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100+ Free MCAA Masonry Practice Questions

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ASTM C270 classifies masonry mortars by type. Which mortar type has the highest compressive strength and is specified for below-grade and high-load applications?

A
B
C
D
to track
2026 Statistics

Key Facts: MCAA Masonry Exam

TMS 402

Primary Masonry Code

The Masonry Society

50 μg/m³

OSHA Silica PEL

29 CFR 1926.1153

8 ft

Max Unbraced Wall Height

OSHA 1926.706(b)

10 ft

Scaffold Fall Protection Trigger

OSHA 1926.451(g)

Type M

Highest Strength Mortar

ASTM C270 (2,500 psi)

100

Practice Questions

OpenExamPrep

The MCAA National Masonry Certification demonstrates professional competency for mason contractors. It covers TMS 402/602 (formerly ACI 530/530.1) masonry design and construction code, ASTM C270 mortar types, ASTM C476 grout, ASTM C90 CMU specs, ASTM C216/C652 brick standards, OSHA Subpart L scaffolding, OSHA 1926.1153 silica, and contractor business essentials including estimating, contracting, and project management.

Sample MCAA Masonry Practice Questions

Try these sample questions to test your MCAA Masonry exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1ASTM C270 classifies masonry mortars by type. Which mortar type has the highest compressive strength and is specified for below-grade and high-load applications?
A.Type M
B.Type S
C.Type N
D.Type O
Explanation: ASTM C270 Type M mortar has the highest compressive strength (minimum 2,500 psi at 28 days) among the standard mortar types. It is recommended for use below grade, in contact with earth, and in applications subjected to high lateral or compressive loads such as foundation walls and retaining walls.
2ASTM C270 defines mortar by two methods. When specifying mortar by the proportion specification, what is the maximum volume of masonry cement allowed in a Type S proportion mix (Portland cement–masonry cement method)?
A.1 part Portland cement to 0.5 parts masonry cement, 4.5 parts sand
B.1 part masonry cement to 3 parts sand
C.0.5 parts Portland cement to 1 part masonry cement, 4 parts sand
D.2 parts masonry cement to 6 parts sand
Explanation: ASTM C270 Table 2 Proportion Specification for Type S mortar using the Portland cement–masonry cement method calls for 1 part Portland cement, not more than 0.5 parts Type II or III masonry cement, and 4.5 parts aggregate. This combination achieves the compressive and bond strength profile required for Type S.
3A mason contractor is building an exterior retaining wall that will be in direct contact with soil. Per ASTM C270, which mortar type should be specified?
A.Type M
B.Type N
C.Type O
D.Type K
Explanation: ASTM C270 and TMS 402/602 recommend Type M mortar for masonry that is in contact with the ground or continuously wet conditions. Its minimum 2,500 psi compressive strength and high durability make it the appropriate choice for retaining walls, foundations, and below-grade applications.
4ASTM C476 governs fine and coarse grout used in reinforced masonry. What is the maximum aggregate size permitted in fine grout?
A.3/8 inch (9.5 mm)
B.1/2 inch (12.7 mm)
C.3/4 inch (19 mm)
D.No. 4 sieve (4.75 mm)
Explanation: ASTM C476 defines fine grout as grout whose aggregate passes a No. 4 (4.75 mm) sieve. Coarse grout contains aggregate up to 3/8 inch (9.5 mm). Fine grout is used in cells or spaces that are too narrow to accommodate 3/8-inch aggregate without bridging.
5TMS 402/602 (formerly ACI 530/530.1) requires grout to be placed in reinforced concrete masonry in lifts. What is the maximum grout lift height permitted when using coarse grout without mechanical consolidation?
A.12 inches (305 mm)
B.5 feet (1,524 mm)
C.1 foot 4 inches (406 mm)
D.8 feet (2,438 mm)
Explanation: TMS 602 permits coarse grout to be placed in lifts up to 5 feet 4 inches (1,626 mm) when mechanically consolidated, but without mechanical consolidation lifts are limited to 5 feet (1,524 mm). Proper lift height prevents segregation and ensures voids are fully filled around reinforcing steel.
6ASTM C90 specifies requirements for loadbearing concrete masonry units (CMU). What is the minimum face-shell thickness for a standard 8-inch (nominal) CMU under ASTM C90?
A.1 1/4 inches (32 mm)
B.1 inch (25 mm)
C.1 1/2 inches (38 mm)
D.3/4 inch (19 mm)
Explanation: ASTM C90 Table 1 specifies that 8-inch nominal CMU must have a minimum face-shell thickness of 1 1/4 inches (32 mm). This thickness ensures adequate structural performance and provides the necessary surface area for mortar bedding. Face-shell thickness requirements increase with block width.
7ASTM C216 covers facing brick. Which ASTM C216 grade is the most durable and is required for severe weathering exposure (SW) such as in northern climates?
A.Grade SW
B.Grade MW
C.Grade NW
D.Grade FBX
Explanation: ASTM C216 Grade SW (Severe Weathering) brick has the highest durability requirements, including maximum water absorption of 17% and minimum modulus of rupture of 3.0 MPa (435 psi). Grade SW is required where brick is exposed to freezing in a wet condition, such as in severe weathering regions including most of the northern United States.
8ASTM C652 covers hollow brick. What distinguishes hollow brick from solid facing brick per ASTM C216?
A.Hollow brick has a net cross-sectional area less than 75% of the gross cross-sectional area
B.Hollow brick has a net cross-sectional area less than 60% of the gross cross-sectional area
C.Hollow brick must have webs no thicker than 1 inch
D.Hollow brick is defined by weight, not cross-sectional area
Explanation: ASTM C652 defines hollow brick as units where the net cross-sectional area in every plane parallel to the bearing surface is less than 75% of the gross cross-sectional area. Solid brick (ASTM C216) has no cores or a core area less than 25% of gross area. This core space reduces weight and improves insulation while allowing for some grout filling.
9TMS 402 requires a minimum clear cover for reinforcing bars embedded in grouted masonry. What is the minimum clear cover required for a reinforcing bar exposed to earth and weather in a grouted CMU wall?
A.2 inches (51 mm)
B.1 1/2 inches (38 mm)
C.3/4 inch (19 mm)
D.3 inches (76 mm)
Explanation: TMS 402 requires a minimum clear cover of 2 inches (51 mm) for reinforcement exposed to earth or weather in grouted masonry construction. This cover protects the steel from corrosion and ensures adequate grout bond around the bar. The requirement is greater than for interior unexposed conditions.
10During cold weather masonry construction, ACI 530.1 (now TMS 602) requires that masonry materials be protected when the ambient temperature drops below what threshold?
A.40°F (4°C)
B.32°F (0°C)
C.50°F (10°C)
D.28°F (−2°C)
Explanation: TMS 602 (formerly ACI 530.1) Section 1.8C requires that when the ambient temperature falls below 40°F (4°C), masonry materials must be protected from freezing, sand and mixing water must be heated, and completed masonry must be covered. Below 40°F, cement hydration slows significantly, affecting mortar strength gain and bond.

About the MCAA Masonry Exam

National certification for mason contractors demonstrating competency in masonry codes, materials, installation, safety, and business management. Covers ACI 530/TMS 402, ASTM standards for mortar and units, OSHA scaffolding and silica regulations, and mason contractor business fundamentals.

Questions

100 scored questions

Time Limit

Not published

Passing Score

Not published

Exam Fee

Contact MCAA (Mason Contractors Association of America (MCAA))

MCAA Masonry Exam Content Outline

~30%

Masonry Materials & Standards

ASTM C270 mortar types, ASTM C476 grout, ASTM C90 CMU, ASTM C216/C652 brick, ASTM C91 masonry cement

~25%

Masonry Construction & Quality

Mortar bedding, joint tooling, grout placement, cold/hot weather masonry, flashing, weeps, cavity walls, movement joints

~20%

Masonry Design Codes (TMS 402/602)

Compressive strength (f'm), reinforcement, development length, seismic requirements, empirical design, special inspection

~15%

Safety & OSHA

Scaffolding (1926 Subpart L), fall protection, silica dust (1926.1153), masonry lift limits (1926.706), PPE, HazCom

~10%

Business & Contracting

Estimating, scheduling, contracts, change orders, liens, insurance, Davis-Bacon, workforce management

How to Pass the MCAA Masonry Exam

What You Need to Know

  • Passing score: Not published
  • Exam length: 100 questions
  • Time limit: Not published
  • Exam fee: Contact MCAA

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

MCAA Masonry Study Tips from Top Performers

1Memorize ASTM C270 mortar types in order: M (2,500 psi, below grade), S (1,800 psi, exterior), N (750 psi, general), O (350 psi, interior), K (75 psi, historic)
2Know the OSHA 1926.1153 silica AL (25 μg/m³) vs. PEL (50 μg/m³) — the AL triggers assessment, PEL triggers full program
3Remember OSHA 1926.706: maximum 8 feet of unbraced masonry wall height at end of shift
4Understand TMS 602 grout slump (8–11 inches) and maximum lift heights (5 feet without mechanical consolidation)
5Know ASTM C90 minimum face-shell thickness: 1 1/4 inches for 8-inch nominal CMU
6Learn TMS 402 minimum reinforcement cover: 2 inches for earth/weather-exposed masonry
7Study OSHA Subpart L scaffold fall protection trigger: 10 feet (not the general 6-foot trigger)

Frequently Asked Questions

What does the MCAA National Masonry Certification cover?

The MCAA National Masonry Certification tests competency across five domains: masonry materials (ASTM C270, C476, C90, C216, C652), masonry construction quality (cold/hot weather, flashing, weeps, joints), masonry design codes (TMS 402/602, reinforcement, seismic), OSHA safety (Subpart L scaffolding, 1926.1153 silica, 1926.706 lift limits), and business fundamentals (estimating, contracting, project management, liens, insurance).

What ASTM standards are covered on the MCAA masonry exam?

Key ASTM standards include: C270 (mortar types M/S/N/O/K proportions and properties), C476 (fine and coarse grout, 8–11 inch slump), C90 (loadbearing CMU, face-shell thickness), C216 (facing brick grades SW/MW/NW and types FBX/FBS/FBA), C652 (hollow brick), C91 (masonry cement Types N/S/M), C1314 (prism testing), and C780 (field mortar quality control).

What OSHA regulations are tested on the MCAA exam?

Critical OSHA regulations include: 29 CFR 1926 Subpart L (scaffolding — load capacity, fall protection at 10 ft, guardrail 38–45 in, 4:1 height-to-base ratio, competent person), 1926.706 (masonry wall lift limit 8 ft unbraced), 1926.1153 (respirable silica — AL 25 μg/m³, PEL 50 μg/m³, Table 1 controls, written Exposure Control Plan), and 1926.59 (HazCom/SDS).

What is TMS 402 and why is it important for the MCAA exam?

TMS 402 (formerly ACI 530) is the Building Code Requirements and Specification for Masonry Structures — the primary masonry structural design code adopted by the IBC. The companion standard TMS 602 (formerly ACI 530.1) covers masonry construction and quality. Together they govern f'm determination, reinforcement requirements, seismic detailing, cold/hot weather construction, grout placement, mortar bedding, and special inspection requirements that are heavily tested on the MCAA certification exam.

How do I prepare for the MCAA National Masonry Certification exam?

Focus on these high-impact areas: (1) ASTM C270 mortar types — know Type M, S, N, O strengths and uses; (2) TMS 402/602 — f'm determination, reinforcement cover, cold/hot weather, grout lift limits; (3) OSHA Subpart L scaffolding — 10-ft fall protection, 4:1 ratio, competent person; (4) OSHA 1926.1153 silica — AL 25 μg/m³, PEL 50 μg/m³, Table 1 engineering controls; (5) OSHA 1926.706 — 8-ft unbraced wall limit; (6) ASTM C90 CMU specs; (7) business fundamentals — estimating, liens, warranty, Davis-Bacon.

What is the difference between Type M and Type S mortar?

Per ASTM C270, Type M mortar has the highest compressive strength (minimum 2,500 psi at 28 days) and is recommended for below-grade, in-contact-with-earth applications such as foundation walls and retaining walls. Type S mortar (minimum 1,800 psi) is the second strongest and is widely used for exterior above-grade structural masonry including brick veneer, freestanding walls, and marine environments. Type N (minimum 750 psi) is general-purpose for above-grade interior and exterior work where high strength is not critical.

What is the OSHA silica PEL for construction masonry work?

OSHA 29 CFR 1926.1153 sets the permissible exposure limit (PEL) for respirable crystalline silica in construction at 50 micrograms per cubic meter (μg/m³) as an 8-hour time-weighted average (TWA). The action level (AL) — the trigger for exposure assessment and some controls — is 25 μg/m³ (8-hr TWA). Masonry cutting, grinding, tuck pointing, and dry sweeping are high-silica-exposure tasks requiring engineering controls (wet methods or HEPA vacuum) and, when necessary, respiratory protection.