Classroom Function Lock Cylinders: Keyed Outside Lever with Free Egress
Engineering Overview: Engineering analysis of classroom function cylinders for educational facilities, locking the outside lever while ensuring emergency interior egress.
Technical & Engineering Specifications
| Standard | ANSI/BHMA A156.13 / NFPA 101 Life Safety |
|---|---|
| Cylinder Type | Mortise / KIK Cylinder Interface |
| Function Name | ANSI Classroom Function (F05) |
| Inside Control | Permanently Free Egress at All Times |
| Outside Control | Key Locks/Unlocks Outside Lever |
Educational Facility Security Kinematics
Classroom Function Lock Cylinders are engineered for schools and training facilities to ensure rapid lockdown capability while maintaining free egress.
Operational Mechanism
- Outside Key Operation: The teachers key locks or unlocks the exterior lever handle.
- Interior Free Egress: The inside lever is permanently coupled to the latchbolt, allowing students to exit instantly at all times without unlocking.
- Lockdown Safety: Prevents students from tampering with the lock from inside the classroom.
Frequently Asked Engineering & Selection Questions
Q1: How does a classroom function lock protect students?
It allows teachers to lock the outside door handle with a key during emergencies while ensuring the inside handle always opens immediately.