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ORDINANCE NO. NS-1794 PAGE THREE Dead latch is a spring actuated latch bolt having a beveled end and incorporating a plunger which, when depressed, 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 passageway through a wall. For the purposes of this division, a door assembly consists of the following parts: Doors, hinges, locking device or devices; operation contracts (such as handles, knobs, push plates); miscellaneous hardware and closures; the frame, in- cluding the head, threshold, and jambs plus the anchorage devices to the surrounding wall and a portion of the surround- ing wall extending thirty-six (36) inches from each side of the jambs and sixteen (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. Dwellin9 is a building or portion thereof designed exclu- sively for residential occupancy, including single family and multiple-family dwellings. Flushbolt is a normal manual, key, turn operated or automatic releasing metal throwbolt, normally used on in- active 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 ~lass means those materials meeting or exceeding ANSI Standard 297.1 - Safety Glazing. Inactive leaf or door means either leaf or door of a pair of doors which has no surface mounted hardware and which re- ceives and holds the latch or bolt of the primary locking system. Jamb is the vertical members of a door frame to which the door is secured.