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NCIDQ: IDPX-3 EXAM QUESTIONS AND COMPLETE VERIFIED
SOLUTIONS GRADED A++
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Terms in this set (182)
4x
8
4x1
0
standard GWB sizes 4x12
4x14
1/4" -
curved/lami
nated 1/2"
-
residential
3/8" -
double
layer
5/8" -
commer
cial
Type-X GWB fire-rated
synthetic GWB byproduct of chemicals (flue gas desulfurization)
0 - no finishing
1/
14
, 6/22/25, 1:38
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1 - tape + compound
2 - water-resistant (1 extra layer of compound)
GWB finish levels
3 - 2 layers compound + textured
4 - 3 coats + wall coverings
5- + skim coat & specialty finish
1 5/8"
2 1/2"
3 5/8"
4"
steel stud sizes
6"
spaced 16" or 24" O.C.
wall corner: LC bead fits on edge of GWB + compound prior to
installation
wall corner: L bead fits on after installation + compound
wall corner: U bead edge of metal is noticeable after installation
wall corner: LK bead fits on various sizes of GWB, kerfed amp +
compound
Glass Reinforced Gypsum
GRG gypsum
molded with fiberglass for prefabrication
cement
aggregates and
lath + plaster
water metal or
2/
14