Answer :
The IBC is the primary standard for commercial building design in the U.S., while NFPA 5000 has been adopted by California. Neither ANSI/TIA-568-C, ISO 9001, ASTM International, nor NFPA 101 are primary standards for this purpose.
The standard for the design of commercial buildings in the United States is primarily covered by the International Building Code (IBC), which has an objective to provide minimum standards to safeguard life, health, property, and public welfare while regulating and controlling design and construction. The second code, developed by the National Fire Protection Association, is called NFPA 5000 and has been adopted by California. Neither ANSI/TIA-568-C, ISO 9001, ASTM International nor NFPA 101 are directly responsible for commercial building design standards; however, NFPA 101 could be related as it deals with life safety from fire and similar emergencies in buildings.