly brick-concrete structures except for the frame. In addition, there are high-rise frame-shear structures. Below I will answer the questions about replacing doors and windows in these houses separately.
(I): What should be paid attention to when replacing doors and windows in brick-concrete structures?
The so-called brick-concrete structure means that many houses were built of red bricks in the past. The red brick wall is used as a load-bearing structure, and then concrete columns or mortar are poured at the intersection of the red brick wall to ensure that the red brick wall is a whole. For the replacement of doors and windows in brick-concrete structures, we need to pay attention to the following three points.
①: Brick-concrete masonry walls shall not be demolished arbitrarily. In other words, if we replace doors and windows and find that the openings of the doors and windows are not suitable, the brick walls of the brick-concrete structure cannot be demolished at will at this time. Because the brick walls of the brick-concrete structure are load-bearing, demolition may cause changes in force and affect stability.
②: The concrete on the side of the brick-concrete structure must be remade after demolition. Because the concrete on the side of the door and window openings of the brick-concrete structure may be poured later. So this can be removed, but after demolition, the concrete side columns must be remade.
③: The concrete lintel on the upper part of the brick-concrete structure should be avoided as much as possible. In other words, when we replaced the doors and windows, we found there was concrete on the upper part of the door and window openings, which was basically a lintel. When replacing doors and windows, try to avoid removing the lintel. If we remove the lintel, we must reinstall another lintel as required. The installed lintel has the same specifications as the original lintel, and the installation position can be installed a distance upward.
Tips: ①. When we decorate our home, we must first confirm the general structure of our house. For example, is it a brick-concrete structure or a frame structure? It is very simple to confirm the walls of the brick-concrete structure, and almost all walls are load-bearing. ②. For the walls of the brick-concrete structure, it is strictly forbidden to open holes in the wall during decoration. That is to say, the walls of the brick-concrete structure are not allowed to be demolished and modified at will. If the opening is changed, a concrete lintel must be added to ensure the stability of the opening.
(II): What should be paid attention to when replacing doors and windows with frame shear wall structures?
Many high-rise buildings at this stage, are basically frame shear wall structures. For this type of structure, we also need to pay attention to its characteristics when decorating. For the structure of the frame shear wall, most of them are reinforced concrete walls, and a very small part is later masonry walls. So when we decorate, I personally think that we should also confirm its type. When replacing doors and windows, I personally provide the following three suggestions.
①: For both sides of the door and window openings, if it is a concrete wall, no changes shall be made. If the walls on both sides of the opening are brick walls, the openings can generally be demolished at this time. So everyone must judge the specific wall types on both sides of the opening.
②: For the upper side of the door and window openings, everyone also needs to be cautious. Because there are generally lintels on the upper side of the door and window openings. At this time, you must check clearly. If it is a concrete lintel with a brick wall above, then this lintel is not allowed to be removed. But we can change the position of the lintel. If the upper part of the door and window openings are all reinforced concrete walls, then it is strictly forbidden to make any changes at this time.
③: When the door and window openings are too large, we can add structural columns around them, or increase the masonry brick walls. In other words, it is basically possible to make the openings smaller.
Operation suggestions: ①. For high-rise buildings, any changes to the openings must be particularly careful. The most important thing here is to avoid changing any reinforced concrete wall as much as possible. ②. If we find that the opening in the high-rise building is not suitable, we should check the walls on both sides of the opening. If it is a brick wall, the opening can be changed; if it is a reinforced concrete wall, everyone must not change it. ③. Everyone also needs to pay attention to an important point, that is, the walls in high-rise buildings must not be cut with a cutting machine. Many families cut holes directly in the wall to increase the door and window openings, which seriously damages the structure of the building and makes the building unsafe.
Conclusion
Regarding the renovation and replacement of the original doors and windows, my personal opinion is to first determine the general structural type of the house, and then check both sides of the door and window openings. Take corresponding measures according to the walls on both sides of the door and window openings. So when we decorate our home, my personal opinion is that we should try not to change the original door and window openings. Especially to increase the original door and window openings. If you change the position of the original door and window openings, you must be careful because it is generally difficult to achieve.
