通过对各类房屋建筑及其附属设施的建造和与其配套的线路、管道、设备的安装活动所形成的工程实体construction project

• 设计单位应根据建筑工程设计使用年限和混凝土结构暴露的环境类别，严格按照技术标准进行混凝土结构设计。

  Designing units should carry out concrete structural design in strict accordance with technical standards, and based on the design life of the construction project and the environmental class for concrete structure exposure.