Flashcards in Door locks and hardware Deck (25)
hold door in place, not lock.
beveled latch, automatically engages the strike mount in frame.
lock or latch type:
set in rectangular area cut out of door.
lock or latch. aka unit locks.
slid into notch made in edge of door,
req little adjustment.
found in older buildings.
lock or latch.
holes thru face and edge.
pro: easy install, less expensive than mortise.
con: fewer operating functions.
typ residential and small commercial.
cylindrical lock and deadbolt.
single action on inside releases both bolts.
typ required for ADA.
distance from edge of door
to centerline of knob/lever.
typ 2 ¾” and 5”.
alt way to hang doors,
where appearance of hinges not desired,
also @ frameless design where hinges are impossible.
swing either direction,
can be completely concealed,
but only 90º swing.
these extend width of door
vertical rods disengage latches
top and bottom.
vertical rod mounting
surface mounted or concealed
push plates + pull bars are used for:
operate door w/o automatic latching.
doors to toilet rooms/commercial kitchens.
control distance a door can be opened.
protect the door and surrounding construction from damage.
surface mounted or concealed, both at frame or door.
available integral with pivots, or fire/smoke detectors
seal vertical crack between double doors,
can act as door stop,
or provide extra security when closed.
may be fixed or removable.
used w double doors,
which are rabbeted, or have an astragal on the active leaf.
ex. prevents leaf w astragal from closing first,
preventing full close.
used on inactive leaf.
mortised or surface mounted.
active leaf closes to locked inactive leaf.
not allowed on exit doors.
mortised or surface mounted,
to bottom of door.
provide a sound or light seal.
door open = seal up.
door closed = plunger strikes jamb and forces seal down.
automatic door bottoms
edges/bottoms provide tight seal,
against water/air penetration.
also light and sound protection,
and against smoke at fire doors.
materials: neoprene, fetl, metal, vinyl.
thresholds: used at
floor materials change at door line,
where weather stripping is req’d,
where a hard surface is req’d for an automatic door bottom,
minor changes in floor level occur.
req hinge material at fire doors
steel or stainless steel
req hinge material at corrosive environments
stainless steel or bronze
finishes standardized by two groups
BHMA (builders hardware manufacturers association)