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NCCER Masonry Level 1 Certification
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A Instant Download Pdf
___________________________________________________________________
1. What is the primary purpose of mortar in masonry construction?
A. To make the wall waterproof
B. To bond masonry units together and accommodate minor irregularities
C. To increase the weight of the wall
D. To replace reinforcing steel
Answer: To bond masonry units together and accommodate minor irregularities
Rationale: Mortar bonds masonry units, distributes loads, and helps
accommodate small variations in unit surfaces and dimensions.
2. Which material is commonly used to manufacture concrete masonry units
(CMUs)?
A. Clay only
B. Portland cement, aggregates, and water
C. Gypsum and sand
D. Lime and wood fibers
Answer: Portland cement, aggregates, and water
Rationale: Standard CMUs are manufactured primarily from cementitious
materials, aggregates, and water, with other materials sometimes added
depending on the product.
, 3. What tool is commonly used to spread mortar on a masonry unit?
A. Cold chisel
B. Brick trowel
C. Plumb bob
D. Level
Answer: Brick trowel
Rationale: A brick trowel is designed to pick up, spread, and shape mortar
during brick and block installation.
4. Which personal protective equipment is especially important when cutting
masonry materials?
A. Hearing protection only
B. Safety glasses only
C. Eye, hearing, and appropriate respiratory protection
D. Cotton gloves only
Answer: Eye, hearing, and appropriate respiratory protection
Rationale: Masonry cutting can produce flying particles, high noise levels, and
respirable dust, so multiple forms of protection may be necessary.
5. What is the primary purpose of a mason's level?
A. Measuring mortar consistency
B. Checking horizontal and vertical alignment
C. Cutting brick
D. Mixing mortar
Answer: Checking horizontal and vertical alignment
Rationale: A level is used to determine whether masonry is level horizontally
and plumb vertically.
6. What does the term "plumb" mean in masonry?
,A. Exactly horizontal
B. Exactly vertical
C. Diagonal
D. Parallel to the ground
Answer: Exactly vertical
Rationale: A plumb surface or wall is vertically aligned with true vertical.
7. What is a mortar joint?
A. The space between adjacent masonry units filled with mortar
B. A crack in a masonry wall
C. A reinforced concrete beam
D. The top surface of a footing
Answer: The space between adjacent masonry units filled with mortar
Rationale: Mortar joints are the mortar-filled spaces that connect masonry units
and contribute to the wall's structural and weather-resistant performance.
8. Which tool is commonly used to strike and finish mortar joints?
A. Jointer
B. Hacksaw
C. Framing square
D. Pipe wrench
Answer: Jointer
Rationale: A jointer is shaped to compact and finish mortar joints to the desired
profile.
9. What is the purpose of a mortar mixer?
A. To cut masonry units
B. To combine mortar ingredients uniformly
, C. To measure wall height
D. To remove excess mortar
Answer: To combine mortar ingredients uniformly
Rationale: Proper mixing produces a more consistent mortar mixture and helps
distribute the ingredients throughout the batch.
10.Why should masonry units generally be laid on a full bed of mortar?
A. To increase the wall's color
B. To provide proper bearing and load transfer
C. To reduce the wall height
D. To eliminate the need for joints
Answer: To provide proper bearing and load transfer
Rationale: Proper mortar coverage allows loads to transfer between masonry
units and helps create a stable wall assembly.
11.What is the first consideration when working around construction
equipment?
A. Productivity
B. Personal and job-site safety
C. Appearance of the equipment
D. Tool storage
Answer: Personal and job-site safety
Rationale: Safe work practices are fundamental to masonry construction and
help prevent injuries and property damage.
12.What should be done before using a power tool?
A. Remove its guard
B. Inspect the tool and verify that it is safe to operate
NCCER Masonry Level 1 Certification
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A Instant Download Pdf
___________________________________________________________________
1. What is the primary purpose of mortar in masonry construction?
A. To make the wall waterproof
B. To bond masonry units together and accommodate minor irregularities
C. To increase the weight of the wall
D. To replace reinforcing steel
Answer: To bond masonry units together and accommodate minor irregularities
Rationale: Mortar bonds masonry units, distributes loads, and helps
accommodate small variations in unit surfaces and dimensions.
2. Which material is commonly used to manufacture concrete masonry units
(CMUs)?
A. Clay only
B. Portland cement, aggregates, and water
C. Gypsum and sand
D. Lime and wood fibers
Answer: Portland cement, aggregates, and water
Rationale: Standard CMUs are manufactured primarily from cementitious
materials, aggregates, and water, with other materials sometimes added
depending on the product.
, 3. What tool is commonly used to spread mortar on a masonry unit?
A. Cold chisel
B. Brick trowel
C. Plumb bob
D. Level
Answer: Brick trowel
Rationale: A brick trowel is designed to pick up, spread, and shape mortar
during brick and block installation.
4. Which personal protective equipment is especially important when cutting
masonry materials?
A. Hearing protection only
B. Safety glasses only
C. Eye, hearing, and appropriate respiratory protection
D. Cotton gloves only
Answer: Eye, hearing, and appropriate respiratory protection
Rationale: Masonry cutting can produce flying particles, high noise levels, and
respirable dust, so multiple forms of protection may be necessary.
5. What is the primary purpose of a mason's level?
A. Measuring mortar consistency
B. Checking horizontal and vertical alignment
C. Cutting brick
D. Mixing mortar
Answer: Checking horizontal and vertical alignment
Rationale: A level is used to determine whether masonry is level horizontally
and plumb vertically.
6. What does the term "plumb" mean in masonry?
,A. Exactly horizontal
B. Exactly vertical
C. Diagonal
D. Parallel to the ground
Answer: Exactly vertical
Rationale: A plumb surface or wall is vertically aligned with true vertical.
7. What is a mortar joint?
A. The space between adjacent masonry units filled with mortar
B. A crack in a masonry wall
C. A reinforced concrete beam
D. The top surface of a footing
Answer: The space between adjacent masonry units filled with mortar
Rationale: Mortar joints are the mortar-filled spaces that connect masonry units
and contribute to the wall's structural and weather-resistant performance.
8. Which tool is commonly used to strike and finish mortar joints?
A. Jointer
B. Hacksaw
C. Framing square
D. Pipe wrench
Answer: Jointer
Rationale: A jointer is shaped to compact and finish mortar joints to the desired
profile.
9. What is the purpose of a mortar mixer?
A. To cut masonry units
B. To combine mortar ingredients uniformly
, C. To measure wall height
D. To remove excess mortar
Answer: To combine mortar ingredients uniformly
Rationale: Proper mixing produces a more consistent mortar mixture and helps
distribute the ingredients throughout the batch.
10.Why should masonry units generally be laid on a full bed of mortar?
A. To increase the wall's color
B. To provide proper bearing and load transfer
C. To reduce the wall height
D. To eliminate the need for joints
Answer: To provide proper bearing and load transfer
Rationale: Proper mortar coverage allows loads to transfer between masonry
units and helps create a stable wall assembly.
11.What is the first consideration when working around construction
equipment?
A. Productivity
B. Personal and job-site safety
C. Appearance of the equipment
D. Tool storage
Answer: Personal and job-site safety
Rationale: Safe work practices are fundamental to masonry construction and
help prevent injuries and property damage.
12.What should be done before using a power tool?
A. Remove its guard
B. Inspect the tool and verify that it is safe to operate
