NYC Health + Hospitals Supervising
Mason Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1.A supervising mason is reviewing plans for replacing a deteriorated
exterior brick wall on a hospital building. Before work begins, which action is
the MOST important to ensure the project complies with applicable codes
and maintains structural integrity?
A. Order all brick materials before reviewing the drawings.
B. Verify the wall's structural function, review approved drawings and
specifications, and ensure permits and required inspections are in place.
C. Begin demolition immediately to reduce project duration.
D. Use salvaged brick regardless of specification to reduce costs.
Answer: B
Rationale: A supervising mason must first verify the wall's structural
purpose, review approved plans and specifications, and ensure all required
permits and inspections are satisfied. This helps maintain structural safety,
code compliance, and project quality while preventing costly errors or
violations.
2. Mortar designated as Type S is MOST commonly selected because it:
,A. Has the lowest compressive strength.
B. Is intended only for decorative interior work.
C. Provides high bond strength and durability for below-grade and load-
bearing masonry.
D. Cannot be used with concrete masonry units.
Answer: C
Rationale: Type S mortar offers high bond strength and compressive
strength, making it appropriate for structural and below-grade masonry
where durability and lateral resistance are important.
3. A mason notices fresh mortar freezing overnight. What is the MOST
likely consequence?
A. Increased mortar strength.
B. Improved bond between masonry units.
C. Reduced bond strength and possible cracking.
D. Faster curing without defects.
Answer: C
Rationale: Freezing before adequate curing interrupts cement hydration,
reducing bond strength and potentially causing cracking, scaling, and
premature failure.
4. Which tool is primarily used to verify that a wall is perfectly vertical?
A. Chalk line.
B. Framing square.
C. Plumb bob.
D. Mason's brush.
Answer: C
Rationale: A plumb bob establishes a true vertical reference, allowing the
mason to determine whether a wall is plumb throughout construction.
, 5. Expansion joints in brick masonry are primarily intended to:
A. Increase mortar strength.
B. Allow for thermal movement and reduce cracking.
C. Improve brick color consistency.
D. Replace structural reinforcement.
Answer: B
Rationale: Expansion joints accommodate movement caused by
temperature changes and moisture expansion, minimizing uncontrolled
cracking.
6. When supervising employees working on a scaffold, the FIRST
responsibility is to ensure:
A. Brick deliveries arrive on time.
B. Workers finish before the end of the shift.
C. The scaffold is properly erected, inspected, and safe for use.
D. Mortar color matches existing work.
Answer: C
Rationale: Worker safety is always the supervisor's highest priority. Proper
scaffold erection and inspection reduce the risk of falls and structural
failure.
7. Efflorescence appearing on a newly completed brick wall is caused
primarily by:
A. Excessive reinforcement.
B. Soluble salts carried to the surface by moisture.
C. Improper brick color selection.
D. Excessive wall thickness.
Answer: B
, Rationale: Moisture dissolves soluble salts within masonry materials and
deposits them on the surface as it evaporates, producing white crystalline
deposits.
8. Which bond pattern provides the greatest structural interlocking in a
multi-wythe brick wall?
A. Running bond.
B. Stack bond.
C. Flemish bond with proper headers.
D. Soldier course.
Answer: C
Rationale: Flemish bond incorporates headers that tie wythes together,
improving structural continuity compared with decorative or non-
interlocking patterns.
9. The primary purpose of flashing in masonry construction is to:
A. Strengthen mortar joints.
B. Prevent thermal expansion.
C. Direct water to the exterior through weep holes.
D. Support heavy lintels.
Answer: C
Rationale: Flashing collects infiltrated water and channels it toward weep
holes, preventing moisture accumulation within wall cavities.
10. Which inspection is MOST important before laying concrete
masonry units?
A. Confirming mortar color only.
B. Checking units for damage, correct dimensions, and specification
compliance.
Mason Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1.A supervising mason is reviewing plans for replacing a deteriorated
exterior brick wall on a hospital building. Before work begins, which action is
the MOST important to ensure the project complies with applicable codes
and maintains structural integrity?
A. Order all brick materials before reviewing the drawings.
B. Verify the wall's structural function, review approved drawings and
specifications, and ensure permits and required inspections are in place.
C. Begin demolition immediately to reduce project duration.
D. Use salvaged brick regardless of specification to reduce costs.
Answer: B
Rationale: A supervising mason must first verify the wall's structural
purpose, review approved plans and specifications, and ensure all required
permits and inspections are satisfied. This helps maintain structural safety,
code compliance, and project quality while preventing costly errors or
violations.
2. Mortar designated as Type S is MOST commonly selected because it:
,A. Has the lowest compressive strength.
B. Is intended only for decorative interior work.
C. Provides high bond strength and durability for below-grade and load-
bearing masonry.
D. Cannot be used with concrete masonry units.
Answer: C
Rationale: Type S mortar offers high bond strength and compressive
strength, making it appropriate for structural and below-grade masonry
where durability and lateral resistance are important.
3. A mason notices fresh mortar freezing overnight. What is the MOST
likely consequence?
A. Increased mortar strength.
B. Improved bond between masonry units.
C. Reduced bond strength and possible cracking.
D. Faster curing without defects.
Answer: C
Rationale: Freezing before adequate curing interrupts cement hydration,
reducing bond strength and potentially causing cracking, scaling, and
premature failure.
4. Which tool is primarily used to verify that a wall is perfectly vertical?
A. Chalk line.
B. Framing square.
C. Plumb bob.
D. Mason's brush.
Answer: C
Rationale: A plumb bob establishes a true vertical reference, allowing the
mason to determine whether a wall is plumb throughout construction.
, 5. Expansion joints in brick masonry are primarily intended to:
A. Increase mortar strength.
B. Allow for thermal movement and reduce cracking.
C. Improve brick color consistency.
D. Replace structural reinforcement.
Answer: B
Rationale: Expansion joints accommodate movement caused by
temperature changes and moisture expansion, minimizing uncontrolled
cracking.
6. When supervising employees working on a scaffold, the FIRST
responsibility is to ensure:
A. Brick deliveries arrive on time.
B. Workers finish before the end of the shift.
C. The scaffold is properly erected, inspected, and safe for use.
D. Mortar color matches existing work.
Answer: C
Rationale: Worker safety is always the supervisor's highest priority. Proper
scaffold erection and inspection reduce the risk of falls and structural
failure.
7. Efflorescence appearing on a newly completed brick wall is caused
primarily by:
A. Excessive reinforcement.
B. Soluble salts carried to the surface by moisture.
C. Improper brick color selection.
D. Excessive wall thickness.
Answer: B
, Rationale: Moisture dissolves soluble salts within masonry materials and
deposits them on the surface as it evaporates, producing white crystalline
deposits.
8. Which bond pattern provides the greatest structural interlocking in a
multi-wythe brick wall?
A. Running bond.
B. Stack bond.
C. Flemish bond with proper headers.
D. Soldier course.
Answer: C
Rationale: Flemish bond incorporates headers that tie wythes together,
improving structural continuity compared with decorative or non-
interlocking patterns.
9. The primary purpose of flashing in masonry construction is to:
A. Strengthen mortar joints.
B. Prevent thermal expansion.
C. Direct water to the exterior through weep holes.
D. Support heavy lintels.
Answer: C
Rationale: Flashing collects infiltrated water and channels it toward weep
holes, preventing moisture accumulation within wall cavities.
10. Which inspection is MOST important before laying concrete
masonry units?
A. Confirming mortar color only.
B. Checking units for damage, correct dimensions, and specification
compliance.
