General Definitions

Question 1

3.3.2 Active Leaf

Answer 1

The first operating door of a pair, which is usually the door in which a lock is installed.

Question 2

3.3.5.1 Overlapping Astragal

Answer 2

A horizontal or vertical molding attached to one leaf of a pair of doors.

Question 3

3.3.5.1 Split Astragal

Answer 3

A horizontal or vertical molding attached to both leaves of a pair of doors.

Question 4

3.3.6 Automatic-Closing Device

Answer 4

A device that causes a door or window to close when activated by a fusible link or detector.

Question 5

3.3.7 Automatic Closing Door

Answer 5

A door that is normally open but closes when the automatic-closing device is activated.

Question 6

3.3.26 Closing Device

Answer 6

A means of closing a door from the partially or fully open position. (No faster than 3 seconds)

Question 7

3.3.30 Coordinator

Answer 7

A device used on a pair of swinging doors that prevents the active leaf from closing before the inactive leaf closes.

Question 8

3.3.39 Door Closer (swinging)

Answer 8

A labeled device that, where applied to a door and frame, causes an open door to close by mechanical force. The closing speed can be regulated by this device.

Question 9

3.3.40 Door Holder/Release Device

Answer 9

A labeled, fail-safe device, controlled by a detection device, used on an automatically closing door to release the door at the time of fire.

Question 10

3.3.42 Door Protection Plate

Answer 10

Protective material applied to the face of a door and generally made of approximately 0.05 in. (1.2 mm) thick brass, bronze, aluminum, or stainless steel or 1/8 in. (3.2 mm) thick laminated plastic.

Question 11

3.3.45 Double Egress Door

Answer 11

A pair of swing doors, each leaf of which swings in the opposite direction of each other.

Question 12

3.3.46* Field Modifications

Answer 12

Changes, not otherwise permitted by this standard, made to a listed assembly or component after it has been manufactured.

Question 13

3.3.48 Egress Side

Answer 13

The side of an opening from which traffic exits.

Question 14

3.3.52 Fire Door

Answer 14

The door component of a fire door assembly.

Question 15

3.3.53 Fire Door Assembly

Answer 15

Any combination of a fire door, a frame, hardware, and other accessories that together provide a specific degree of fire protection to the opening.

Question 16

3.3.54 Fire Door Frame

Answer 16

A component forming the perimeter of an opening in a fire door assembly that is supplied welded or knocked down and anchored to the surrounding structure.

Question 17

3.3.55 Fire Door Frame for Lights

Answer 17

A frame that, in addition to a door opening, contains an opening(s) for use with glazing materials.

Question 18

3.3.58 Fire Exit Hardware

Answer 18

Labeled devices for swinging fire doors installed to facilitate safe egress of persons and generally consisting of a cross bar and various types of latch mechanisms that cannot hold the latch in a retracted locked position. (Half the width of door required.)

Question 19

3.3.68 Flush Bolts

Answer 19

Automatic and Manual

Question 20

3.3.68.1 Automatic Flush Bolts

Answer 20

A mortised bolt installed near the top or bottom of the inactive leaf of a pair of doors that holds the inactive leaf in a closed position until the active leaf is opened.

Question 21

3.3.68.2 Manual Flush Bolts

Answer 21

A mortised bolt installed near the top or bottom of the inactive leaf of a pair of doors in which the bolts are manually extended or retracted into or out of the header or sill by means of a lever.

Question 22

3.3.71 Glazing Material

Answer 22

A transparent or translucent material used in fire door assemblies and fire windows.

Question 23

3.3.79 Hollow Metal Frame

Answer 23

A framed formed of sheet metal.

Question 24

3.3.80 Inactive Leaf

Answer 24

One door of a pair of doors that ordinarily is latched closed; the second operating door of a pair.

Question 25

3.3.85 Latching Device

Answer 25

A spring-loaded latch bolt or a gravity-operated steel bar that, after release by physical action, returns to its operating position and automatically engages the strike plate when it is returned to the closed position.

Question 26

3.3.87 Mullion

Answer 26

A fixed or removable vertical member set in a double door opening that allows both leaves to be active or set between a door and a side light or a separate, framed, glazed area.

Question 27

3.3.88 Multiple Opening Frame

Answer 27

A door assembly that consists of more than two doors.

Question 28

3.3.92 Plant-On

Answer 28

A decorative trim applied to the surface of a door.

Question 29

3.3.95 Qualified Person

Answer 29

(2016) NFPA 80) A person who, by possession of a recognized degree, certificate, professional standing, or shill, and who, by knowledge, training, and experience, has demonstrated the ability to deal with the subject matter, the work, or the project.

Question 30

3.3.101 Self-Closing Door

Answer 30

Doors that, when opened and released, return to the closed position.

Question 31

3.3.102 Self-Latching Bolt

Answer 31

An automatic-latching device that engages in a keeper to hold a door leaf in a closed position and that can be released manually.

Question 32

3.3.107 Side Lights

Answer 32

An opening in a fire door frame alongside the fire door opening that is filled with glazing material.

Question 33

3.3.108 Side Frame Light

Answer 33

A fire door frame prepared for application of a glazing material alongside the door opening.

Question 34

3.3.112 Single Point Latch

Answer 34

A latch located in the edge of a door to engage either in the frame or in the edge of the inactive leaf of a pair of doors.

Question 35

3.3.116 Spring Hinge

Answer 35

A closing device in the form of a hinge with a built-in spring used to hang and close the door.

Question 36

3.3.121 Strike

Answer 36

Electric and Open Back

Question 37

3.3.121.1 Electric Strike

Answer 37

A strike that, when activated, either releases or retains a projected latch or deadbolt.

Question 38

3.3.121.2 Open Back Strike

Answer 38

A strike applied to the inactive leaf of a pair of doors and cut away at the back to allow either leaf to open or close independently.

Question 39

3.3.122 Strike Plate

Answer 39

A wear plate for projecting hardware or a wear plate and keeper for a latch bolt.

Question 40

3.3.134 Viewer

Answer 40

A viewing device installed in a door to allow observation of persons opposite the security side of the door without having to open the door. (Needs label)