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Calcimator

Smoke Control Design Calculator

Smoke exhaust and pressurization for high-rise buildings.

Inputs

Results

Exhaust/supply rate (CFM)

40,667

Exhaust rate (m³/min)1,151.6
Smoke mass flow (kg/s)18.26
Smoke layer temp (°C)97
Pressure differential (Pa)0
Makeup air (CFM)40,667
Est. fan power (kW)7.4
Exhaust/supply points5
How to Use This Calculator
  1. Enter System mode, Design fire size (kW), and Clear height above fire (m).
  2. Set Atrium floor area (m²), Ambient temperature (°C), and Number of stairwells.
  3. Review the Exhaust/supply rate (CFM) result.
  4. Use Exhaust rate (m³/min) and Smoke mass flow (kg/s) to inform your decision.
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