CNMI Demolition Contractor Licensing
Exam Practice Questions
Q1. What is the primary objective of conducting an
engineering survey prior to beginning any demolition
operations?
A) To estimate the cost of debris removal
B) To determine the condition of the structure and the method
of demolition
C) To schedule the delivery of heavy machinery
D) To identify potential sources of drinking water
Correct Answer: B
Rationale: An engineering survey assesses the building's
structural integrity and framing, identifies hazards (like high-
strength concrete or pre-stressed members), and dictates the
safest demolition method to prevent uncontrolled collapse.
Q2. According to OSHA standards, which of the following must
be completed before any mechanical demolition begins?
A) The installation of temporary lighting
B) The complete removal of all salvageable materials
C) The disconnecting and capping of all utility services (gas,
electric, water, steam)
D) The final payment to the project owner
Correct Answer: C
Rationale: All utility lines must be located, disconnected, and
, capped before demolition to prevent gas leaks, electrocution,
explosions, or flooding.
Q3. A "competent person" is defined by OSHA as someone
who can identify existing and predictable hazards and has the
authority to take corrective measures. In demolition, the
competent person is required to perform which specific duty?
A) Operating the heavy machinery for the duration of the
project
B) Conducting daily inspections of the demolition zone to
ensure safety
C) Transporting hazardous waste off-site
D) Designing the recycling layout for concrete debris
Correct Answer: B
Rationale: A competent person is legally required to inspect the
worksite daily for evidence of structural weakening or safety
breaches.
Q4. What is the mandatory sequence for removing interior
walls and floors in a multi-story building demolition?
A) Bottom-up; starting from the ground floor
B) Top-down; starting from the roof or top floor
C) Center-out; starting from the elevator shaft
D) Perimeter-first; starting from the outside walls
Correct Answer: B
Rationale: Structural loads and debris must be removed from
the top down to prevent the weight of the upper floors from
collapsing the lower supporting structure.
Exam Practice Questions
Q1. What is the primary objective of conducting an
engineering survey prior to beginning any demolition
operations?
A) To estimate the cost of debris removal
B) To determine the condition of the structure and the method
of demolition
C) To schedule the delivery of heavy machinery
D) To identify potential sources of drinking water
Correct Answer: B
Rationale: An engineering survey assesses the building's
structural integrity and framing, identifies hazards (like high-
strength concrete or pre-stressed members), and dictates the
safest demolition method to prevent uncontrolled collapse.
Q2. According to OSHA standards, which of the following must
be completed before any mechanical demolition begins?
A) The installation of temporary lighting
B) The complete removal of all salvageable materials
C) The disconnecting and capping of all utility services (gas,
electric, water, steam)
D) The final payment to the project owner
Correct Answer: C
Rationale: All utility lines must be located, disconnected, and
, capped before demolition to prevent gas leaks, electrocution,
explosions, or flooding.
Q3. A "competent person" is defined by OSHA as someone
who can identify existing and predictable hazards and has the
authority to take corrective measures. In demolition, the
competent person is required to perform which specific duty?
A) Operating the heavy machinery for the duration of the
project
B) Conducting daily inspections of the demolition zone to
ensure safety
C) Transporting hazardous waste off-site
D) Designing the recycling layout for concrete debris
Correct Answer: B
Rationale: A competent person is legally required to inspect the
worksite daily for evidence of structural weakening or safety
breaches.
Q4. What is the mandatory sequence for removing interior
walls and floors in a multi-story building demolition?
A) Bottom-up; starting from the ground floor
B) Top-down; starting from the roof or top floor
C) Center-out; starting from the elevator shaft
D) Perimeter-first; starting from the outside walls
Correct Answer: B
Rationale: Structural loads and debris must be removed from
the top down to prevent the weight of the upper floors from
collapsing the lower supporting structure.
