On a gabled steel moment frame, my architect requested me to take out all bottom flange bracings making it fully unbraced. Top flange is effectively braced by purlins. With wind uplift controlling, I’m always using the full width of the frame (sloping) as my compression flange unbraced length...
Do you know of latest Puerto Rico code or amendment/s recently?
My old documents (PR '98) shows UBC 97, Zone 3 for seismic and ASCE-7-95 for wind application. Anyone please share before I contact the bldg. official. Thanks.
