Total Flooding Enclosure Volume Calculator

Calculate protected enclosure net volume accounting for leakage, dropped ceilings, raised floors, and obstructions per NFPA 2001

Input Parameters

Results

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Gross Volume
ft³
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Net Protected Volume
ft³
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Sub-Floor Volume
ft³
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Ceiling Void Volume
ft³
Note: Per NFPA 2001, the net protected volume must include all communicating spaces: raised floor plenums, drop ceiling voids, and any connected spaces. Subtract volumes of solid obstructions >5% of room volume.

Reference

NFPA 2001 Section 5.4 - Enclosure Volume Net Volume = Gross Room Volume + Sub-Floor Plenum + Ceiling Void V_gross = Length × Width × Height V_subfloor = L × W × (subfloor depth / 12) V_ceiling = L × W × (ceiling void / 12) All communicating spaces must be included in the protected volume.