Smoke Control Design: tenability_temperature
Smoke control design parameters per NFPA 92-2021 and IBC 2021 Section 909 — stairwell and elevator pressurization differentials (0.05–0.10 in. w.g.), door opening force limits (30 lbf max), atrium exhaust prescriptive rates (4–6 ACH), axisymmetric and balcony/window plume mass flow equations (NFPA 92 Eq. 4.1, 4.10, 4.12), design fire heat release rates by occupancy (1000–5000 kW), building leakage areas by tightness class (tight/average/loose), door leakage areas, t² fire growth coefficients, tenability criteria (visibility 16–33 ft, temperature 120°C max, CO FED thresholds), and the smoke filling rate formula. Sources: NFPA 92-2021, IBC 2021 Sec. 909, ASHRAE Handbook HVAC Applications Ch. 54, Klote/Milke Handbook of Smoke Control Engineering.
| smoke control type | record id | description | notes | unit | value typical |
|---|---|---|---|---|---|
| tenability_temperature | max_temp_occupants | Tenability — Maximum Upper Layer Temperature | Above approximately 120°C dry air causes rapid incapacitation due to respiratory damage and body burns; below 80°C for humid conditions (saturated steam); sustained exposure at 60°C causes incapacitation in ~10 min | degC | 120 |
| tenability_temperature | smoke_layer_temp_typical | Typical Design Smoke Layer Temperature | Typical smoke layer temperature in design fire scenarios for mass flow calculations; temperature above the interface is a design parameter not directly controlled; volumetric flow = mass flow / (rho_smoke); rho_smoke = P/(R*T) | degC | 250 |
This is a sample. Search the full smoke control design dataset and 300+ more by creating a free account and accessing the database.
Get started for FREE