AR BDG Building Demolition Exam
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 resale value of salvage materials
B. To establish the demolition crew's daily work schedule
C. To identify structural conditions, hazards, and appropriate
demolition methods
D. To determine the final landscaping requirements
Correct Answer: C. To identify structural conditions, hazards, and
appropriate demolition methods
Rationale: A pre-demolition engineering survey evaluates the building's
structural integrity, construction materials, existing damage, and
,potential hazards. It helps determine safe demolition methods,
necessary temporary supports, and appropriate sequencing. This
assessment is essential for protecting workers, nearby structures, and
the public.
2. Before beginning demolition, what should a contractor do
regarding existing utility services?
A. Assume all utilities are disconnected if the building is vacant
B. Disconnect, isolate, or otherwise safely control utilities through the
appropriate service providers
C. Remove electrical wiring while the building remains energized
D. Begin demolition and disconnect utilities as they become exposed
Correct Answer: B. Disconnect, isolate, or otherwise safely control
utilities through the appropriate service providers
Rationale: Electrical, gas, water, sewer, and communication services
must be identified and appropriately controlled before demolition
begins. Coordination with utility providers and verification of
disconnection or isolation reduce the risks of electrocution, fire,
explosion, flooding, and unexpected service interruptions.
3. Which document typically establishes the approved scope,
sequence, and methods of a demolition project?
,A. Employee attendance sheet
B. Equipment maintenance log
C. Material delivery receipt
D. Demolition plan
Correct Answer: D. Demolition plan
Rationale: A demolition plan describes the work scope, demolition
sequence, methods, equipment, safety measures, and handling of
materials. Depending on the project and jurisdiction, it may also
address temporary supports, environmental controls, utility
disconnections, and protection of adjacent properties.
4. What is the main purpose of identifying load-bearing walls before
demolition?
A. To prevent unintended structural collapse
B. To improve the appearance of exposed masonry
C. To reduce the number of waste containers required
D. To determine the color of replacement finishes
Correct Answer: A. To prevent unintended structural collapse
Rationale: Load-bearing walls support loads from floors, roofs, or other
structural elements. Removing them without an engineered sequence or
, adequate temporary support can cause partial or progressive collapse.
Identifying the building's load paths helps the contractor determine
which components must remain until supported loads have been safely
transferred.
5. What is the safest general approach to demolishing a multi-story
building?
A. Remove the ground-floor columns first
B. Remove exterior walls randomly to improve access
C. Follow an engineered demolition sequence that maintains stability as
the structure is dismantled
D. Remove all interior supports before inspecting the roof
Correct Answer: C. Follow an engineered demolition sequence that
maintains stability as the structure is dismantled
Rationale: Multi-story demolition requires a controlled sequence that
accounts for load paths, lateral stability, debris loading, and the
behavior of remaining structural elements. An engineered approach
prevents the premature loss of support and reduces the risk of
uncontrolled collapse.
6. Which hazard is particularly associated with older buildings
containing asbestos?
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 resale value of salvage materials
B. To establish the demolition crew's daily work schedule
C. To identify structural conditions, hazards, and appropriate
demolition methods
D. To determine the final landscaping requirements
Correct Answer: C. To identify structural conditions, hazards, and
appropriate demolition methods
Rationale: A pre-demolition engineering survey evaluates the building's
structural integrity, construction materials, existing damage, and
,potential hazards. It helps determine safe demolition methods,
necessary temporary supports, and appropriate sequencing. This
assessment is essential for protecting workers, nearby structures, and
the public.
2. Before beginning demolition, what should a contractor do
regarding existing utility services?
A. Assume all utilities are disconnected if the building is vacant
B. Disconnect, isolate, or otherwise safely control utilities through the
appropriate service providers
C. Remove electrical wiring while the building remains energized
D. Begin demolition and disconnect utilities as they become exposed
Correct Answer: B. Disconnect, isolate, or otherwise safely control
utilities through the appropriate service providers
Rationale: Electrical, gas, water, sewer, and communication services
must be identified and appropriately controlled before demolition
begins. Coordination with utility providers and verification of
disconnection or isolation reduce the risks of electrocution, fire,
explosion, flooding, and unexpected service interruptions.
3. Which document typically establishes the approved scope,
sequence, and methods of a demolition project?
,A. Employee attendance sheet
B. Equipment maintenance log
C. Material delivery receipt
D. Demolition plan
Correct Answer: D. Demolition plan
Rationale: A demolition plan describes the work scope, demolition
sequence, methods, equipment, safety measures, and handling of
materials. Depending on the project and jurisdiction, it may also
address temporary supports, environmental controls, utility
disconnections, and protection of adjacent properties.
4. What is the main purpose of identifying load-bearing walls before
demolition?
A. To prevent unintended structural collapse
B. To improve the appearance of exposed masonry
C. To reduce the number of waste containers required
D. To determine the color of replacement finishes
Correct Answer: A. To prevent unintended structural collapse
Rationale: Load-bearing walls support loads from floors, roofs, or other
structural elements. Removing them without an engineered sequence or
, adequate temporary support can cause partial or progressive collapse.
Identifying the building's load paths helps the contractor determine
which components must remain until supported loads have been safely
transferred.
5. What is the safest general approach to demolishing a multi-story
building?
A. Remove the ground-floor columns first
B. Remove exterior walls randomly to improve access
C. Follow an engineered demolition sequence that maintains stability as
the structure is dismantled
D. Remove all interior supports before inspecting the roof
Correct Answer: C. Follow an engineered demolition sequence that
maintains stability as the structure is dismantled
Rationale: Multi-story demolition requires a controlled sequence that
accounts for load paths, lateral stability, debris loading, and the
behavior of remaining structural elements. An engineered approach
prevents the premature loss of support and reduces the risk of
uncontrolled collapse.
6. Which hazard is particularly associated with older buildings
containing asbestos?
