requirements of the code, the structure is required to achieve a two-hour fire resistance. ... Because the steel braced frame is designed primarily for high seismic demands, the members are over-sized for the fire limit state where the applied loads are significantly reduced.

Does steel bracing need fire protection?

The document defines what is deemed to be primary and secondary steelwork. It advises that steel bracing members required to provide stability to the structure at the fire limit state should have adequate fire resistance unless alternative load paths can be identified.

Does structural steel need to be fireproofed?

When is Steel Fireproofing Required? Commercial construction structural steel columns must meet at least the X106, or 2-hour, fire-resistance rating, among other requirements. The most common fire-resistance ratings are 2-, 3-, and 4-hour ratings.