Question

Match terms to their definitions. Write the corresponding letters on the blanks. Not all terms will be used.

1. the best appearing side of a piece of wood or the side that is exposed when installed	a. backing
	b. eased edge
2. a wall finish applied partway up the wall from the floor	c. face
3. a building product made by compressing wood fibers into sheet form	d. gypsum board
4. an edge of lumber whose sharp corners have been rounded	e. hardboard
	f. veneer
5. a panel used as a finished surface material made from a mineral mined from the earth

True/False

Write True or False before the statement.

1. Gypsum is the brand name for sheetrock.

2. Coreboards and liner boards come in 2-foot widths.

3. Adhesives are not used for bonding gypsum board directly to supports.

4. Supplemental fasteners should be used with contact adhesives.

5. Gypsum panels are applied first to ceilings and then to the walls.

6. The floating angle method of drywall application omits fasteners in the corner intersection of the ceilings and wall panels.

7. Drying type joint compounds are used when a faster setting time is desired.

8. A clinching tool is sometimes used to set corner beads to the proper angle.

Multiple Choice

Choose the best answer. Write the corresponding letter on the blank.

1. Type X gypsum board is commonly called .

1. backing board
2. fire-code board
3. blue board
4. eased edge

2. is used for the core of solid gypsum partitions.

1. Predecorated
2. Veneer plastic
3. X-rock
4. Coreboard

3. has a special fire-resistant core encased in a moisture-repellent paper.

1. Liner board
2. Blue board
3. Tapered gypsum
4. Regular gypsum panels

4. has a core of Portland cement reinforced with a glass fiber mesh embedded in both sides

1. Coreboard
2. Drywall
3. Wonder board
4. Sheetrock

5. For laminating gypsum boards to each other adhesive is used.

1. contact
2. construction
3. drywall
4. drywall stud

6. When single-fastening gypsum panels, fasteners are spaced inches OC on ceilings and 8 inches OC on walls.

1. a minimum of 12
2. approximately 8
3. a maximum of 7
4. no more than 6

7. Corner bead is used during drywall application to .

1. replace joint compound
2. prevent corner pieces from touching
3. make corner pieces plumb
4. reinforce and protect exterior corners

8. The fastest setting type joint compound will harden in .

1. as little as 20 to 30 minutes
2. no less than 45 minutes
3. approximately 4 hours
4. about 6 to 8 hours

9. Control joints are metal strips with flanges on both sides of a -inch, V-shaped slot.

1. â…›
2. ¼
3. ½
4. ¾

10. In cold weather, the interior temperature must be a before and during application of joint compound and for at least 4 days after application has been completed.

1. maximum of 80 degrees F for 6 hours
2. minimum of 70 degrees F for 12 hours
3. maximum of 60 degrees F for 18 hours
4. minimum of 50 degrees F for 24 hours

Terms

Read the following descriptions of gypsum panels. Write the type of panel being described on the corresponding blanks.

1. Most commonly used type; applied to interior walls and ceilings

2. Has a special tapered, rounded edge; produces a much stronger concealed joint than a tapered, square edge

3. Has greater resistance to fire because of special additives

4. Chemically treated to repel moisture; frequently used in bathrooms

5. Designed to be used as a base layer in multilayer systems

6. Faced with a specially treated blue paper; designed to receive application of veneer plastic

Put in Order

Put in order the steps for cutting and fitting gypsum board. Write the corresponding numbers on the blanks.

A. Take measurements to within ½ inch for the ceiling and ¼ inch for the walls.

B. Score the backside paper leaving some material at the top and bottom to act as a hinge.

C. Guide the knife with a drywall T-square using your toe to hold the bottom.

D. Smooth ragged edges with a drywall rasp, coarse sanding block, or knife.

E. Bend the board back against the cut. The board will break along the cut face.

F. Lifting the panel off the floor, snap the cut piece back quickly to the straight position. This will complete the break.

G. Using a utility knife, cut the board by first scoring the face side through the paper to the core. Only the paper facing needs to be cut.

Answer 1