Apply IBC Appendix H sign provisions correctly, accounting for its non-mandatory adoption status

Steps

1. Confirm whether the local jurisdiction has actually adopted IBC Appendix H by reference — appendices to the IBC are not automatically part of the adopted code and apply only if the adopting ordinance specifically references them
2. If adopted, check for local amendments to Appendix H sections (jurisdictions frequently modify or delete specific subsections, e.g., portable-sign provisions or wood-anchor/support details) rather than assuming the unmodified ICC text governs
3. Use Appendix H's definitions and general requirements only as a starting framework for sign structural/electrical coordination with the rest of the IBC and NEC, not as a substitute for the locally adopted sign ordinance's zoning content
4. Confirm which IBC edition's Appendix H is in force locally, since provisions have been renumbered/revised across editions (2018, 2021, 2024)
5. Where Appendix H is not adopted, identify what the jurisdiction uses instead (a standalone local sign code, a different appendix, or general IBC chapters) for structural sign requirements