In buildings, connections carrying calculated stresses, except for lacing, sag bars, and girts, should be designed to support at least 6 kips.
In highway bridges, connections, except for lacing bars and handrails, should contain at least two fasteners or equivalent weld. The smallest angle that may be used in bracing is 3 x 21â„2 in. In railroad bridges, the minimum number of fasteners per plane of connection is three.