NFPA 80 Standard for Fire Doors and Other Opening Protectives
Engineering Overview: Technical guide on NFPA 80 compliance for lock cylinders installed in fire door assemblies, evaluating positive latching and annual inspections.
Technical & Engineering Specifications
| Material | Solid Brass / Steel (No low-melting alloys) |
|---|---|
| Standard | NFPA 80 Standard for Fire Doors |
| Requirement | Positive self-latching upon door closer closure |
| Annual Audit | Mandatory 100% building fire door hardware inspection |
Fire Door Life Safety (NFPA 80)
Under NFPA 80, fire doors must positively latch automatically upon closing to compartmentalize smoke and flames.
Cylinder Compliance
- Continuous Latching: Cams must not impede the positive latchbolt throw.
- Annual Inspection: Mandates annual verification of key operating torque and latch clearance.
Frequently Asked Engineering & Selection Questions
Q1: What standard or test protocol is defined here?
Technical guide on NFPA 80 compliance for lock cylinders installed in fire door assemblies, evaluating positive latching and annual inspections.