Purpose: Used to indicate whether supports are braced for determining unbraced lengths of the compression flange.
--> Given in girder input in line girder projects.
(Generated in girder input in girder system projects.)
A list of zeros and ones indicating which supports are braced and which are not. A zero indicates an unbraced support. For example, if only the second support of a 3-span girder is unbraced, the list is given as: 1 0 1 1.