@AlanRail posted:Again as I said years ago, bridges are designed differently than buildings. Stricter design codes and better steel.
Not stricter design codes just different design codes. The requirements placed on a building may be less restrictive in some areas, but they are no less stringent than that placed on a bridge. Life safety is the foundation of all building codes, and a lot of testing and science has gone into how those codes are written. The pure amount of regulation for life safety is very comprehensive when one looks at the number of different codes and regulations that apply considering the IBC, IECC, NEC, NFPA, IPC, IMC, and other building codes combined with federal laws such as the ADAAG.
As to better steel, my AISC steel manual has the same design values as everyone else's. 
