精选优质文档-倾情为你奉上附录：中英文翻译英文部分：LOADSLoads that act on structures are usually classified as dead loads or live loads.Dead loads are fixed in location and constant in magnitude throughout the life of the structure.Usually the self-weight of a structure is the most important part of the structure and the unit weight of the material.Concrete density varies from about 90 to 120 pcf (14 to 19 )for lightweight concrete,and is about 145 pcf (23 )for normal concrete.In calculating the dead load of
