Delayed Egress Locking Sustem

Delayed-Egress Locking.... NFPA 101: 7.2.1.6.1

Allowed only where permitted by the occupancy chapters (see table below).
Allowed only in buildings with approved supervised smoke/fire detection system or supervised sprinkler system.
Doors shall unlock on actuation of detection system or sprinkler system.
Door shall unlock on loss of power to the lock or the lock controlling mechanism.
An irrevesible process shall release the lock within 15 seconds upon application of a force to the release device that shall not be required to exceed 15 lbf nor be required to be continuously applied for more than 3 seconds. The initiation of the release process shall activate an audible signal in the vicinity of the door. Once the door lock has been released, relocking shall be by manual means only.
Compliant signage is required adjacent to door that reads, PUSH UNTIL ALARM SOUNDS DOOR CAN BE OPENED IN 15 SECONDS
NFPA 101: 7.9.1.1(4) requires emergency lighting at the locked door.

OCCUPANCY TYPE (new building)	CODE REF.	DELAYED EGRESS DOOR LOCKING REQUIREMENTS
AMBULATORY	()
ASSEMBLY	(12.2.2.2.4, and 7.2.1.6.1)	allows delayed-egress locking (Except at main entrance doors) in compliance with 7.2.1.6.1.
BUSINESS	(38.2.2.2.4, and 7.2.1.6.1)	allows delayed-egress lock complying with 7.2.1.6.1.
EDUCATIONAL	(14.2.2.2.3, and 7.2.1.6)	allows special locking arrangements in accordance with 7.2.1.6.
HEALTHCARE	(18.2.2.2.4(2), and 7.2.1.6.1)	allows a single delayed-egress lock complying with 7.2.1.6.1 in any egress path.
ONE & TWO FAMILY DWELLINGS	(24.2.2.2.4, and 7.2.1.6.1)
HOTELS AND DORMITORIES	(28.2.2.2.3, and 7.2.1.6.1)	allows a single delayed-egress lock complying with 7.2.1.6.1 in any egress path.
APARTMENTS	(30.2.2.2.2.2, and 7.2.1.6.1)	allows a single delayed-egress lock complying with 7.2.1.6.1 in any egress path.
MERCANTILE	(36.2.2.2.4, and 7.2.1.6.1)	allows delayed-egress lock complying with 7.2.1.6.1.
STORAGE	(42.2.2.2.2, and 7.2.1.6.1)	allows delayed-egress lock complying with 7.2.1.6.1
INDUSTRIAL	(40.2.2.2.2, and 7.2.1.6.1)	allows delayed-egress lock complying with 7.2.1.6.1