Section 7263 Of Article 4. Structural Steel Framed Buildings From California Labor Code >> Division 5. >> Part 3. >> Chapter 1. >> Article 4.

. The sequence of erection, bolting, temporary guying, riveting and welding shall be such as to maintain the stability of the structural frame at all times during construction. This applies to the dead weight of the structure, plus weight and working reactions of all construction equipment placed thereon plus any external forces that may be applied.