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Flashcards in Door locks and hardware Deck (25)
1

latchset:

hold door in place, not lock.

beveled latch, automatically engages the strike mount in frame.

2

lock or latch type:
set in rectangular area cut out of door.
most secure.

mortise

3

lock or latch. aka unit locks.
slid into notch made in edge of door,
req little adjustment.
found in older buildings.

pre assembled:

4

lock or latch.
aka cylindrical.
holes thru face and edge.

pro: easy install, less expensive than mortise.

con: fewer operating functions.

typ residential and small commercial.

bored

5

lock.
cylindrical lock and deadbolt.
single action on inside releases both bolts.

interconnected

6

typ required for ADA.

lever

7

backset:

distance from edge of door

to centerline of knob/lever.

typ 2 ¾” and 5”.

8

alt way to hang doors,
where appearance of hinges not desired,

pivots

also @ frameless design where hinges are impossible.

9

swing either direction,
can be completely concealed,
but only 90º swing.

center-hung pivots

10

panic hardware:
these extend width of door

push bars

11

panic hardware:
vertical rods disengage latches

top and bottom.

12

panic hardware:
vertical rod mounting

surface mounted or concealed

13

push plates + pull bars are used for:

operate door w/o automatic latching.
doors to toilet rooms/commercial kitchens.

14

control distance a door can be opened.

protect the door and surrounding construction from damage.

surface mounted or concealed, both at frame or door.

closers

15

available integral with pivots, or fire/smoke detectors

closers

16

seal vertical crack between double doors,
can act as door stop,
or provide extra security when closed.
may be fixed or removable.

astragal

17

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.

coordinators

18

used on inactive leaf.
mortised or surface mounted.
active leaf closes to locked inactive leaf.
not allowed on exit doors.

flush bolts

19

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

20

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.

weatherstripping:

21

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.

22

req hinge material at fire doors

steel or stainless steel

23

req hinge material at corrosive environments

stainless steel or bronze

24

finishes standardized by two groups

US Designations
(federal govt)

BHMA (builders hardware manufacturers association)

25

finishes designations range from lowest brass to highest stainless steel, numbered:

605/US3
to
630/US32.