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steel beam

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Hi Folks:
 
I have a roof framing plan of an older tilt up industrial building that was retrofitted for seismic repairs.  There are some steel beams labeled
" 12B14".  Are these what they were called prior to being renamed W12x14?  If not, does anyone know what their properties are?  I have some large diameter sheet metal duct that has to be hung from the roof framing and braced for lateral and barring providing new purlins, I would like to use them if they calc.
 
Thanks in advance for any info y'all might have on this.
 
Ray Shreenan  SE