Draft Curtain & Smoke Barrier Calculator
Calculate draft curtain requirements for sprinklered buildings and smoke reservoir sizing per NFPA 13, NFPA 204, and IBC.
NFPA 13 Draft Curtain Requirements
| Requirement | Standard | High-Piled |
|---|---|---|
| Max Curtained Area | 50,000 sq ft | 40,000 sq ft |
| Min Curtain Depth | 20% of ceiling ht | 20% of ceiling ht |
| Min Depth | 4 ft | 4 ft |
| Max Depth | Per smoke control | Per smoke control |
Draft Curtain Functions
Heat Collection
Draft curtains trap hot gases from a fire, creating a heat bank that activates sprinklers faster and more efficiently.
Smoke Control
Creates smoke reservoirs for venting or mechanical exhaust. Essential for large open buildings without compartmentation.
Sprinkler Efficiency
Limits the number of sprinklers operating by containing the fire plume. Reduces skipping and delayed activation.