School Vestibule Lockdown and Fire Alarm Interface
A K-8 school with 1,100 students plans a secure vestibule at the main entrance. The consultant specifies a remote-controlled electromagnetic lock on the interior vestibule door, a lockdown button at the office, and a fire alarm connection to release the lock. The exterior vestibule door is on card access. The interior door is the only path from the vestibule to the main corridor and is also a required egress path for 60 occupants in the lobby. The local code official says the mag lock cannot be installed unless it meets the exception for access-controlled egress doors. The school wants staff to be able to lock down the vestibule from the office without going to the door. The fire alarm contractor says the connection is optional because the door is not a fire door. The district's insurer wants the door to unlock on alarm. The project is in design, and the owner asks whether to use a mag lock, electric strike, or delayed egress.
1. Determine acceptable hardware and release logic for the interior vestibule door.
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The interior door is a required egress door for the lobby occupants, so it cannot be locked down in a way that blocks egress. A remote-controlled mag lock is permissible only under the access-controlled egress door provisions: egress-side sensor, manual release, release on power loss, release on fire alarm, and signage. The fire alarm connection is not optional for a mag lock; the contractor's 'not a fire door' argument misses the egress release requirement. An electric strike paired with panic hardware is often simpler because the door retains free mechanical egress; the strike can be fail-secure but must release on fire alarm and power loss if it is the only lock. Delayed egress is not a substitute for lockdown and may not be approved for this door; it delays egress and requires AHJ approval. Recommended: electric strike or mag lock with full release, fire alarm interface, emergency power, and a lockdown button that secures only the exterior or non-egress doors.
2. The principal wants a hard lockdown that keeps the door locked even if the fire alarm sounds. How do you respond?
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Explain that life safety cannot be overridden by a lockdown button. Fire alarm release exists so occupants can evacuate and responders can enter; a lock that ignores the alarm creates a trapped-occupant and liability risk. Offer alternatives: lock the exterior vestibule doors and office-controlled doors, use staff at the vestibule, use access control to lock non-egress doors, and train staff on lockdown. The interior egress door can be remotely controlled only if egress remains free. If the concern is an intruder pulling the alarm to gain entry, address it with exterior door control, cameras, and response procedures, not by defeating egress. Get the AHJ and school safety committee to approve the sequence of operations in writing.
3. List the commissioning checks you would require before accepting the installation.
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Verify that the door releases on fire alarm activation and remains released until reset; releases on loss of normal power and on emergency power transfer; the manual release works without a key; the egress sensor detects a person approaching and releases; card access and the lockdown button function as designed; the door closes and latches and the fire door self-closes; signage and instructions are posted; force and clearance meet accessibility requirements; staff are trained; and test records are provided. Witness the test with the fire alarm contractor, access control vendor, and AHJ. Include a written sequence of operation and an annual test schedule.