AZ ROC Trade Exam B-3 License Exam Questions and Answers
Latest
1. When installing vinyl siding horizontally the fasteners shall not exceed__________?
Answer: 16 inches horizontal and 12 inches vertical
Rationale: This spacing ensures secure attachment while allowing for thermal expansion and
contraction of the vinyl material.
2. When installing vinyl siding vertically the fasteners shall not exceed___________?
Answer: 12 inches horizontal and 12 inches vertical
Rationale: Vertical installation requires closer spacing to prevent buckling or warping due to
gravity and wind loads.
3. What is the smallest sized screw that can be used to attach 1/2 inch gypsum board to load
bearing steel studs?
Answer: #6x 1 inch
Rationale: This size provides sufficient penetration and holding power for load-bearing
applications per gypsum board standards.
4. What is the maximum temperature allowed from a constant heat source behind drywall?
Answer: 125°
Rationale: Exceeding this can degrade the gypsum core, reducing fire resistance and structural
integrity.
5. Refer to the illustration of a 2 story house w/ lap siding plans, (complete set of plans at the
test center), How many sheets of 4x8 drywall are needed for the downstairs bathroom walls
only?
Answer: 7
, Rationale: Calculation based on wall area; assume standard bathroom dimensions requiring 7
sheets after accounting for doors/windows.
6. Which one of the following describes Type "X" drywall?
Answer: It has fire resistant core additives.
Rationale: Type X includes glass fibers or other additives to enhance fire resistance, rated for
1-hour assemblies.
7. What type of gypsum board is used on a curved wall?
Answer: 4x8x1/ Flexboard
Rationale: Flexible gypsum board (1/4" thick) bends to fit curved surfaces without cracking.
8. What screws are used to attach steel studs to the top and bottom steel track?
Answer: pan head, type S
Rationale: Pan head type S screws are self-drilling for metal-to-metal attachment.
9. Which of the following is the proper starting place for laying parquet flooring?
Answer: in the center
Rationale: Starting in the center ensures symmetry and minimizes cuts at edges.
10. All materials that are considered permissible for use as under-layment for hardwood
flooring EXCEPT for:
Answer: particle board
Rationale: Particle board absorbs moisture and swells, making it unsuitable; plywood or OSB
is preferred.
, 11. When installing strip wood flooring what is the recommended minimum staggered distance
of the butted joints from those of a the preceding row?
Answer: 6 inches
Rationale: Staggering prevents weak spots and improves structural stability.
12. What is the material used to make Vinyl flooring?
Answer: PVC (Polyvinyl Chloride)
Rationale: PVC is durable, water-resistant, and flexible for flooring applications.
13. Refer to the illustration of a 2 story house w/ lap siding plans, (complete set of plans at the
test center),R How much siding is needed on the rear of the house? (Assume using 6 inch siding
with a 2 inch overlap, add 10% for waste and deduct 130 square feet for doors and windows.)
Answer: 1,087 SQ. FT.
Rationale: Calculation: Gross area minus openings plus waste factor.
14. What product is the best used to thin an oil-based paint?
Answer: Mineral spirits
Rationale: Mineral spirits is a compatible solvent that maintains paint properties without
affecting drying time.
15. A masonry wall that shows signs of high alkalinity needs to be painted. What type of paint
should be used?
Answer: Alkali resistant paint
Rationale: Standard paints react with alkali, causing efflorescence; alkali-resistant
formulations prevent this.
16. On a Airless paint sprayer, what is responsible for the pattern of the paint?
Answer: Orifice
Latest
1. When installing vinyl siding horizontally the fasteners shall not exceed__________?
Answer: 16 inches horizontal and 12 inches vertical
Rationale: This spacing ensures secure attachment while allowing for thermal expansion and
contraction of the vinyl material.
2. When installing vinyl siding vertically the fasteners shall not exceed___________?
Answer: 12 inches horizontal and 12 inches vertical
Rationale: Vertical installation requires closer spacing to prevent buckling or warping due to
gravity and wind loads.
3. What is the smallest sized screw that can be used to attach 1/2 inch gypsum board to load
bearing steel studs?
Answer: #6x 1 inch
Rationale: This size provides sufficient penetration and holding power for load-bearing
applications per gypsum board standards.
4. What is the maximum temperature allowed from a constant heat source behind drywall?
Answer: 125°
Rationale: Exceeding this can degrade the gypsum core, reducing fire resistance and structural
integrity.
5. Refer to the illustration of a 2 story house w/ lap siding plans, (complete set of plans at the
test center), How many sheets of 4x8 drywall are needed for the downstairs bathroom walls
only?
Answer: 7
, Rationale: Calculation based on wall area; assume standard bathroom dimensions requiring 7
sheets after accounting for doors/windows.
6. Which one of the following describes Type "X" drywall?
Answer: It has fire resistant core additives.
Rationale: Type X includes glass fibers or other additives to enhance fire resistance, rated for
1-hour assemblies.
7. What type of gypsum board is used on a curved wall?
Answer: 4x8x1/ Flexboard
Rationale: Flexible gypsum board (1/4" thick) bends to fit curved surfaces without cracking.
8. What screws are used to attach steel studs to the top and bottom steel track?
Answer: pan head, type S
Rationale: Pan head type S screws are self-drilling for metal-to-metal attachment.
9. Which of the following is the proper starting place for laying parquet flooring?
Answer: in the center
Rationale: Starting in the center ensures symmetry and minimizes cuts at edges.
10. All materials that are considered permissible for use as under-layment for hardwood
flooring EXCEPT for:
Answer: particle board
Rationale: Particle board absorbs moisture and swells, making it unsuitable; plywood or OSB
is preferred.
, 11. When installing strip wood flooring what is the recommended minimum staggered distance
of the butted joints from those of a the preceding row?
Answer: 6 inches
Rationale: Staggering prevents weak spots and improves structural stability.
12. What is the material used to make Vinyl flooring?
Answer: PVC (Polyvinyl Chloride)
Rationale: PVC is durable, water-resistant, and flexible for flooring applications.
13. Refer to the illustration of a 2 story house w/ lap siding plans, (complete set of plans at the
test center),R How much siding is needed on the rear of the house? (Assume using 6 inch siding
with a 2 inch overlap, add 10% for waste and deduct 130 square feet for doors and windows.)
Answer: 1,087 SQ. FT.
Rationale: Calculation: Gross area minus openings plus waste factor.
14. What product is the best used to thin an oil-based paint?
Answer: Mineral spirits
Rationale: Mineral spirits is a compatible solvent that maintains paint properties without
affecting drying time.
15. A masonry wall that shows signs of high alkalinity needs to be painted. What type of paint
should be used?
Answer: Alkali resistant paint
Rationale: Standard paints react with alkali, causing efflorescence; alkali-resistant
formulations prevent this.
16. On a Airless paint sprayer, what is responsible for the pattern of the paint?
Answer: Orifice
