Question

drywall installationtrainee name date:multiple choice: choose the correct answer.1. (gypsum board) retards the spread of fire because ____.a. its core is exposed on the endb. its field and edge are covered with paperc. its core is composed of all man-made materialsd. it contains water in its crystal molecular structure2. one of the advantages of gypsum board is that it is __ because it is readily available and easy to apply, repair, decorate, and finish.a. economicalb. sustainablec. versatiled. durable3. gypsum board is considered a(n) __ material because in addition to naturally mined gypsum, it uses flue gas desulfurization (fgd) gypsum, a synthetic byproduct of coal-burning power plants.a. durableb. sustainablec. versatiled. economical4. if you break the face paper on a gypsum board while driving a nail or screw, __.a. remove the gypsum boardb. remove the nail or screwc. drive the nail or screw further into the gypsum board so it is invisibled. drive another nail or screw properly near the same place5. when you are installing fire-resistance-rated wallboard, the nails should penetrate the studs by at least __.a. ⅜\b. ½\c. ⅝\d. 1⅛\6. the head of a drywall hammer has a ____, which transfers to the depression around the nail head and helps joint compound to adhere.a. flat surfacemodule 45104 practice examnote: this exam is not eligible for a credential.copyright © 2024 nccer. permission is granted to reproduce this page provided that copies are for local use only that each copy contains this notice. page 1 of 3

Explanation:

1. Gypsum board's water content in its crystal structure turns to steam when heated, slowing fire spread.
2. The description of being readily available and easy to work with points to being cost-effective.
3. Using natural and recycled byproduct gypsum makes it environmentally sustainable.
4. Breaking face paper means the fastener is not secured properly; removing it is the correct fix.
5. Fire-rated wallboard nails need at least 3/4" penetration into studs for proper hold and fire resistance.
6. Drywall hammer heads have a convex (dimpled) surface to create a depression for joint compound.

Answer:

1. d. it contains water in its crystal molecular structure
2. a. economical
3. b. sustainable
4. b. remove the nail or screw
5. b. 3/4"
6. (Note: The option for the correct convex/dimpled surface is missing from the visible text; based on standard knowledge, the intended correct answer refers to a convex or dimpled surface, but from the provided visible options, if we assume a typo, the standard answer is a dimpled/convex head. However, from the visible options given, the intended correct choice would match the description of a textured/convex surface.)