CO Demolition Contractor Exam
Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2027 Q&A| Instant
Download Pdf.
1. A demolition contractor is preparing to demolish a multi-story
commercial building. Before beginning structural demolition, what
is the MOST important initial action for protecting workers and the
public?
A. Begin removing exterior walls to improve access
B. Determine the salvage value of structural materials
C. Perform a thorough engineering survey to identify structural
conditions, hazards, and the demolition sequence
D. Remove all windows and doors before inspecting the structure
C. Perform a thorough engineering survey to identify structural
conditions, hazards, and the demolition sequence
Rationale: A competent engineering survey should identify the building's
construction, structural condition, potential collapse hazards, utilities,
adjacent structures, and other conditions that could affect the safe
planning and execution of demolition work.
, 2. During the pre-demolition survey of an older building, the
contractor discovers materials suspected of containing asbestos.
What should occur BEFORE demolition disturbs those materials?
A. Wet the materials and demolish the structure immediately
B. Have the suspected materials properly evaluated and handled
according to applicable asbestos requirements
C. Cover the materials with demolition debris
D. Burn the materials to eliminate contamination
B. Have the suspected materials properly evaluated and handled
according to applicable asbestos requirements
Rationale: Suspected asbestos-containing materials require appropriate
identification, assessment, and regulated handling before demolition
activities disturb them and potentially release hazardous fibers into the
air.
3. Why must utilities generally be identified and properly
disconnected, shut off, capped, or otherwise controlled before
demolition begins?
A. To reduce the amount of debris generated
B. To prevent hazards such as electrocution, fire, explosion, flooding, and
uncontrolled releases
C. To make demolition equipment operate faster
D. To eliminate the need for worker training
,B. To prevent hazards such as electrocution, fire, explosion, flooding,
and uncontrolled releases
Rationale: Active electrical, gas, water, steam, and other utility systems
can create severe hazards when damaged during demolition, making
proper utility control essential before structural work begins.
4. A demolition crew is removing a masonry wall adjacent to a public
sidewalk. Which measure is MOST appropriate for protecting
pedestrians?
A. Allow pedestrians to walk beneath the work area if workers wear hard
hats
B. Establish effective barriers and exclusion zones and provide overhead
protection when required
C. Post only a verbal warning at the beginning of each shift
D. Schedule the demolition during normal business hours without
additional controls
B. Establish effective barriers and exclusion zones and provide overhead
protection when required
Rationale: Public protection requires physical controls that prevent
unauthorized persons from entering hazardous areas and protect
against falling debris where exposure is possible.
5. What is the PRIMARY purpose of establishing an exclusion zone
around active demolition operations?
, A. To provide a location for storing employee vehicles
B. To keep unauthorized personnel and the public away from falling
objects, equipment movement, and collapse hazards
C. To increase the amount of available salvage material
D. To eliminate the need for warning signs
B. To keep unauthorized personnel and the public away from falling
objects, equipment movement, and collapse hazards
Rationale: Demolition exclusion zones reduce exposure to unpredictable
hazards, including structural collapse, flying debris, falling materials,
and heavy-equipment operations.
6. Before using an excavator to pull down part of a structure, the
demolition contractor should FIRST confirm that:
A. The excavator has the largest available bucket
B. The operator can see the entire site from the cab
C. The structure can be safely demolished using the planned method and
sequence without exposing workers or equipment to uncontrolled
collapse
D. All debris has been separated for recycling
C. The structure can be safely demolished using the planned method
and sequence without exposing workers or equipment to uncontrolled
collapse
Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2027 Q&A| Instant
Download Pdf.
1. A demolition contractor is preparing to demolish a multi-story
commercial building. Before beginning structural demolition, what
is the MOST important initial action for protecting workers and the
public?
A. Begin removing exterior walls to improve access
B. Determine the salvage value of structural materials
C. Perform a thorough engineering survey to identify structural
conditions, hazards, and the demolition sequence
D. Remove all windows and doors before inspecting the structure
C. Perform a thorough engineering survey to identify structural
conditions, hazards, and the demolition sequence
Rationale: A competent engineering survey should identify the building's
construction, structural condition, potential collapse hazards, utilities,
adjacent structures, and other conditions that could affect the safe
planning and execution of demolition work.
, 2. During the pre-demolition survey of an older building, the
contractor discovers materials suspected of containing asbestos.
What should occur BEFORE demolition disturbs those materials?
A. Wet the materials and demolish the structure immediately
B. Have the suspected materials properly evaluated and handled
according to applicable asbestos requirements
C. Cover the materials with demolition debris
D. Burn the materials to eliminate contamination
B. Have the suspected materials properly evaluated and handled
according to applicable asbestos requirements
Rationale: Suspected asbestos-containing materials require appropriate
identification, assessment, and regulated handling before demolition
activities disturb them and potentially release hazardous fibers into the
air.
3. Why must utilities generally be identified and properly
disconnected, shut off, capped, or otherwise controlled before
demolition begins?
A. To reduce the amount of debris generated
B. To prevent hazards such as electrocution, fire, explosion, flooding, and
uncontrolled releases
C. To make demolition equipment operate faster
D. To eliminate the need for worker training
,B. To prevent hazards such as electrocution, fire, explosion, flooding,
and uncontrolled releases
Rationale: Active electrical, gas, water, steam, and other utility systems
can create severe hazards when damaged during demolition, making
proper utility control essential before structural work begins.
4. A demolition crew is removing a masonry wall adjacent to a public
sidewalk. Which measure is MOST appropriate for protecting
pedestrians?
A. Allow pedestrians to walk beneath the work area if workers wear hard
hats
B. Establish effective barriers and exclusion zones and provide overhead
protection when required
C. Post only a verbal warning at the beginning of each shift
D. Schedule the demolition during normal business hours without
additional controls
B. Establish effective barriers and exclusion zones and provide overhead
protection when required
Rationale: Public protection requires physical controls that prevent
unauthorized persons from entering hazardous areas and protect
against falling debris where exposure is possible.
5. What is the PRIMARY purpose of establishing an exclusion zone
around active demolition operations?
, A. To provide a location for storing employee vehicles
B. To keep unauthorized personnel and the public away from falling
objects, equipment movement, and collapse hazards
C. To increase the amount of available salvage material
D. To eliminate the need for warning signs
B. To keep unauthorized personnel and the public away from falling
objects, equipment movement, and collapse hazards
Rationale: Demolition exclusion zones reduce exposure to unpredictable
hazards, including structural collapse, flying debris, falling materials,
and heavy-equipment operations.
6. Before using an excavator to pull down part of a structure, the
demolition contractor should FIRST confirm that:
A. The excavator has the largest available bucket
B. The operator can see the entire site from the cab
C. The structure can be safely demolished using the planned method and
sequence without exposing workers or equipment to uncontrolled
collapse
D. All debris has been separated for recycling
C. The structure can be safely demolished using the planned method
and sequence without exposing workers or equipment to uncontrolled
collapse
