NCIDQ IDFX Questions and Correct Answers the Latest Update and Recommended Version
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Course
NCIDQ IDFX
Institution
NCIDQ IDFX
Advantages of Gypsum Drywall
low install cost, quick & easy installation, fire resistance, sound control capability, easy
availability, versatility, ease of finishing & decorating, ease of installation of doors/other
openings
Gypsum Drywall Edges
Tapered: Most common; tapered on face side ...
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NCIDQ IDFX Questions and Correct
Answers the Latest Update and
Recommended Version
Advantages of Gypsum Drywall
✓ low install cost, quick & easy installation, fire resistance, sound control capability, easy
availability, versatility, ease of finishing & decorating, ease of installation of doors/other
openings
Gypsum Drywall Edges
✓ Tapered: Most common; tapered on face side along the long dimension of the panel &
square edges at the end; allows for application of reinforcing tape & joint compound
without causing bulges at joints
✓ Square: used where appearance is NOT a factor, for basic layers of 2-layer applications
& for veneer plaster work
Levels of Gypsum Drywall
✓ 1: plenums above ceilings & other areas not normally open to view (tape embedded in
joint compound w/ surface free of excess compound
✓ 2. water resistant backing board (all joints & angles have tape embedded in joint & one
separate coat of compound
✓ 3. heavy or medium textured finishes/heavy-grade wallcovering ( 2 coats of compound)
✓ 4. Light textured or wallcoverings & where economy is concerned (3 layers)
✓ 5. all paints, severe lighting conditions (4 layers)
✓ Consists of a system of individual components that can be quickly assembled,
disassembled & reused with nearly total salvageability
✓
✓ consists of floor runners, ceiling runners, stud sections with clips to hold panels, &
prefinished gyp. wallboard panels
✓
✓ uses aluminum for framing
Definition: Hinges
✓ Consist of 2 leaves with an odd number of knuckles on one leaf and an even number of
knuckles on the other
✓
✓ knuckles are attached with a pin
✓
✓ knuckle + pin = barrel (finished with tip)
✓ MOST COMMON; has both leaves fully mortised into the frame and the edge of the
door so the hinge is flush with the surface of the frame and door
raised barrel hinge
✓ used when there is not room for the barrel to extend past the door trim; OFFSET to allow
one leaf to be mortised into the frame (kind of has an L shape on each side)
swing clear hinges
✓ has a special shape that allows the door to swing 90 degrees or 95 degrees so the full
opening of the doorway is available
definition: latches & locksets
✓ device to operate a door, hold in position & lock it
latchset
✓ ONLY holds door in place; NO lock (i.e. restroom partitions)
lockset
✓ special mechanism that allows the door to be locked with a KEY or THUMBTURN
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mortise lockset
✓ installed in rectangular area cut out of door; more SECURE than cylindrical and offers
wider variety of locking options
cylindrical lockset
✓ most common; simple to install in holes drilled into door, relatively inexpensive, most
common in residential (like doors in home bedroom)
pre-assembled lockset
✓ rectangular box that fits within a notch cut in the edge of the door; easier to install than
mortise; door knob OR lever can be used
center hung pivot
✓ allow door to swing in either direction & is completely concealed
✓
✓ pivots CANNOT be used with a door stop (instead use a flexible strip of wool pile or
synthetic stripping can be rabbeted into the edge of the door) on the same side of the
door with both jambs because it makes it difficult to seal the door against sound or light
transmission on the hinge and strike sides
door closers
✓ automatically return a door to its closed position after it is opened
✓
✓ control the DISTANCE a door can be OPENED & thereby protect the door and the
surrounding construction from damage
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