I2 - LT #4 Flashcards
How are out-swing doors made secure on the hinged side?
With pin setscrews or safety studs
How do you tension a residential-type spring hinge?
Wind it with a special tensioning pin & insert a lock pin
How long do the security screws have to be if a door jamb is 3/4” thick where the hinge mounts & is shimmed 1/3” away from the framing?
2 1/4”
What are the three components of a passage set?
Handles, latch bolts & striker plate
What is a dummy?
A stationary door handle that isn’t part of the latch system.
What is a backset?
Distance from the leading edge of a door to the turning point centre of a handle
Why are panic bars used?
So people don’t get crushed trying to exit all at once.
Why must you check when installing hardware on a fire-rated door?
That the hardware has been tested for use for the type and rating of the door.
Passage sets are located halfway on the door so
They can be flipped upside down and hung either as a right hand or left hand door
Door hardware is available in many different finishes including
Brass, antique brass, nickel, copper, chrome aluminum, pewter and wrought iron black
The knuckle with 2 leafs is fastened to the
door
What sort of hinge is used for a heavy door?
Larger hinge with ball bearing
What is a locking pin?
Used to provide security for the out-swing exterior doors.
Hinges designed as self-closing will use:
Gravity or springs
What sort of screw is used for a metal jamb?
Machine screws
What sort of screw is used for a wooden jamb?
wood screw
What is a passage set?
Non-locking latching for hall and dining room doors
What is a privacy set?
A privacy set is a low-security lock allowing the door to be locked from within, unlocked using a thin wire
What is a keyed lock set?
Similar to privacy but used for storage room doors, classroom doors and other medium-security doors
What is a deadbolt?
Required for exterior doors
What is a latch bolt?
Handle aactivates to latch & unlatch the door
Latchbolts used with deadbolts are spring loaded and bevelled, true or false?
FALSE
Astragal provides:
A stop & weatherstripping for the active door to shut against
What is a door closer?
Part of a separation, it needs to be in the closed position during a fire, these doors normally fit with a closing device.
What is a louver?
For ventilation
What is a common type of weatherstripping?
V-shaped, vinyl, closed-cell foam that is designed to fit into a saw kerf
