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Minimum Fire Code # Complete Operational Analysis APPENDIX D ACCESS WIDTH The Appendix D table used here prescribes 20 feet through 500 feet and 26 feet for the 501-750-foot dead-end category. For roads over 750 feet, special approval is required rather than one prescribed standard width. AERIAL OPERATING FOOTPRINT Published online specifications for a comparable same -generation RK 104-foot aerial platform on a Spartan Gladiator chassis report approximately 18'5" of full outrigger/stabilizer spread. MOBILE WATER -SUPPLY LANE REFERENCE NFPA 1142 uses a 12-foot minimum clear width for each lane of travel on roadways providing access to required water supplies. Its water -shuttle guidance also recognizes the benefit of one-way shuttle routes where possible so apparatus do not have to pass one another on narrow roads. Operating element Width Comparable RK 104 full stabilizer spread NFPA 1142 clear lane reference Combined side -by -side comparison Appendix D 501-750 ft roadway Difference 18'5" 12'0" 30'5" 26'0" 4'5" WHAT THE GEOMETRY DEMONSTRATES The combined comparison is approximately 30'5" — about 4'5" wider than Appendix D's 26-foot roadway. This is not presented as an NFPA requirement that a 12-foot tender lane must always exist beside a deployed aerial. It demonstrates that minimum access -road width and simultaneous fireground operating space are different questions. IDEAL CONDITIONS ASSUMED This is before snow accumulation/storage, parked vehicles, retaining walls or constrained shoulders, hose lines, personnel, open compartments, stabilizer pads, disabled vehicles, construction, a downed tree or powerline, utility work, or another obstruction. WHY A MINIMUM IS A BASELINE Minimum fire -access requirements are a baseline rather than a complete substitute for local street -design policy. Minnesota State Fire Code is one variable alongside Police/EMS access, Public Works maintenance, engineering, connectivity, infrastructure and local operating conditions. Fire Code should inform Ramsey's street policy. It should not substitute for Ramsey's street policy. Future -apparatus note: U.S. fire apparatus have generally trended larger and heavier over recent decades as cabs, equipment, tanks, emissions systems and all -hazards capabilities expanded. Some departments intentionally specify smaller apparatus for constrained streets. This packet does not assume Ramsey's future aerial will necessarily be larger; future apparatus should not be assumed to make operating -space concerns disappear, and long-lived street design should consider actual and reasonably foreseeable emergency -vehicle dimensions. Technical disclaimer: Ramsey Aerial 21's individual factory build sheet has not been located. The approximately 18'5" stabilizer dimension is drawn from published online specifications for a comparable same -generation RK 104-foot platform / Spartan Gladiator apparatus and should be verified against Ramsey's actual apparatus manual/build specification before being treated as an exact Ramsey measurement. The 12-foot figure is an NFPA 1142 clear -lane reference; the 30'5" calculation is an illustrative operating -space comparison, not a standalone code -mandated combined width. Aooendix D table source Fire. Enaineenna — comnarahle RK 104 / Spartan Gladiator NFPA 1142 reference FAMA— Emeraencv Vehicle Size & Weiaht Guide USDOT/Volne — Downsizing Fire Annaratus Fire Code minimums + operational geometry