Guidelines to unbraced frame design with LRFD

✍ Scribed by Kim, Seung-Eock ;Chen, Wai-Fah

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 109 KB
• Volume: 8
• Category: Article
• ISSN: 1062-8002
• DOI: 10.1002/(sici)1099-1794(199912)8:4<273::aid-tal135>3.0.co;2-b

✦ Synopsis

This paper reviews the unbraced frame design procedures in LRFD to highlight the particular difficulties associated with the member capacity checks. Clear guidelines are provided on how the K-factors and the member forces in sway and non-sway cases be correctly used for the calculation of several other factors such as B 1 , B 2 factors and the column strength calculation P n . A step-by-step design procedure is then outlined to provide a systematic approach to check columns in framed structures. Case studies of columns in two unbraced frames made using the procedure are presented to clarify some possible confusion associated with the LRFD implementation.