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Five unforgettable principles of building structure design. The principles of architectural design refer to the fact that, on the basis of meeting functional requirements and in accordance with relevant architectural design standards, designers utilize the most advanced technologies available to carry out the design in the most economical, reasonable, and scientific manner. The specific design guidelines during the design process are as follows: The suitability of the building structure. Buildings are constructed to meet people’s needs for living or working; therefore, when designing a building structure, it is essential to ensure that it has good suitability, so as to achieve the original purpose of its construction. We are all aware of the importance of safety in architectural structure design; in any production activity, safety comes first, and this is true as well for architectural structure design. Building structures undergo deformation under the action of various loads during use, and they may also be subjected to certain accidental events, such as natural phenomena like strong winds and earthquakes. Under the impact of these external forces, the building structure must maintain its overall stability, and it should not collapse or break due to local damage. Therefore, architectural structure design must adhere to the principle of safety. The durability of building structural design: Construction projects generally involve substantial workloads and significant financial investments. Therefore, short-term reconstruction or repair is unnecessary, as it would result in **huge economic losses. Therefore, the issue of service life must be taken into account when designing building structures. In other words, it refers to buildings designed in accordance with regulations, which, under normal construction conditions and with proper use and maintenance, can achieve their intended service life without the need for major repairs. The service life of building structures is generally 50 years. The design of safety levels is generally specified in building design codes; based on the consequences resulting from structural failure, the economic losses incurred, the adverse effects produced, and the severity of threats to human life, building structures can be classified into three safety levels. In building structure design, a comprehensive evaluation is required to determine its safety level. Under normal circumstances, the safety level of each component is consistent with that of the entire structure, but appropriate adjustments can also be made according to actual conditions. In limit design, any structure has a certain load-bearing limit; once this limit is exceeded during use, problems will arise. The limit values of a building structure refer to the limits of its load-bearing capacity; if the structure exceeds its maximum load-bearing capacity, deformation or fatigue failure will occur.