Master Mason Licensing Exam
Questions and Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which of the following best describes the proper procedure for
mixing mortar?
A. Add water to the sand and cement, then mix until uniform.
B. Mix cement and water first, then add sand gradually.
C. Combine sand and cement dry, then add water gradually while
mixing.
D. Mix all ingredients with water at once without measuring.
C. Combine sand and cement dry, then add water gradually while
mixing.
Mixing dry ingredients first ensures even distribution of cement and
sand before adding water, which promotes consistent mortar strength
and workability.
, 2. What is the primary purpose of a control joint in a masonry wall?
A. To improve aesthetic appearance
B. To allow for controlled cracking due to shrinkage
C. To increase structural load capacity
D. To prevent moisture penetration
B. To allow for controlled cracking due to shrinkage
Control joints help manage the natural cracking that occurs as concrete
or masonry cures and shrinks, directing cracks to predetermined
locations.
3. When laying a brick wall, the term “course” refers to:
A. The thickness of the mortar
B. A horizontal layer of bricks
C. A vertical layer of bricks
D. The alignment of the corners
B. A horizontal layer of bricks
A course is a single horizontal layer of bricks or blocks in a masonry wall.
, 4. What is the minimum overlap of a running bond in brick masonry?
A. 25% of brick length
B. 50% of brick length
C. 33% of brick length
D. 75% of brick length
B. 50% of brick length
The running bond requires that each brick overlaps the one below by at
least half its length to ensure proper structural bonding.
5. Which type of mortar is most commonly used for load-bearing
masonry walls?
A. Type M
B. Type S
C. Type N
D. Type O
A. Type M
Type M mortar has the highest compressive strength and is suitable for
load-bearing walls and heavy structural masonry.
, 6. What is the main advantage of reinforced masonry?
A. Easier to construct than plain masonry
B. Improved resistance to tensile and shear forces
C. Lower material cost
D. Reduced need for mortar
B. Improved resistance to tensile and shear forces
Reinforcing masonry with steel improves its ability to resist tension and
shear stresses, which plain masonry handles poorly.
7. The vertical spacing between horizontal reinforcement in masonry
is called:
A. Bed joint spacing
B. Course height
C. Clear cover
D. Grout spacing
B. Course height
Vertical reinforcement is typically placed in the grout cores at specified
intervals corresponding to the height of masonry courses.
Questions and Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which of the following best describes the proper procedure for
mixing mortar?
A. Add water to the sand and cement, then mix until uniform.
B. Mix cement and water first, then add sand gradually.
C. Combine sand and cement dry, then add water gradually while
mixing.
D. Mix all ingredients with water at once without measuring.
C. Combine sand and cement dry, then add water gradually while
mixing.
Mixing dry ingredients first ensures even distribution of cement and
sand before adding water, which promotes consistent mortar strength
and workability.
, 2. What is the primary purpose of a control joint in a masonry wall?
A. To improve aesthetic appearance
B. To allow for controlled cracking due to shrinkage
C. To increase structural load capacity
D. To prevent moisture penetration
B. To allow for controlled cracking due to shrinkage
Control joints help manage the natural cracking that occurs as concrete
or masonry cures and shrinks, directing cracks to predetermined
locations.
3. When laying a brick wall, the term “course” refers to:
A. The thickness of the mortar
B. A horizontal layer of bricks
C. A vertical layer of bricks
D. The alignment of the corners
B. A horizontal layer of bricks
A course is a single horizontal layer of bricks or blocks in a masonry wall.
, 4. What is the minimum overlap of a running bond in brick masonry?
A. 25% of brick length
B. 50% of brick length
C. 33% of brick length
D. 75% of brick length
B. 50% of brick length
The running bond requires that each brick overlaps the one below by at
least half its length to ensure proper structural bonding.
5. Which type of mortar is most commonly used for load-bearing
masonry walls?
A. Type M
B. Type S
C. Type N
D. Type O
A. Type M
Type M mortar has the highest compressive strength and is suitable for
load-bearing walls and heavy structural masonry.
, 6. What is the main advantage of reinforced masonry?
A. Easier to construct than plain masonry
B. Improved resistance to tensile and shear forces
C. Lower material cost
D. Reduced need for mortar
B. Improved resistance to tensile and shear forces
Reinforcing masonry with steel improves its ability to resist tension and
shear stresses, which plain masonry handles poorly.
7. The vertical spacing between horizontal reinforcement in masonry
is called:
A. Bed joint spacing
B. Course height
C. Clear cover
D. Grout spacing
B. Course height
Vertical reinforcement is typically placed in the grout cores at specified
intervals corresponding to the height of masonry courses.
