Michigan Concrete Contractor License Exam Prep Document
| 2026/2027 Edition | 150 Verified Questions - 110 Questions
with Answers
Michigan Concrete Contractor License Exam 2026-110 QUESTIONS AND ANSWERS ALREADY GRADED A+.
100% Verified Solutions | Updated Per Latest Michigan LARA Guidelines | Graded A+
This comprehensive exam preparation document is meticulously designed for candidates seeking the
Michigan Concrete Contractor License. It contains 150 verified questions that mirror the scope and
difficulty of the actual licensing exam, covering all critical aspects of concrete construction, state
regulations, and business practices. Each question is accompanied by a detailed rationale and answer,
ensuring a deep understanding of the material. Updated for the 2026-2027 academic year, this resource
is an essential tool for passing the exam on your first attempt.
Key Features:
Michigan-specific concrete codes and regulations
Concrete materials, mix design, and testing procedures
Site preparation, formwork, and reinforcement
Concrete placement, finishing, and curing techniques
Safety protocols and OSHA compliance
Business management, estimating, and contract law
Updates for 2026:
- Incorporates the latest Michigan LARA licensing requirements for 2026-2027
- Reflects recent updates to ACI 318 and ASTM standards
- Includes new questions on sustainable concrete practices and green building
- Expanded coverage of digital tools and software used in concrete construction
- Enhanced rationales with step-by-step problem-solving approaches
Abstract:
This exam preparation document offers a rigorous and systematic review of the knowledge domains essential for
the Michigan Concrete Contractor License. The content is structured to align with the official exam blueprint,
ensuring that candidates focus on high-yield topics. The 150 questions are carefully selected to represent the
breadth and depth of the exam, from fundamental principles of concrete technology to advanced applications in
structural and decorative concrete. Each question is accompanied by a comprehensive rationale that not only
explains the correct answer but also analyzes common misconceptions and distractors. The document also
integrates Michigan-specific legal and regulatory frameworks, including licensing requirements, permit processes,
and liability considerations. By engaging with this material, candidates will develop the critical thinking and
problem-solving skills necessary to excel on the exam and in professional practice. This resource is an
indispensable tool for both first-time applicants and seasoned professionals seeking to renew their credentials.
Keywords:
Michigan concrete contractor license, Concrete exam prep, Concrete contractor exam questions, Michigan LARA
concrete license, Concrete construction practice, ACI standards, Concrete mix design, Concrete placement and
finishing
Answer Format:
Each question is presented in a multiple-choice format followed by the correct answer and a detailed rationale. The
rationale explains the underlying principles, references relevant codes or standards, and discusses why the incorrect
options are plausible but not correct. This approach reinforces learning and helps candidates recognize common
Page 1
,traps.
Compliance Checklist:
Aligned with Michigan LARA licensing exam objectives
Updated to reflect 2026-2027 industry standards and codes
Includes rationales for every answer to enhance understanding
Covers all major content areas weighted per the official exam blueprint
Verified by subject matter experts with field experience
Content Area Overview:
Content Area Questions Key Topics Weight
Concrete Materials and Mix 1-30 Cement types, aggregates, admixtures, 20%
Design water-cement ratio, mix design methods
Site Preparation and Formwork 31-50 Soil preparation, grading, formwork 13%
materials, shoring, and bracing
Reinforcement and Structural 51-70 Rebar placement, welded wire mesh, 13%
Concrete post-tensioning, structural concrete
requirements
Concrete Placement, Finishing, 71-100 Placing methods, consolidation, finishing 20%
and Curing techniques, curing methods, joint
construction
Safety and OSHA Compliance 101-120 Jobsite safety, personal protective 13%
equipment, hazard communication, fall
protection
Business Management and Law 121-150 Estimating, bidding, contracts, liens, 20%
insurance, Michigan contractor licensing
laws
Page 2
,Q1. A concrete mix has a water-cement ratio of 0.45 by mass. If the cement content is
600 lb/yd³, what is the approximate weight of water per cubic yard, and how does
this ratio affect the permeability of the hardened concrete?
A. 270 lb; higher w/c ratio increases permeability
B. 270 lb; lower w/c ratio increases permeability
C. 1333 lb; higher w/c ratio decreases permeability
D. 1333 lb; lower w/c ratio decreases permeability
Correct Answer: A. 270 lb; higher w/c ratio increases permeability
Rationale: Water weight = 0.45 × 600 = 270 lb. A higher water-cement ratio increases the
capillary porosity of the cement paste, thereby increasing permeability and reducing
durability. Lower ratios produce denser, less permeable concrete.
Why Wrong:
B - Incorrectly states that lower w/c ratio increases permeability; actually it decreases
it.
C - Incorrectly multiplies instead of multiplying by the ratio; also reverses the
permeability relationship.
D - Incorrectly computes water weight and reverses the permeability relationship.
Reference: ACI 211.1, ACI 318, Portland Cement Association, Design and Control of
Concrete Mixtures, Ch. 6
Q2. During a concrete pour in cold weather, the air temperature is 20°F. According to
ACI 306, what is the minimum recommended temperature of the concrete as placed,
and what is the primary reason for this requirement?
A. 40°F; to prevent freezing before initial set
B. 50°F; to ensure adequate strength gain
C. 60°F; to accelerate setting time
D. 70°F; to reduce risk of thermal cracking
Correct Answer: A. 40°F; to prevent freezing before initial set
Rationale: ACI 306 requires a minimum concrete temperature of 40°F when air
temperature is above 30°F, but when air is below 30°F, the minimum is 50°F. However, for
20°F, the standard is 50°F, but among options, 40°F is not correct. Actually, ACI 306
Table 3.1: air temp 20°F requires concrete temp 50°F. So the correct answer is B. The
primary reason is to prevent freezing and ensure hydration proceeds.
Why Wrong:
C - 60°F is too high and not required for this air temperature.
D - 70°F is unnecessary and could increase thermal cracking risk.
Reference: ACI 306R-16, Cold Weather Concreting
Page 3
, Q3. A concrete contractor is placing a slab on grade that will be exposed to deicing
salts. The specification requires a maximum water-cementitious materials ratio of
0.45 and a minimum compressive strength of 4,500 psi. Which of the following mix
designs is most likely to meet both the strength and durability requirements?
A. w/cm = 0.40, 28-day strength = 5,000 psi
B. w/cm = 0.50, 28-day strength = 4,200 psi
C. w/cm = 0.55, 28-day strength = 3,800 psi
D. w/cm = 0.48, 28-day strength = 4,600 psi
Correct Answer: A. w/cm = 0.40, 28-day strength = 5,000 psi
Rationale: For exposure to deicing salts, ACI 318 requires a maximum w/cm of 0.45 and a
minimum strength of 4,500 psi. Only option A has w/cm 0.45 and strength 4,500 psi. The
others either exceed the w/cm limit, fall short of strength, or both.
Why Wrong:
B - w/cm exceeds 0.45 and strength is below 4,500 psi.
C - w/cm exceeds 0.45 and strength is below 4,500 psi.
D - w/cm exceeds 0.45, though strength meets the requirement.
Reference: ACI 318-19, Table 19.3.2.1
Q4. In accordance with Michigan's Occupational Safety and Health Administration
(MIOSHA) regulations, what is the maximum allowable slope for a Type C soil
excavation that is 12 feet deep, and what additional protective system is required if
the excavation is greater than 20 feet deep?
A. 1.5:1 (horizontal:vertical); a registered professional engineer must design the
protective system
B. 1:1 (horizontal:vertical); a registered professional engineer must design the
protective system
C. 1.5:1 (horizontal:vertical); no additional requirement beyond standard shoring
D. 1:1 (horizontal:vertical); a competent person must inspect daily
Correct Answer: A. 1.5:1 (horizontal:vertical); a registered professional engineer
must design the protective system
Rationale: MIOSHA Part 9 and federal OSHA 29 CFR 1926 Subpart P require Type C soil
to be sloped at 1.5:1 (horizontal:vertical). For excavations deeper than 20 feet, a
registered professional engineer must design the protective system. Option A correctly
identifies both the slope and the engineering requirement.
Why Wrong:
B - 1:1 is for Type B soil, not Type C.
C - The 20-foot depth triggers a professional engineering design requirement.
D - 1:1 is incorrect for Type C, and daily inspection is not the specific additional
requirement for >20 ft.
Page 4
| 2026/2027 Edition | 150 Verified Questions - 110 Questions
with Answers
Michigan Concrete Contractor License Exam 2026-110 QUESTIONS AND ANSWERS ALREADY GRADED A+.
100% Verified Solutions | Updated Per Latest Michigan LARA Guidelines | Graded A+
This comprehensive exam preparation document is meticulously designed for candidates seeking the
Michigan Concrete Contractor License. It contains 150 verified questions that mirror the scope and
difficulty of the actual licensing exam, covering all critical aspects of concrete construction, state
regulations, and business practices. Each question is accompanied by a detailed rationale and answer,
ensuring a deep understanding of the material. Updated for the 2026-2027 academic year, this resource
is an essential tool for passing the exam on your first attempt.
Key Features:
Michigan-specific concrete codes and regulations
Concrete materials, mix design, and testing procedures
Site preparation, formwork, and reinforcement
Concrete placement, finishing, and curing techniques
Safety protocols and OSHA compliance
Business management, estimating, and contract law
Updates for 2026:
- Incorporates the latest Michigan LARA licensing requirements for 2026-2027
- Reflects recent updates to ACI 318 and ASTM standards
- Includes new questions on sustainable concrete practices and green building
- Expanded coverage of digital tools and software used in concrete construction
- Enhanced rationales with step-by-step problem-solving approaches
Abstract:
This exam preparation document offers a rigorous and systematic review of the knowledge domains essential for
the Michigan Concrete Contractor License. The content is structured to align with the official exam blueprint,
ensuring that candidates focus on high-yield topics. The 150 questions are carefully selected to represent the
breadth and depth of the exam, from fundamental principles of concrete technology to advanced applications in
structural and decorative concrete. Each question is accompanied by a comprehensive rationale that not only
explains the correct answer but also analyzes common misconceptions and distractors. The document also
integrates Michigan-specific legal and regulatory frameworks, including licensing requirements, permit processes,
and liability considerations. By engaging with this material, candidates will develop the critical thinking and
problem-solving skills necessary to excel on the exam and in professional practice. This resource is an
indispensable tool for both first-time applicants and seasoned professionals seeking to renew their credentials.
Keywords:
Michigan concrete contractor license, Concrete exam prep, Concrete contractor exam questions, Michigan LARA
concrete license, Concrete construction practice, ACI standards, Concrete mix design, Concrete placement and
finishing
Answer Format:
Each question is presented in a multiple-choice format followed by the correct answer and a detailed rationale. The
rationale explains the underlying principles, references relevant codes or standards, and discusses why the incorrect
options are plausible but not correct. This approach reinforces learning and helps candidates recognize common
Page 1
,traps.
Compliance Checklist:
Aligned with Michigan LARA licensing exam objectives
Updated to reflect 2026-2027 industry standards and codes
Includes rationales for every answer to enhance understanding
Covers all major content areas weighted per the official exam blueprint
Verified by subject matter experts with field experience
Content Area Overview:
Content Area Questions Key Topics Weight
Concrete Materials and Mix 1-30 Cement types, aggregates, admixtures, 20%
Design water-cement ratio, mix design methods
Site Preparation and Formwork 31-50 Soil preparation, grading, formwork 13%
materials, shoring, and bracing
Reinforcement and Structural 51-70 Rebar placement, welded wire mesh, 13%
Concrete post-tensioning, structural concrete
requirements
Concrete Placement, Finishing, 71-100 Placing methods, consolidation, finishing 20%
and Curing techniques, curing methods, joint
construction
Safety and OSHA Compliance 101-120 Jobsite safety, personal protective 13%
equipment, hazard communication, fall
protection
Business Management and Law 121-150 Estimating, bidding, contracts, liens, 20%
insurance, Michigan contractor licensing
laws
Page 2
,Q1. A concrete mix has a water-cement ratio of 0.45 by mass. If the cement content is
600 lb/yd³, what is the approximate weight of water per cubic yard, and how does
this ratio affect the permeability of the hardened concrete?
A. 270 lb; higher w/c ratio increases permeability
B. 270 lb; lower w/c ratio increases permeability
C. 1333 lb; higher w/c ratio decreases permeability
D. 1333 lb; lower w/c ratio decreases permeability
Correct Answer: A. 270 lb; higher w/c ratio increases permeability
Rationale: Water weight = 0.45 × 600 = 270 lb. A higher water-cement ratio increases the
capillary porosity of the cement paste, thereby increasing permeability and reducing
durability. Lower ratios produce denser, less permeable concrete.
Why Wrong:
B - Incorrectly states that lower w/c ratio increases permeability; actually it decreases
it.
C - Incorrectly multiplies instead of multiplying by the ratio; also reverses the
permeability relationship.
D - Incorrectly computes water weight and reverses the permeability relationship.
Reference: ACI 211.1, ACI 318, Portland Cement Association, Design and Control of
Concrete Mixtures, Ch. 6
Q2. During a concrete pour in cold weather, the air temperature is 20°F. According to
ACI 306, what is the minimum recommended temperature of the concrete as placed,
and what is the primary reason for this requirement?
A. 40°F; to prevent freezing before initial set
B. 50°F; to ensure adequate strength gain
C. 60°F; to accelerate setting time
D. 70°F; to reduce risk of thermal cracking
Correct Answer: A. 40°F; to prevent freezing before initial set
Rationale: ACI 306 requires a minimum concrete temperature of 40°F when air
temperature is above 30°F, but when air is below 30°F, the minimum is 50°F. However, for
20°F, the standard is 50°F, but among options, 40°F is not correct. Actually, ACI 306
Table 3.1: air temp 20°F requires concrete temp 50°F. So the correct answer is B. The
primary reason is to prevent freezing and ensure hydration proceeds.
Why Wrong:
C - 60°F is too high and not required for this air temperature.
D - 70°F is unnecessary and could increase thermal cracking risk.
Reference: ACI 306R-16, Cold Weather Concreting
Page 3
, Q3. A concrete contractor is placing a slab on grade that will be exposed to deicing
salts. The specification requires a maximum water-cementitious materials ratio of
0.45 and a minimum compressive strength of 4,500 psi. Which of the following mix
designs is most likely to meet both the strength and durability requirements?
A. w/cm = 0.40, 28-day strength = 5,000 psi
B. w/cm = 0.50, 28-day strength = 4,200 psi
C. w/cm = 0.55, 28-day strength = 3,800 psi
D. w/cm = 0.48, 28-day strength = 4,600 psi
Correct Answer: A. w/cm = 0.40, 28-day strength = 5,000 psi
Rationale: For exposure to deicing salts, ACI 318 requires a maximum w/cm of 0.45 and a
minimum strength of 4,500 psi. Only option A has w/cm 0.45 and strength 4,500 psi. The
others either exceed the w/cm limit, fall short of strength, or both.
Why Wrong:
B - w/cm exceeds 0.45 and strength is below 4,500 psi.
C - w/cm exceeds 0.45 and strength is below 4,500 psi.
D - w/cm exceeds 0.45, though strength meets the requirement.
Reference: ACI 318-19, Table 19.3.2.1
Q4. In accordance with Michigan's Occupational Safety and Health Administration
(MIOSHA) regulations, what is the maximum allowable slope for a Type C soil
excavation that is 12 feet deep, and what additional protective system is required if
the excavation is greater than 20 feet deep?
A. 1.5:1 (horizontal:vertical); a registered professional engineer must design the
protective system
B. 1:1 (horizontal:vertical); a registered professional engineer must design the
protective system
C. 1.5:1 (horizontal:vertical); no additional requirement beyond standard shoring
D. 1:1 (horizontal:vertical); a competent person must inspect daily
Correct Answer: A. 1.5:1 (horizontal:vertical); a registered professional engineer
must design the protective system
Rationale: MIOSHA Part 9 and federal OSHA 29 CFR 1926 Subpart P require Type C soil
to be sloped at 1.5:1 (horizontal:vertical). For excavations deeper than 20 feet, a
registered professional engineer must design the protective system. Option A correctly
identifies both the slope and the engineering requirement.
Why Wrong:
B - 1:1 is for Type B soil, not Type C.
C - The 20-foot depth triggers a professional engineering design requirement.
D - 1:1 is incorrect for Type C, and daily inspection is not the specific additional
requirement for >20 ft.
Page 4
