On doors with panic hardware there is a turn knob on the inside to lock or unlock the outside handle or dog undog the latch.
Classroom function door hardware.
This function was originally designed for schools to prevent students from tampering with the lock but most new schools have classroom security locks office function locks or electrified locks.
A classroom lock function is obviously used most often on classroom doors.
Different lock functions.
This is something i don t see covered much on this blog i mainly see the classroom function levers but when you have high occupancy or hazard rooms you need panics.
The lock can be left in the locked or unlocked state by using the key and there is no means of locking or unlocking the door from the inside.
In all cases once i explained how the lock worked the code official allowed the application.
When key is removed the latch will extend and locks the door momentary unlock.
54 may 2015 doors hardware.
Classroom lockset the latchbolt is retracted by the grip on either side unless the outside grip is locked by the outside key.
Much like to the storeroom function lockset this lock does not have a button on the inside.
Door hardware function the following list shows different door lockset functions.
These are classified into more than 20 types using codes developed by door hardware group bhma.
Understanding lock functions determining which lock function is appropriate for which door can.
There is no button on the inside like there is for the entrance lock function.
Difference between ansi and bhma.
However it does have the ability to be left unlock but only with a key.
Classroom function is used for exactly what you would think a classroom.
Night latch nl key retracts the latch momentarily to allow entry.
Class room lock unlock key unlocks the outside lever and stays unlocked until you relock the lever with the key.
Classroom function acts like vestibule.
The outside lever is locked or unlocked with a key.
Are storeroom function locks allowed on fire exit doors.
What does classroom functions mean.
Classroom lock vs office lock function.
The function or mechanical behavior of a lock especially a mortise or cylindrical lever lock should be specified for an opening.
Different lock functions.
The inside lever is always free to operate the latch bolt for egress.
Classroom functions in detail.
Manufacturers may use various terminology but these are standard terms.
How functions are typically specified.
Refer to specific manufacture data prior to specifying types.
A classroom function deadlock is often used with push pull hardware on entrance doors to multi stall bathrooms and i ve had several code officials question their use over the years.