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ORDINANCE NO. NS-143~ PAG~ TWO "DEADBOLT is a lock bolt which does not have a spring action as opposed to a latch bolt, which does. The bolt must be actuated by a key and/or a knob or thumb turn and when projected becomes locked against return by end pressure. "DEAD LATCH" is a spring actuated latch bolt having a beveled end and incorporating a plunger which, when de- pressed, automatically locks the projected latch bolt against return by end pressure. "DOOR ASSEMBLY" means a unit composed of a group of parts or components which make up a closure for a passage-way through a wall. For the purposes of this Division, a door assembly consists of the following parts: doors, hinges, lock- ing device or devices; operation contracts (such as handles, knobs, push plates); miscellaneous hardware and closures; the frame, including the head, threshold, and jambs plus the anchor- age devices to the surrounding wall and a portion of the sur- rounding wall extending 36 inches from each side of the jambs and 16 inches above the head. "DOOR STOPS" are the projections along the top and sides of a door jamb which check the door's swinging action. "DOUBLE CYLINDER DEADBOLT" is a deadbolt which can be activated only by a key from either the interior or exterior of the building. "DWELLING" is a building or portion thereof designed exclusively for residential occupancy, including single family and multiple family dwellings. "ENFORCING AUTHORITY" means the Director of Building Safety and Housing or his authorized representatives. "FLUSHBOLT" is a manual, key or turn operated metal bolt, normally used on inactive door(s), that is attached to the top and bottom of the door and engages in the head and threshold of the frame. "FULLY TEMPERED GLASS" means those materials meeting or exceeding ANSI Standard Z 97.1 - Safety Glazing. "JAMB" is the vertical members of a door frame to which the door is secured. "JAMB/STRIKE" means that component of a door assembly which receives and holds secure the extended lock bolt; the strike and jamb used together are considered a unit. "JAMB/WALL" is that component of a door assembly to which a door is attached and secured; the wall and jamb used together are considered a unit. "KEY-IN-KNOB" is a lockset having the key cylinder and other lock mechanisms contained in the knob. "LATCH OR LATCH BOLT" is a beveled, spring-actuated bolt, which may or may not have a deadlocking device. "LOCK OR LOCKSET" is a keyed device (complete with cylinder, latch or deadbolt mechanism, and trim such as knobs, levers, thumb turns, escutcheons, etc.) for securing a door in a closed position against forced entry. "LOCKING DEVICE" is a part of a window or sliding door assembly which is intended to prevent movement of the movable sash or door.