NCIDQ IDFX Exam Study Guide with Complete Solutions

NCIDQ IDFX Exam Study Guide with Complete Solutions Advantages of Gypsum Drywall - Correct Answer 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 - Correct Answer 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 - Correct Answer 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) Studs are spaced how far apart? - Correct Answer residential: 16" O.C. commercial: 24" O.C. Slip Joint - Correct Answer prevent wall from being damaged if the structural floor deflects Plaster Construction - Correct Answer 1. Scratch Coat 2. Brown Coat (level surface) 3. Finish Coat (Leveling & desired texture) *Add Trim Masonry Block Dimensions - Correct Answer 8"x8"x16" (-3/8" for mortar joints) Demountable Partitions - Correct Answer 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 - Correct Answer 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) Types of Hinge Tips - Correct Answer -flat button (most common; typical) -hospital -oval head (typical)