North Carolina (NC) “H” Grading & Excavating
Contractor Practice Exam – 200 Questions with
Answers & Rationales| INSTANT PDF
DOWNLOAD
Overview:
This practice exam is designed for individuals preparing for the North Carolina “H” Grading &
Excavating Contractor License. It includes 200 multiple-choice questions divided into 4 batches,
covering:
Licensing & regulations – NC State Construction Licensing Board requirements, insurance,
bonding, and contractor responsibilities.
Site preparation – grading, excavation techniques, soil types, compaction, and erosion control.
Equipment & safety – heavy machinery operation, maintenance, OSHA safety standards, and
trench/excavation safety.
Materials & methods – soil stabilization, drainage systems, retaining walls, and sediment control.
Project management – estimating, project planning, inspections, and compliance.
Each question provides the correct answer and rationale, helping candidates understand both what is
right and why, to improve retention and exam readiness.
1. What is the primary purpose of site grading?
A. Improve aesthetics
B. Control drainage and provide proper slope
C. Reduce equipment wear
D. Compact soil
Answer: B
Proper grading ensures water drains away from structures, preventing flooding
and erosion.
,2. Which type of soil is most prone to erosion on slopes?
A. Clay
B. Sandy soil
C. Loam
D. Rock
Answer: B
Sandy soils have large particles and low cohesion, making them more
susceptible to erosion.
3. What is the minimum slope recommended for drainage away from a
building foundation?
A. 1%
B. 2%
C. 5%
D. 10%
Answer: B
A slope of 2% (¼ inch per foot) is standard to direct water away from
foundations.
4. Which equipment is commonly used for fine grading?
A. Bulldozer
B. Motor grader
C. Backhoe
D. Compactor
Answer: B
Motor graders are precise for shaping and leveling surfaces.
,5. What is the primary safety concern in excavation work?
A. Equipment fuel efficiency
B. Soil collapse or cave-ins
C. Noise levels
D. Dust control
Answer: B
Cave-ins are the leading cause of fatalities in excavation work.
6. What OSHA standard regulates excavation safety?
A. 29 CFR 1926 Subpart P
B. 29 CFR 1910
C. 29 CFR 1926 Subpart O
D. 29 CFR 1915
Answer: A
Subpart P covers requirements for protective systems, sloping, and trench
safety.
7. What is the purpose of compaction in grading work?
A. Reduce water infiltration
B. Increase soil stability and support for structures
C. Make excavation easier
D. Prevent weeds
Answer: B
Proper compaction prevents settling and supports pavements and foundations.
, 8. Which type of equipment is best for moving large amounts of soil
quickly?
A. Skid steer
B. Excavator
C. Backhoe
D. Bulldozer
Answer: D
Bulldozers push large volumes of soil efficiently.
9. What is the typical compaction standard for residential foundations?
A. 80% Proctor
B. 90% Proctor
C. 100% Proctor
D. 50% Proctor
Answer: B
90% of maximum dry density is standard to ensure stability.
10. Which method prevents soil erosion on slopes?
A. Mulching
B. Compaction
C. Overwatering
D. Removing vegetation
Answer: A
Mulching protects soil from water runoff and prevents erosion.
11. Which type of soil is considered most stable for excavation?
Contractor Practice Exam – 200 Questions with
Answers & Rationales| INSTANT PDF
DOWNLOAD
Overview:
This practice exam is designed for individuals preparing for the North Carolina “H” Grading &
Excavating Contractor License. It includes 200 multiple-choice questions divided into 4 batches,
covering:
Licensing & regulations – NC State Construction Licensing Board requirements, insurance,
bonding, and contractor responsibilities.
Site preparation – grading, excavation techniques, soil types, compaction, and erosion control.
Equipment & safety – heavy machinery operation, maintenance, OSHA safety standards, and
trench/excavation safety.
Materials & methods – soil stabilization, drainage systems, retaining walls, and sediment control.
Project management – estimating, project planning, inspections, and compliance.
Each question provides the correct answer and rationale, helping candidates understand both what is
right and why, to improve retention and exam readiness.
1. What is the primary purpose of site grading?
A. Improve aesthetics
B. Control drainage and provide proper slope
C. Reduce equipment wear
D. Compact soil
Answer: B
Proper grading ensures water drains away from structures, preventing flooding
and erosion.
,2. Which type of soil is most prone to erosion on slopes?
A. Clay
B. Sandy soil
C. Loam
D. Rock
Answer: B
Sandy soils have large particles and low cohesion, making them more
susceptible to erosion.
3. What is the minimum slope recommended for drainage away from a
building foundation?
A. 1%
B. 2%
C. 5%
D. 10%
Answer: B
A slope of 2% (¼ inch per foot) is standard to direct water away from
foundations.
4. Which equipment is commonly used for fine grading?
A. Bulldozer
B. Motor grader
C. Backhoe
D. Compactor
Answer: B
Motor graders are precise for shaping and leveling surfaces.
,5. What is the primary safety concern in excavation work?
A. Equipment fuel efficiency
B. Soil collapse or cave-ins
C. Noise levels
D. Dust control
Answer: B
Cave-ins are the leading cause of fatalities in excavation work.
6. What OSHA standard regulates excavation safety?
A. 29 CFR 1926 Subpart P
B. 29 CFR 1910
C. 29 CFR 1926 Subpart O
D. 29 CFR 1915
Answer: A
Subpart P covers requirements for protective systems, sloping, and trench
safety.
7. What is the purpose of compaction in grading work?
A. Reduce water infiltration
B. Increase soil stability and support for structures
C. Make excavation easier
D. Prevent weeds
Answer: B
Proper compaction prevents settling and supports pavements and foundations.
, 8. Which type of equipment is best for moving large amounts of soil
quickly?
A. Skid steer
B. Excavator
C. Backhoe
D. Bulldozer
Answer: D
Bulldozers push large volumes of soil efficiently.
9. What is the typical compaction standard for residential foundations?
A. 80% Proctor
B. 90% Proctor
C. 100% Proctor
D. 50% Proctor
Answer: B
90% of maximum dry density is standard to ensure stability.
10. Which method prevents soil erosion on slopes?
A. Mulching
B. Compaction
C. Overwatering
D. Removing vegetation
Answer: A
Mulching protects soil from water runoff and prevents erosion.
11. Which type of soil is considered most stable for excavation?
