A question came to me this week asking how brace framing can be modeled so that the braces are going in the correct location while having the correct analytical relationship to the columns.  In this case the client wanted the “L” angles to be back to back but still be associated with the center-line of the columns.  The L angle OOTB family has parameters built in so that the centroid of the size can be set, these are “X” and “Y” parameters.  The values in these parameters coincide with the values for the centroid, if the type is duplicated and then these values are set to 0′-0″ then they will be modeled from the back side of the L.