Construction Engineering durability in several categories

Ministry of Construction Engineering durability classification, but according to the design life span and safety classification reliability design of uniform standards, in accordance with the building structure, "the General Provisions:'s design life of the structure shall be in accordance with Table 1.0.5 using. 15 temporary structures in Table 1.0.5 design life span of classification categories designed useful life (years) sample 225 easy replacement of structural members 350 ordinary houses and structures 4100 monuments and especially important architectural structure building structure design, should be based on the structural damage the seriousness of the possible consequences (endangering human life, resulting in economic losses, social impact, etc.), the use of different levels of security. The division of the structural safety level should be consistent with the requirements of Table 1.0.8 Table 1.0.8 the security level of the building structure level of security is not serious destruction of a very severe consequences for the type of building housing two serious general housing three secondary Note special buildings housing its security level should be determined according to the specific circumstances of a separate; 2 foundation design level of security and the security level of the building structure, design seismic requirements shall also comply with the provisions of the existing national norms.