Changing the structure of a building is a very serious and professional matter. It will involve many factors such as safety and regulations. Detailed investigation, design and evaluation must be carried out by a structural engineer with corresponding qualifications before a specific and feasible modification plan can be determined. You can't change it at will. The following are some common building structure modification scenarios and examples of general considerations, but please be sure not to operate directly according to this, and be sure to seek professional guidance.： ### Add partition wall 1. **Determine the position and length of the wall**： -Avoid the main structural components of the building, such as beams, columns, etc. If it is a frame structure, try not to rest the partition wall directly on the beam as much as possible, so as not to change the force state of the beam. You can consider setting up trabecules between the beams to support the partition wall. The size and reinforcement of the trabecules need to be determined by structural calculations. -When determining the length of the partition wall, consider the stability of the wall. For longer partition walls, structural columns should be set up at certain distances (such as 3-4 meters). The structural columns are reliably connected to the wall and have good binding measures with the main structure of the building. 2. **Wall material selection**： -Lightweight partition wall materials such as aerated concrete blocks are more suitable, their weight is light, and the additional load on the building structure is small. However, if it is a heavier solid brick partition wall, its impact on the structure needs to be accurately calculated, and the foundation and other parts may need to be reviewed. 3. **Connection node design**： -The connection between the top of the partition wall and the floor slab or beam can be flexibly connected, such as the use of U-shaped cards or the setting of rubber pads on the top of the wall to adapt to the deformation of the structure. The bottom can be supported by a concrete platform or reliably anchored to the ground to prevent the wall from sliding. ### Open hole 1. **Location of the hole**： - Try to avoid making large holes in load-bearing walls and columns. If a hole must be made in the wall, the size of the hole should not be too large. Generally, the width of the hole should not exceed 3 times the thickness of the wall, and the height should not exceed 4 meters. For larger holes, strengthening measures should be set up around the hole. For example, beams should be set up and down the hole. The size and reinforcement of the beams should be determined according to the size of the hole and the calculation of the upper wall load. -For opening holes in the beam, the position of the holes should avoid the support and main force parts of the beam. When the distance between the edge of the hole and the edge of the beam support is small, the beam needs to be reinforced. Reinforcement methods such as pasting carbon fiber cloth and adding steel can be used. 2. **Hole shape**： -Try to use rectangular holes to avoid irregular shapes. Circular or polygonal holes have a relatively large weakening effect on the structure, and it is more complicated to deal with. 3. **Reinforcement around the entrance of the cave**： -For the wall around the larger hole, oblique steel bars or shaped steel can be provided at the four corners of the hole to strengthen it. The diameter and spacing of oblique steel bars should be determined according to the size of the hole and the force of the wall. At the same time, structural columns can be added on both sides of the wall around the entrance of the hole to improve the integrity and shear resistance of the wall. ### Increase floor load 1. **Load assessment**： -First of all, it is necessary to accurately evaluate the size, distribution and mode of action of the new load. For example, if you want to add equipment or stack heavy objects on the floor, you need to know the weight and size of the equipment, as well as the number and distribution range of heavy objects. 2. **Review of floor carrying capacity**： -Ask the structural engineer to conduct a detailed review of the carrying capacity of the floor slab. If the existing carrying capacity of the floor is insufficient, reinforcement measures may need to be taken. Reinforcement methods include increasing the cross-section of the floor slab (such as pouring a concrete laminate at the bottom or top of the floor slab), pasting carbon fiber cloth for reinforcement, and setting up steel beams. 3. **Delivery path optimization**： -The new load must be passed to the foundation through a reasonable path. If the new load is large, it may be necessary to consider adding vertical components such as pillars or walls under the floor to share the load. The connection nodes between these new vertical components and the original structure should be designed to be reliable to ensure that the load can be transmitted smoothly. Once again, it is emphasized that any changes to the structure of a building must be carried out in strict accordance with relevant specifications and processes under the guidance of professional structural engineers to ensure the structural safety of the building.