CO Structural Demolition Contractor
Exam Practice Questions And Correct
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1. In a structural demolition project in Colorado, what is the primary
purpose of conducting a pre-demolition engineering survey before
work begins?
A. To determine the contractor's final profit margin
B. To establish the number of workers required for the project
C. To identify structural conditions, hazards, and potential instability
before demolition begins
D. To determine the final disposal fees for debris
Answer: C.
The pre-demolition engineering survey is intended to identify structural
characteristics, deterioration, unusual construction, hazardous
conditions, and potential collapse hazards so that demolition can be
planned and performed safely.
2. Before beginning structural demolition, which condition should
receive the greatest immediate attention if discovered during the
site survey?
,A. Faded exterior paint
B. Unstable structural members or partially collapsed portions of the
building
C. Minor cracks in interior finishes
D. Outdated office furniture
Answer: B.
Unstable structural components can collapse unexpectedly and
endanger workers and the public, making stabilization and controlled
demolition planning essential before work proceeds.
3. What is the safest general principle for demolishing a multistory
structure?
A. Remove all exterior walls first
B. Demolish the structure in a controlled sequence designed to maintain
stability
C. Begin demolition at the lowest occupied floor regardless of structural
conditions
D. Remove all columns simultaneously to save time
Answer: B.
Structural demolition must follow a planned sequence that prevents
unintended collapse and maintains adequate stability as portions of the
building are removed.
4. Which document should normally identify the planned sequence
and methods for a complex structural demolition operation?
,A. Employee vacation schedule
B. Demolition engineering or work plan
C. Equipment purchase invoice
D. Payroll register
Answer: B.
A demolition engineering or work plan establishes the methods,
sequence, equipment, hazard controls, and responsibilities necessary for
safe execution of the demolition.
5. During demolition, why is an unexpected change in structural
behavior particularly dangerous?
A. It can increase project paperwork
B. It can indicate that remaining structural components are becoming
unstable
C. It always indicates excessive noise
D. It means the debris cannot be recycled
Answer: B.
Unexpected movement, cracking, deflection, vibration, or settlement
can indicate loss of structural stability and should trigger immediate
evaluation and, when necessary, suspension of work.
6. Which utility should be positively identified and appropriately
disconnected or controlled before structural demolition begins?
A. Water, gas, electrical, sewer, and other affected services
B. Only telephone service
, C. Only exterior lighting
D. Only cable television
Answer: A.
All utilities and service connections that could create hazards must be
identified and controlled before demolition to prevent electrical shock,
fire, explosion, flooding, and other incidents.
7. Why is natural gas service particularly hazardous during demolition?
A. Gas lines can produce excessive dust
B. Damaged or improperly isolated gas lines can release combustible gas
C. Gas lines always contain asbestos
D. Gas service prevents concrete from breaking
Answer: B.
A damaged or inadequately isolated gas line can release combustible
gas that may ignite or accumulate in enclosed spaces, creating a serious
fire or explosion hazard.
8. What is the primary purpose of establishing a controlled demolition
exclusion zone?
A. To provide a location for employee parking
B. To prevent unauthorized persons from entering areas exposed to
demolition hazards
C. To store office supplies
D. To reduce administrative costs
Answer: B.
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2027 Q&A| Instant
Download Pdf.
1. In a structural demolition project in Colorado, what is the primary
purpose of conducting a pre-demolition engineering survey before
work begins?
A. To determine the contractor's final profit margin
B. To establish the number of workers required for the project
C. To identify structural conditions, hazards, and potential instability
before demolition begins
D. To determine the final disposal fees for debris
Answer: C.
The pre-demolition engineering survey is intended to identify structural
characteristics, deterioration, unusual construction, hazardous
conditions, and potential collapse hazards so that demolition can be
planned and performed safely.
2. Before beginning structural demolition, which condition should
receive the greatest immediate attention if discovered during the
site survey?
,A. Faded exterior paint
B. Unstable structural members or partially collapsed portions of the
building
C. Minor cracks in interior finishes
D. Outdated office furniture
Answer: B.
Unstable structural components can collapse unexpectedly and
endanger workers and the public, making stabilization and controlled
demolition planning essential before work proceeds.
3. What is the safest general principle for demolishing a multistory
structure?
A. Remove all exterior walls first
B. Demolish the structure in a controlled sequence designed to maintain
stability
C. Begin demolition at the lowest occupied floor regardless of structural
conditions
D. Remove all columns simultaneously to save time
Answer: B.
Structural demolition must follow a planned sequence that prevents
unintended collapse and maintains adequate stability as portions of the
building are removed.
4. Which document should normally identify the planned sequence
and methods for a complex structural demolition operation?
,A. Employee vacation schedule
B. Demolition engineering or work plan
C. Equipment purchase invoice
D. Payroll register
Answer: B.
A demolition engineering or work plan establishes the methods,
sequence, equipment, hazard controls, and responsibilities necessary for
safe execution of the demolition.
5. During demolition, why is an unexpected change in structural
behavior particularly dangerous?
A. It can increase project paperwork
B. It can indicate that remaining structural components are becoming
unstable
C. It always indicates excessive noise
D. It means the debris cannot be recycled
Answer: B.
Unexpected movement, cracking, deflection, vibration, or settlement
can indicate loss of structural stability and should trigger immediate
evaluation and, when necessary, suspension of work.
6. Which utility should be positively identified and appropriately
disconnected or controlled before structural demolition begins?
A. Water, gas, electrical, sewer, and other affected services
B. Only telephone service
, C. Only exterior lighting
D. Only cable television
Answer: A.
All utilities and service connections that could create hazards must be
identified and controlled before demolition to prevent electrical shock,
fire, explosion, flooding, and other incidents.
7. Why is natural gas service particularly hazardous during demolition?
A. Gas lines can produce excessive dust
B. Damaged or improperly isolated gas lines can release combustible gas
C. Gas lines always contain asbestos
D. Gas service prevents concrete from breaking
Answer: B.
A damaged or inadequately isolated gas line can release combustible
gas that may ignite or accumulate in enclosed spaces, creating a serious
fire or explosion hazard.
8. What is the primary purpose of establishing a controlled demolition
exclusion zone?
A. To provide a location for employee parking
B. To prevent unauthorized persons from entering areas exposed to
demolition hazards
C. To store office supplies
D. To reduce administrative costs
Answer: B.
