Tham khảo tài liệu 'structural steel designers handbook part 1', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | PREFACE TO THE THIRD EDITION This edition of the handbook has been updated throughout to reflect continuing changes in design trends and improvements in design specifications. Criteria and examples are included for both allowable-stress design ASD and load-and-resistance-factor design LRFD methods but an increased emphasis has been placed on LRFD to reflect its growing use in practice. Numerous connection designs for building construction are presented in LRFD format in conformance with specifications of the American Institute of Steel Construction AISC . A new article has been added on the design of hollow structural sections HSS by LRFD based on a new separate HSS specification by AISC. Also because of their growing use in light commercial and residential applications a new section has been added on the design of cold-formed steel structural members based on the specification by the American Iron and Steel Institute AISI . It is applicable to both ASD and LRFD. Design criteria are now presented in separate parts for highway and railway bridges to better concentrate on those subjects. Information on highway bridges is based on specifications of the American Association of State Highway and Transportation Officials AASHTO and information on railway bridges is based on specifications of the American Railway Engineering and Maintenance-of-Way Association AREMA . A very detailed example of the LRFD design of a two-span composite I-girder highway bridge has been presented in Section 11 to illustrate AASHTO criteria and also the LRFD design of a single-span composite bridge in Section 12. An example of the LRFD design of a truss member is presented in Section 13. This edition of the handbook regrettably marks the passing of Fred Merritt who worked tirelessly on previous editions and developed many other handbooks as well. His many contributions to these works are gratefully acknowledged. Finally the reader is cautioned that independent professional judgment must be .
