CO Demolition Contractor Exam
Questions And Correct Answers
(Verified Answers) Plus Rationale2026
Q&A| Instant Download Pdf
1. Which of the following is the most important factor when planning a
demolition project?
A. Project color scheme
B. Cost only
C. Safety of workers and the public
D. Speed of demolition
C. Safety of workers and the public
Rationale: Safety is the primary concern in demolition due to risks from
falling debris, structural collapse, and hazardous materials.
2. What is the purpose of conducting a pre-demolition survey?
A. To estimate project duration
B. To identify hazardous materials and structural conditions
C. To finalize the color scheme
D. To hire subcontractors
B. To identify hazardous materials and structural conditions
Rationale: A pre-demolition survey ensures that asbestos, lead, or other
hazards are identified and proper procedures are implemented.
3. Which federal regulation governs asbestos removal in demolition
projects?
A. OSHA 29 CFR 1926.1101
B. EPA 40 CFR 260
, C. DOT 49 CFR
D. NFPA 70
A. OSHA 29 CFR 1926.1101
Rationale: OSHA’s asbestos standard regulates worker safety during
demolition and renovation activities involving asbestos.
4. Before demolishing a building, which utility must be disconnected
first?
A. Internet
B. Water, gas, and electricity
C. Telephone lines
D. Street lights
B. Water, gas, and electricity
Rationale: Disconnecting utilities prevents fire, explosion, and
electrocution hazards during demolition.
5. What type of personal protective equipment (PPE) is essential when
using heavy demolition equipment?
A. Safety glasses only
B. Helmet, gloves, steel-toed boots, and eye protection
C. Casual clothing
D. Earbuds
B. Helmet, gloves, steel-toed boots, and eye protection
Rationale: Full PPE protects workers from impact, cuts, and debris injuries
during demolition operations.
6. Which demolition method is most suitable for small interior structures?
A. Implosion
B. Wrecking ball
C. Manual demolition
D. High-reach excavators
C. Manual demolition
Rationale: Manual demolition is safer and more precise for small-scale or
interior structures where machinery cannot fit.
, 7. What is the primary purpose of a dust control plan during demolition?
A. Reduce worker fatigue
B. Prevent air quality hazards and compliance with regulations
C. Improve project aesthetics
D. Reduce noise
B. Prevent air quality hazards and compliance with regulations
Rationale: Dust can contain harmful materials like silica or asbestos, so
controlling dust protects workers and the public.
8. Which material is considered hazardous and must be removed before
demolition?
A. Concrete
B. Asphalt
C. Asbestos
D. Wood
C. Asbestos
Rationale: Asbestos fibers are highly toxic when airborne; specialized
procedures are required for removal.
9. What is a common method to prevent uncontrolled collapse of a
building during demolition?
A. Using scaffolding
B. Creating a demolition sequence with partial deconstruction
C. Spraying paint on walls
D. Using more workers
B. Creating a demolition sequence with partial deconstruction
Rationale: Controlled sequencing ensures the building falls in a planned
manner to protect workers and nearby structures.
10. Which heavy equipment is typically used for large building
demolition?
A. Skid steer loader
B. Excavator with hydraulic breaker
C. Chainsaw
D. Hand hammer
Questions And Correct Answers
(Verified Answers) Plus Rationale2026
Q&A| Instant Download Pdf
1. Which of the following is the most important factor when planning a
demolition project?
A. Project color scheme
B. Cost only
C. Safety of workers and the public
D. Speed of demolition
C. Safety of workers and the public
Rationale: Safety is the primary concern in demolition due to risks from
falling debris, structural collapse, and hazardous materials.
2. What is the purpose of conducting a pre-demolition survey?
A. To estimate project duration
B. To identify hazardous materials and structural conditions
C. To finalize the color scheme
D. To hire subcontractors
B. To identify hazardous materials and structural conditions
Rationale: A pre-demolition survey ensures that asbestos, lead, or other
hazards are identified and proper procedures are implemented.
3. Which federal regulation governs asbestos removal in demolition
projects?
A. OSHA 29 CFR 1926.1101
B. EPA 40 CFR 260
, C. DOT 49 CFR
D. NFPA 70
A. OSHA 29 CFR 1926.1101
Rationale: OSHA’s asbestos standard regulates worker safety during
demolition and renovation activities involving asbestos.
4. Before demolishing a building, which utility must be disconnected
first?
A. Internet
B. Water, gas, and electricity
C. Telephone lines
D. Street lights
B. Water, gas, and electricity
Rationale: Disconnecting utilities prevents fire, explosion, and
electrocution hazards during demolition.
5. What type of personal protective equipment (PPE) is essential when
using heavy demolition equipment?
A. Safety glasses only
B. Helmet, gloves, steel-toed boots, and eye protection
C. Casual clothing
D. Earbuds
B. Helmet, gloves, steel-toed boots, and eye protection
Rationale: Full PPE protects workers from impact, cuts, and debris injuries
during demolition operations.
6. Which demolition method is most suitable for small interior structures?
A. Implosion
B. Wrecking ball
C. Manual demolition
D. High-reach excavators
C. Manual demolition
Rationale: Manual demolition is safer and more precise for small-scale or
interior structures where machinery cannot fit.
, 7. What is the primary purpose of a dust control plan during demolition?
A. Reduce worker fatigue
B. Prevent air quality hazards and compliance with regulations
C. Improve project aesthetics
D. Reduce noise
B. Prevent air quality hazards and compliance with regulations
Rationale: Dust can contain harmful materials like silica or asbestos, so
controlling dust protects workers and the public.
8. Which material is considered hazardous and must be removed before
demolition?
A. Concrete
B. Asphalt
C. Asbestos
D. Wood
C. Asbestos
Rationale: Asbestos fibers are highly toxic when airborne; specialized
procedures are required for removal.
9. What is a common method to prevent uncontrolled collapse of a
building during demolition?
A. Using scaffolding
B. Creating a demolition sequence with partial deconstruction
C. Spraying paint on walls
D. Using more workers
B. Creating a demolition sequence with partial deconstruction
Rationale: Controlled sequencing ensures the building falls in a planned
manner to protect workers and nearby structures.
10. Which heavy equipment is typically used for large building
demolition?
A. Skid steer loader
B. Excavator with hydraulic breaker
C. Chainsaw
D. Hand hammer
