精选优质文档-倾情为你奉上专心-专注-专业222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 inlocation and constant in magnitude throughout the life of the structure.Usually the self-weight of astructure is the most important part of the structure and the unit weight of the material.Concrete densityvaries from about 90 to 120 pcf (14 to 19 KN/m )for lightweight concrete,and is about 145 pcf (23KN/m )for
