§14. Ordinary Concentrically Braced Frames (OCBF)

Per supplement no 2, Requirements of AISC 1997 – Section 14.2 – 14.5 have been replaced with the following:

§14.2 Strength

The required strength of members is based on load combinations 4-1 and 4-2.

To facilitate connection design the brace strength (Ry Fy Ag) is reported.

Chevron (V or inverted V) brace frames are not allowed to have braces with Kl/r larger than 720/√Fy.