VA-Struct-Engr
Structural
Hello, I am designing a 10 story CFS building in the mid-Atlantic region. I have to have an expansion joint in the building as the footprint is large. Building is SDC A.
When sizing the expansion joint, should I take building drift due to wind into account? Both structures use braced frames as LFRS, however, they have different shapes. Should I be concerned about the structures banging into each other if subjected to wind loads?
Follow up question: If I have to take wind drifts into account, I will treat it as a serviceability issue, designing for 10 year MRI wind speed and limiting building drift to H/500 of the overall building height. Each structure will move ~2.5in at roof level. Using Square root of sum of squares, I will need a 4" (3.5") expansion joint. Does this seem reasonable?
Thank you for your responses in advance.
When sizing the expansion joint, should I take building drift due to wind into account? Both structures use braced frames as LFRS, however, they have different shapes. Should I be concerned about the structures banging into each other if subjected to wind loads?
Follow up question: If I have to take wind drifts into account, I will treat it as a serviceability issue, designing for 10 year MRI wind speed and limiting building drift to H/500 of the overall building height. Each structure will move ~2.5in at roof level. Using Square root of sum of squares, I will need a 4" (3.5") expansion joint. Does this seem reasonable?
Thank you for your responses in advance.
