Fire Load Density Calculator

Calculate fire load density in MJ/m2 for compartment fire analysis per Eurocode EN 1991-1-2 Annex E and NFPA 557

Input Parameters

Results

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Fire Load Density (qf)
MJ/m2
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Total Fire Load
MJ
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Equivalent Wood Mass
kg
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Estimated Burn Duration
min
Note: Fire load density is a key input for structural fire engineering calculations. Values from Eurocode Table E.4 represent 80th percentile (design) values. Actual surveys may yield different results. Additional combustibles (furniture, equipment) can be added to the base value.

Reference

Eurocode EN 1991-1-2 Annex E / NFPA 557 Fire load density qf (MJ/m2) 80th percentile values: Office: 511 | Retail: 600 | Hotel: 310 | Hospital: 230 School: 360 | Warehouse: 1180 | Industrial: 800 | Parking: 200 Wood calorific value: 17.5 MJ/kg Total fire load Q = qf * Af