Section 7102 Of Article 1. Floors And Walls From California Labor Code >> Division 5. >> Part 3. >> Chapter 1. >> Article 1.

. Every building which is of reinforced concrete construction, with reinforced concrete floors, shall have the floor filled in, either with forms or concrete, on each floor before the commencement of work upon the walls of the second floor above or the commencement of work upon the floor of the next floor above.