NEVADA C-18 MASONRY
CLASSIFICATION EXAM QUESTIONS
AND VERIFIED ANSWERS JUST
RELEASED.
1. When constructing a masonry wall using Type N mortar, what is the required proportion of
Portland cement, lime, and sand by volume?
A. 1 part cement, 1/4 part lime, 3 parts sand
B. 1 part cement, 1 part lime, 6 parts sand
C. 1 part cement, 1/2 to 1-1/4 parts lime, and 2-1/4 to 3 times the sum of cementitious
volumes of sand
D. 2 parts cement, 1 part lime, 9 parts sand
Answer: C
Conceptual Explanation: Per ASTM C270, Type N mortar is composed of 1 part Portland
cement, between 0.5 and 1.25 parts lime, and sand proportional to the combined volume of
the cement and lime.
2. In high-lift grouting procedures, what is the maximum height a grout pour can reach in a
single lift according to standard IBC/TMS 602 regulations, assuming specific conditions are
met?
A. 5 feet
,B. 24 feet
C. 12.6 feet
D. 8 feet
Answer: B
Conceptual Explanation: High-lift grouting allows for pours up to 24 feet in height,
provided the grout spaces are large enough and cleanouts are provided at the base of each
cell.
3. What is the minimum thickness of a load-bearing masonry wall for a single-story building
under most Nevada building codes?
A. 6 inches
B. 4 inches
C. 8 inches
D. 10 inches
Answer: A
Conceptual Explanation: The minimum nominal thickness for load-bearing masonry walls
in single-story structures is typically 6 inches, though 8 inches is more common for
residential exterior walls.
, 4. Which type of mortar is recommended for use in masonry structures that are below grade
or in contact with the earth, such as foundations?
A. Type O
B. Type N
C. Type M
D. Type S
Answer: C
Conceptual Explanation: Type M mortar has the highest compressive strength (2500 psi)
and is recommended for below-grade applications where high load-bearing and resistance
to freeze-thaw are required.
5. When installing masonry veneer, what is the maximum vertical distance allowed between
wall ties?
A. 24 inches
B. 18 inches
C. 16 inches
D. 32 inches
Answer: A
Conceptual Explanation: Building codes generally require wall ties for anchored veneer
to be spaced no more than 24 inches apart vertically and 32 inches horizontally.
CLASSIFICATION EXAM QUESTIONS
AND VERIFIED ANSWERS JUST
RELEASED.
1. When constructing a masonry wall using Type N mortar, what is the required proportion of
Portland cement, lime, and sand by volume?
A. 1 part cement, 1/4 part lime, 3 parts sand
B. 1 part cement, 1 part lime, 6 parts sand
C. 1 part cement, 1/2 to 1-1/4 parts lime, and 2-1/4 to 3 times the sum of cementitious
volumes of sand
D. 2 parts cement, 1 part lime, 9 parts sand
Answer: C
Conceptual Explanation: Per ASTM C270, Type N mortar is composed of 1 part Portland
cement, between 0.5 and 1.25 parts lime, and sand proportional to the combined volume of
the cement and lime.
2. In high-lift grouting procedures, what is the maximum height a grout pour can reach in a
single lift according to standard IBC/TMS 602 regulations, assuming specific conditions are
met?
A. 5 feet
,B. 24 feet
C. 12.6 feet
D. 8 feet
Answer: B
Conceptual Explanation: High-lift grouting allows for pours up to 24 feet in height,
provided the grout spaces are large enough and cleanouts are provided at the base of each
cell.
3. What is the minimum thickness of a load-bearing masonry wall for a single-story building
under most Nevada building codes?
A. 6 inches
B. 4 inches
C. 8 inches
D. 10 inches
Answer: A
Conceptual Explanation: The minimum nominal thickness for load-bearing masonry walls
in single-story structures is typically 6 inches, though 8 inches is more common for
residential exterior walls.
, 4. Which type of mortar is recommended for use in masonry structures that are below grade
or in contact with the earth, such as foundations?
A. Type O
B. Type N
C. Type M
D. Type S
Answer: C
Conceptual Explanation: Type M mortar has the highest compressive strength (2500 psi)
and is recommended for below-grade applications where high load-bearing and resistance
to freeze-thaw are required.
5. When installing masonry veneer, what is the maximum vertical distance allowed between
wall ties?
A. 24 inches
B. 18 inches
C. 16 inches
D. 32 inches
Answer: A
Conceptual Explanation: Building codes generally require wall ties for anchored veneer
to be spaced no more than 24 inches apart vertically and 32 inches horizontally.
