AR DE Demolition Contractor Exam
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
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1. What is the primary purpose of conducting a pre-demolition
engineering survey?
A. To determine the contractor's profit margin
B. To establish the color of the demolition equipment
C. To evaluate the structure's condition, stability, and potential
hazards
D. To eliminate the need for a demolition plan
Rationale: A pre-demolition engineering survey identifies structural
weaknesses, load-bearing elements, adjacent structures, and
potential collapse hazards. The findings help determine safe
demolition methods, sequencing, temporary supports, and worker
,protection measures. It does not replace the need for a detailed
demolition plan.
2. Before demolition begins, what should be done with electrical, gas,
water, and other utility services?
A. Leave all utilities connected until the building is completely
demolished
B. Identify, locate, and properly disconnect or control them
C. Disconnect only electrical service
D. Allow demolition equipment to sever the utilities during work
Rationale: Utility services must be identified and safely disconnected,
isolated, or otherwise controlled before demolition activities that
could damage them begin. This prevents electrocution, fires,
explosions, flooding, and uncontrolled releases. Any service that must
remain active requires appropriate protection and coordination with
the utility provider.
3. Which document identifies the planned sequence and methods for
taking down a structure?
A. Equipment maintenance log
B. Daily attendance sheet
,C. Demolition plan
D. Material delivery receipt
Rationale: A demolition plan describes how the structure will be
dismantled, including the sequence of operations, equipment,
structural considerations, access routes, and protective measures. A
properly developed plan reduces the risk of premature collapse and
helps coordinate workers, equipment, and debris removal.
4. What is the primary hazard associated with removing structural
columns before supporting beams?
A. Increased paint deterioration
B. Sudden loss of structural support and uncontrolled collapse
C. Excessive water consumption
D. Reduced visibility from sunlight
Rationale: Columns transfer loads from beams and other structural
elements to the foundation. Removing a column prematurely can
cause supported elements to fail or collapse unexpectedly. Structural
members must be removed in a planned sequence that maintains
stability until their loads are safely transferred or the supported
components are dismantled.
, 5. Which agency establishes and enforces workplace safety
regulations for construction workers in the United States?
A. Federal Communications Commission
B. Environmental Protection Agency
C. Occupational Safety and Health Administration (OSHA)
D. Federal Trade Commission
Rationale: OSHA administers federal workplace safety and health
requirements, including construction standards applicable to
demolition work. These requirements address hazards such as falls,
unstable structures, hazardous materials, equipment operation, and
worker exposure. Other agencies may regulate environmental
protection, transportation, and building requirements.
6. What is the principal danger of an uncontrolled structural collapse
during demolition?
A. Increased material storage space
B. Lower fuel consumption
C. Crushing injuries, fatalities, and damage beyond the intended
demolition area
D. Reduced equipment noise
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf
1. What is the primary purpose of conducting a pre-demolition
engineering survey?
A. To determine the contractor's profit margin
B. To establish the color of the demolition equipment
C. To evaluate the structure's condition, stability, and potential
hazards
D. To eliminate the need for a demolition plan
Rationale: A pre-demolition engineering survey identifies structural
weaknesses, load-bearing elements, adjacent structures, and
potential collapse hazards. The findings help determine safe
demolition methods, sequencing, temporary supports, and worker
,protection measures. It does not replace the need for a detailed
demolition plan.
2. Before demolition begins, what should be done with electrical, gas,
water, and other utility services?
A. Leave all utilities connected until the building is completely
demolished
B. Identify, locate, and properly disconnect or control them
C. Disconnect only electrical service
D. Allow demolition equipment to sever the utilities during work
Rationale: Utility services must be identified and safely disconnected,
isolated, or otherwise controlled before demolition activities that
could damage them begin. This prevents electrocution, fires,
explosions, flooding, and uncontrolled releases. Any service that must
remain active requires appropriate protection and coordination with
the utility provider.
3. Which document identifies the planned sequence and methods for
taking down a structure?
A. Equipment maintenance log
B. Daily attendance sheet
,C. Demolition plan
D. Material delivery receipt
Rationale: A demolition plan describes how the structure will be
dismantled, including the sequence of operations, equipment,
structural considerations, access routes, and protective measures. A
properly developed plan reduces the risk of premature collapse and
helps coordinate workers, equipment, and debris removal.
4. What is the primary hazard associated with removing structural
columns before supporting beams?
A. Increased paint deterioration
B. Sudden loss of structural support and uncontrolled collapse
C. Excessive water consumption
D. Reduced visibility from sunlight
Rationale: Columns transfer loads from beams and other structural
elements to the foundation. Removing a column prematurely can
cause supported elements to fail or collapse unexpectedly. Structural
members must be removed in a planned sequence that maintains
stability until their loads are safely transferred or the supported
components are dismantled.
, 5. Which agency establishes and enforces workplace safety
regulations for construction workers in the United States?
A. Federal Communications Commission
B. Environmental Protection Agency
C. Occupational Safety and Health Administration (OSHA)
D. Federal Trade Commission
Rationale: OSHA administers federal workplace safety and health
requirements, including construction standards applicable to
demolition work. These requirements address hazards such as falls,
unstable structures, hazardous materials, equipment operation, and
worker exposure. Other agencies may regulate environmental
protection, transportation, and building requirements.
6. What is the principal danger of an uncontrolled structural collapse
during demolition?
A. Increased material storage space
B. Lower fuel consumption
C. Crushing injuries, fatalities, and damage beyond the intended
demolition area
D. Reduced equipment noise
