CO Wrecking Contractor Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationale 2027
Q&A| Instant Download Pdf.
1. Which condition must be evaluated before beginning demolition of
an existing structure in Colorado?
A. The color of the exterior finish
B. The age of the landscaping
C. The structural condition and stability of the building
D. The number of windows in the building
A pre-demolition assessment must determine whether the structure or
portions of it are unstable so that demolition can be sequenced safely
and collapse hazards can be controlled.
2. Before wrecking or demolishing a structure, which utility-related
action is generally essential?
A. Increase electrical service capacity
B. Identify and properly disconnect or control utilities serving the
structure
C. Relocate all utility meters to the roof
D. Leave utilities energized until demolition is complete
,Electrical, gas, water, communication, and other utilities must be
identified and appropriately disconnected or controlled before
demolition to prevent shock, fire, explosion, flooding, and other hazards.
3. During demolition, why is the sequence of removing structural
components important?
A. It primarily improves the appearance of the debris
B. It reduces the need for project documentation
C. It helps prevent premature or uncontrolled structural collapse
D. It guarantees that recyclable materials will have no damage
Demolition must generally proceed in a controlled sequence because
removing a supporting component too early can transfer loads
unexpectedly and cause an unplanned collapse.
4. Which situation presents the greatest immediate concern when
inspecting a partially demolished building?
A. Faded paint
B. Broken interior cabinets
C. Unstable walls or structural members that could collapse
unexpectedly
D. Missing floor coverings
Unstable structural elements can fail without warning and create severe
struck-by, crushing, and falling-object hazards.
5. What is the primary purpose of establishing a controlled demolition
work zone?
,A. To provide storage for employee vehicles
B. To increase public access to the project
C. To keep unauthorized persons away from demolition hazards
D. To eliminate the need for personal protective equipment
A controlled work zone limits exposure to falling debris, equipment
movement, dust, noise, unstable structures, and other demolition
hazards.
6. Which method is most appropriate for controlling dust generated
during mechanical demolition?
A. Increasing vehicle speed through the site
B. Applying water or another approved dust-control method as
appropriate
C. Removing all warning signs
D. Operating demolition equipment continuously without ventilation
Water suppression and other appropriate engineering controls can
reduce airborne dust and help protect workers and nearby occupants
from inhalation hazards.
7. When demolition debris contains potentially hazardous materials,
what should the contractor do?
A. Mix the material with ordinary debris
B. Burn it on site
C. Identify, segregate, and manage it according to applicable
, requirements
D. Bury it beneath the demolition area
Potentially hazardous materials must be properly identified and handled
because improper disposal can expose workers, the public, and the
environment to harmful substances.
8. Which material is commonly associated with serious health
concerns during demolition of older buildings?
A. Clean dimensional lumber
B. Untreated concrete
C. Asbestos-containing material
D. New ceramic tile
Older buildings may contain asbestos in materials such as insulation,
flooring, roofing, pipe coverings, and other products, requiring
appropriate identification and regulated handling before disturbance.
9. Why should demolition workers avoid disturbing suspect asbestos-
containing materials without proper evaluation?
A. They make equipment heavier
B. They always cause electrical shorts
C. Disturbance can release hazardous airborne fibers
D. They prevent concrete from curing
Cutting, breaking, grinding, or otherwise disturbing asbestos-containing
materials can release respirable fibers that pose serious health risks.
Questions And Correct Answers
(Verified Answers) Plus Rationale 2027
Q&A| Instant Download Pdf.
1. Which condition must be evaluated before beginning demolition of
an existing structure in Colorado?
A. The color of the exterior finish
B. The age of the landscaping
C. The structural condition and stability of the building
D. The number of windows in the building
A pre-demolition assessment must determine whether the structure or
portions of it are unstable so that demolition can be sequenced safely
and collapse hazards can be controlled.
2. Before wrecking or demolishing a structure, which utility-related
action is generally essential?
A. Increase electrical service capacity
B. Identify and properly disconnect or control utilities serving the
structure
C. Relocate all utility meters to the roof
D. Leave utilities energized until demolition is complete
,Electrical, gas, water, communication, and other utilities must be
identified and appropriately disconnected or controlled before
demolition to prevent shock, fire, explosion, flooding, and other hazards.
3. During demolition, why is the sequence of removing structural
components important?
A. It primarily improves the appearance of the debris
B. It reduces the need for project documentation
C. It helps prevent premature or uncontrolled structural collapse
D. It guarantees that recyclable materials will have no damage
Demolition must generally proceed in a controlled sequence because
removing a supporting component too early can transfer loads
unexpectedly and cause an unplanned collapse.
4. Which situation presents the greatest immediate concern when
inspecting a partially demolished building?
A. Faded paint
B. Broken interior cabinets
C. Unstable walls or structural members that could collapse
unexpectedly
D. Missing floor coverings
Unstable structural elements can fail without warning and create severe
struck-by, crushing, and falling-object hazards.
5. What is the primary purpose of establishing a controlled demolition
work zone?
,A. To provide storage for employee vehicles
B. To increase public access to the project
C. To keep unauthorized persons away from demolition hazards
D. To eliminate the need for personal protective equipment
A controlled work zone limits exposure to falling debris, equipment
movement, dust, noise, unstable structures, and other demolition
hazards.
6. Which method is most appropriate for controlling dust generated
during mechanical demolition?
A. Increasing vehicle speed through the site
B. Applying water or another approved dust-control method as
appropriate
C. Removing all warning signs
D. Operating demolition equipment continuously without ventilation
Water suppression and other appropriate engineering controls can
reduce airborne dust and help protect workers and nearby occupants
from inhalation hazards.
7. When demolition debris contains potentially hazardous materials,
what should the contractor do?
A. Mix the material with ordinary debris
B. Burn it on site
C. Identify, segregate, and manage it according to applicable
, requirements
D. Bury it beneath the demolition area
Potentially hazardous materials must be properly identified and handled
because improper disposal can expose workers, the public, and the
environment to harmful substances.
8. Which material is commonly associated with serious health
concerns during demolition of older buildings?
A. Clean dimensional lumber
B. Untreated concrete
C. Asbestos-containing material
D. New ceramic tile
Older buildings may contain asbestos in materials such as insulation,
flooring, roofing, pipe coverings, and other products, requiring
appropriate identification and regulated handling before disturbance.
9. Why should demolition workers avoid disturbing suspect asbestos-
containing materials without proper evaluation?
A. They make equipment heavier
B. They always cause electrical shorts
C. Disturbance can release hazardous airborne fibers
D. They prevent concrete from curing
Cutting, breaking, grinding, or otherwise disturbing asbestos-containing
materials can release respirable fibers that pose serious health risks.
