Max Fire Area from Available Foam Concentrate
The inverse of the foam-concentrate tile: the largest fire area the concentrate on the apparatus can cover for the full duration, max area = concentrate / (application rate x foam percentage x duration). 100 gal at 0.10 gpm/ft^2, 3%, 15 min covers up to ~2,222 ft^2; a leaner percentage or shorter duration stretches it further. The rate and duration come from the fuel and the SOP. A planning aid; incident command governs.
Formula and source
max_area_ft2 = available_concentrate_gal / (application_rate_gpm_per_ft2 × (foam_percentage/100) × duration_min), the NFPA 11 concentrate = area × rate × pct × duration relation solved for the area.
NFPA 11 (Standard for Low-, Medium-, and High-Expansion Foam) by name; manufacturer foam-concentrate technical data (National Foam, Chemguard, Solberg) by name.
Audience
This tile is built for fire-ground and the adjacent professions in the Fire-Ground Engineering group. The interactive calculator runs entirely in your browser. No account, no fee, no advertising, no tracking.
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Posture
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