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1. Scaffold lumber must be capable of supporting at least how many times the maximum
intended load?
A. 2 times
B. 3 times
C. 4 times
D. 5 times
Correct Answer: C. 4 times
2. Which of the following is not a naturally occurring joint on a wall?
A. Bevel
B. Expansion joint
C. Control joint
D. Construction joint
Correct Answer: A. Bevel
3. A Portland cement-lime mixture typically has a relatively ______ lime content and
relatively ______ sand content.
A. High; low
B. Low; high
C. High; high
D. Low; low
Correct Answer: B. Low; high
,4. Gypsum Keene's cement must set for at least 20 minutes but no longer than:
A. 2 hours
B. 4 hours
C. 6 hours
D. 8 hours
Correct Answer: C. 6 hours
5. Approximately how much does one yard of damp loose sand weigh?
A. 2,000 lbs
B. 2,300 lbs
C. 2,700 lbs
D. 3,500 lbs
Correct Answer: C. 2,700 lbs
6. If a plaster pump develops an airlock, which statement is correct?
A. Pump pressure may decrease
B. Material flow may stop
C. Air intake may be restricted
D. All of the above
Correct Answer: D. All of the above
7. The width of the legs of a horse scaffold should be a minimum of what fraction of the
scaffold height?
A. 1/4
B. 1/3
C. 1/2
D. 3/4
Correct Answer: C. 1/2
8. Why are carpenters and cabinet makers advised not to install cabinetry in a building with
wet plaster?
A. Dust contamination
B. Excessive heat
C. Too much moisture in the building
D. Lack of ventilation
Correct Answer: C. Too much moisture in the building
, 9. A sand float finish is generally used to produce a:
A. Decorative finish
B. Rough finish
C. Hard finish
D. Soft finish
Correct Answer: C. Very hard finish
10. What is the correct sequence for plastering a gypsum solid plaster single-channel stud
solid partition wall?
A. Finish, brown, scratch, backup
B. Scratch, backup, brown, finish
C. Brown, scratch, finish, backup
D. Backup, scratch, finish, brown
Correct Answer: B. Scratch, backup, brown, finish
11. Dividing screeds are typically installed by:
A. Electricians
B. Concrete workers
C. Lathing or plastering contractors
D. Cabinet installers
Correct Answer: C. Lathing or plastering contractors
12. Marblecrete panels should not exceed:
A. 100 sq ft
B. 110 sq ft
C. 120 sq ft
D. 150 sq ft
Correct Answer: C. 120 sq ft
13. According to building code, the minimum finished thickness of gypsum plaster over
expanded metal lath is:
A. 1/2 inch
B. 5/8 inch
C. 3/4 inch
D. 1 inch
Correct Answer: B. 5/8 inch
14. Which statement about Portland cement-lime finish coat is correct?
A. Applied in one coat only
B. Applied manually only
C. Applied in two coats typically by machine