Please note that I am not a licensed structural engineer or architect, so the following suggestions are for reference only. Any specific changes should be evaluated and designed in detail by professional engineers based on site conditions and local regulations. When considering modifications to a building's structure, you can usually start from the following aspects: 1. Clarify the purpose of the renovation: - Determine the main goal of the renovation (such as increasing space, improving lighting, enhancing earthquake resistance, or optimizing usage functions). - Analyze whether the existing structure meets future usage needs and possible safety hazards. 2. Conduct a comprehensive structural assessment: - Entrust professionals to inspect the building's current load-bearing system, foundation, walls, and connections. - Based on the assessment results, determine which parts are critical load-bearing components and which can be modified or removed. 3. Choose the appropriate structural reinforcement or modification plan: - If load-bearing walls need to be removed or modified, consider adding a new support system (such as installing load-bearing beams, columns, or steel structural frames) to compensate for the load transfer that may occur after the change. - For situations where space needs to be expanded or changed, it may be necessary to design a long-span structure, which usually involves the use of prestressed concrete, steel structure, or composite structure. - For old buildings, it may be necessary to strengthen the foundation and earthquake resistance measures to meet modern building standards. 4. Comply with local building codes and standards: - Before designing a renovation plan, understand and comply with local building codes, earthquake resistance standards and other relevant regulations to ensure that the project obtains the necessary permits. - Some areas may have additional restrictions and protection requirements for historical buildings or special-purpose buildings. 5. Develop a detailed construction plan: - Ensure that comprehensive drawing design, material selection and project budget are done before construction. - Considering the possible impact on the original structure during construction, it is recommended to develop emergency measures and construction monitoring plans to ensure safe construction. In short, building structural renovation is a complex and risky project that involves knowledge in multiple professional fields (structure, civil engineering, architecture, etc.). Therefore, it is strongly recommended that you work with a qualified structural engineer or architectural designer to get professional guidance from preliminary evaluation, design to construction to ensure safety, legality and achieve the desired results.