Can Fire Exit Doors Be Locked

Openings into exits must have self closing fire doors that remain closed but not locked or automatically close at the sound of an alarm the door frame or hardware must be listed or approved by a national testing laboratory.
Can fire exit doors be locked. The latch of a door in a means of egress can also be retracted by knob handle or other simple type of releasing device the method of operation of which is obvious even in darkness. Even if there are. The exception being locks in childcare facilities which may be 1500mm 1650mm high as necessary. The need for outward opening fire exit doors.
C during evening hours when the plant is locked and a watchman makes his rounds is it a violation to keep the exit doors locked while he is making his rounds. Having a path of exit travel in emergency situations that employees or residents know and can rely on is the key to getting them out safely in a fire. An external door which is classified as an emergency exit can be locked. Fire exit doors can also be opened from the outside if for example a panic bar with a key lock override is fitted.
To achieve that the nfpa makes strict guidelines. Fire exits must never be obstructed and have to be clearly marked and well lit. Door lock heights on exit doors fire doors path of travel doors and disabled access doors now have a standardised lock height of 900mm 1100mm. However anyone inside not just a key holder must be able to open it in an emergency.
Most state laws make it illegal to lock exit doors if the building is occupied. A key in a glass container next to the door will suffice. The door does not have to allow people to come in through them only to exit through through them. Official guidance to the rro from the communities and local government department recommends that that all doors on escape routes should open in the direction of escape but states that this is particularly important if more than 60 people use them or they provide an exit from a high fire risk area.