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Section 322 Road Tunnels, Bridges and Other Limited Access Highways
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The design and installation of fire safety and life safety systems for road tunnels, bridges and other limited access highways, including emergency ventilation systems, emergency voice communication systems, fire protection systems and means of egress, shall be in accordance with NFPA 502, as modified by FC Appendix B; the Electrical Code; the provisions of the construction codes applicable to fire safety and life safety systems; and this section.
Approved fire scenarios used for designing road tunnels shall be in accordance with NFPA 502, as modified by FC Appendix B, and the following:
- The worst case scenario, as set forth in NFPA 502, as modified by FC Appendix B, shall be used for designs.
- Computational fluid dynamics analysis for the fire simulation shall be performed for an approved period of time, both with and without mitigating systems, including but not limited to ventilation and sprinkler protection.
- The tenable condition parameters reported in the computational fluid dynamics analysis, including but not limited to heat, visibility and carbon monoxide, shall be precisely reported in the analysis.
Construction operations of road tunnels, bridges and other limited access highways shall be conducted in accordance with Chapter 33 of the Building Code; this code, including FC Chapter 14; and NFPA 502, as modified by FC Appendix B. Approved fire extinguishing systems shall be provided for construction shanties and construction storage facilities and areas.