Indiana Demolition Contractor Exam
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which factor is MOST critical when developing a demolition sequence plan
for a multi-story building?
A. Cost of disposal
B. Structural stability during progressive removal
C. Color coding of debris
D. Number of workers available
Rationale: Structural stability must be maintained throughout demolition to
prevent unintended collapse. A demolition sequence plan prioritizes load paths,
bracing, and controlled removal to ensure safety. While cost, manpower, and
logistics matter, they are secondary to maintaining building integrity during
progressive dismantling.
2. Before beginning demolition, which utility must ALWAYS be verified as
disconnected first?
A. Telephone lines
B. Natural gas supply
C. Internet service
D. Stormwater drainage
Rationale: Natural gas poses an immediate explosion and fire hazard if not
properly shut off and verified. Gas leaks during demolition are among the most
,dangerous site incidents. Other utilities may be hazardous but do not carry the
same explosion risk as pressurized gas systems.
3. What is the primary purpose of a pre-demolition engineering survey?
A. To estimate project profit
B. To assign worker shifts
C. To identify structural hazards and load-bearing elements
D. To determine recycling value
Rationale: A pre-demolition engineering survey identifies structural systems,
hazardous materials, and load-bearing components. This ensures the demolition
is planned safely. Financial and scheduling considerations are secondary to
hazard identification and structural understanding.
4. Which demolition method is MOST suitable for a dense urban
environment?
A. Uncontrolled collapse
B. Fire-based demolition
C. Bulk explosive demolition
D. Piece-by-piece mechanical dismantling
Rationale: In urban environments, controlled mechanical dismantling reduces
risk to surrounding structures and the public. Explosives or uncontrolled
methods are unsafe due to proximity constraints.
5. OSHA requires a competent person on a demolition site primarily to:
A. Handle payroll
B. Operate cranes
C. Identify and correct hazardous conditions
D. Approve invoices
,Rationale: A competent person is trained to identify hazards such as structural
instability, falling objects, and unsafe conditions, and has authority to correct
them immediately.
6. Which structural element typically carries the MAIN vertical load in a steel
frame building?
A. Curtain wall
B. Roofing membrane
C. Columns
D. Partition walls
Rationale: Columns transfer building loads to the foundation. Curtain walls and
partitions are non-load-bearing, and roofing membranes provide weather
protection only.
7. What is the FIRST step when encountering suspected asbestos during
demolition?
A. Remove it immediately
B. Wet it and continue work
C. Stop work and initiate hazard assessment
D. Cover it with plastic and proceed
Rationale: Suspected asbestos must halt work immediately until proper testing
and abatement procedures are performed by licensed professionals to prevent
exposure.
8. Which equipment is MOST appropriate for selective interior demolition?
A. Blasting charges
B. Dragline excavator
, C. Hydraulic hand tools (e.g., breakers, shears)
D. Tunnel boring machine
Rationale: Hydraulic hand tools allow controlled, precise removal of interior
materials without damaging structural elements, making them ideal for
selective demolition.
9. What is the main hazard of working on partially demolished floors?
A. Excess lighting
B. Reduced noise
C. Structural collapse due to uneven load distribution
D. Increased ventilation
Rationale: Uneven loading from partial removal can destabilize floors, causing
sudden collapse. This is one of the most serious demolition hazards.
10.Which document defines safe demolition procedures on a job site?
A. Material invoice
B. Employee handbook
C. Building warranty
D. Demolition work plan
Rationale: The demolition work plan outlines step-by-step procedures, safety
controls, sequencing, and hazard mitigation specific to the project.
11.What is the safest method for removing a non-load-bearing wall?
A. Explosive removal
B. Crane pull-out
C. Manual or mechanical dismantling from top to bottom
D. Jackhammering from the base upward
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which factor is MOST critical when developing a demolition sequence plan
for a multi-story building?
A. Cost of disposal
B. Structural stability during progressive removal
C. Color coding of debris
D. Number of workers available
Rationale: Structural stability must be maintained throughout demolition to
prevent unintended collapse. A demolition sequence plan prioritizes load paths,
bracing, and controlled removal to ensure safety. While cost, manpower, and
logistics matter, they are secondary to maintaining building integrity during
progressive dismantling.
2. Before beginning demolition, which utility must ALWAYS be verified as
disconnected first?
A. Telephone lines
B. Natural gas supply
C. Internet service
D. Stormwater drainage
Rationale: Natural gas poses an immediate explosion and fire hazard if not
properly shut off and verified. Gas leaks during demolition are among the most
,dangerous site incidents. Other utilities may be hazardous but do not carry the
same explosion risk as pressurized gas systems.
3. What is the primary purpose of a pre-demolition engineering survey?
A. To estimate project profit
B. To assign worker shifts
C. To identify structural hazards and load-bearing elements
D. To determine recycling value
Rationale: A pre-demolition engineering survey identifies structural systems,
hazardous materials, and load-bearing components. This ensures the demolition
is planned safely. Financial and scheduling considerations are secondary to
hazard identification and structural understanding.
4. Which demolition method is MOST suitable for a dense urban
environment?
A. Uncontrolled collapse
B. Fire-based demolition
C. Bulk explosive demolition
D. Piece-by-piece mechanical dismantling
Rationale: In urban environments, controlled mechanical dismantling reduces
risk to surrounding structures and the public. Explosives or uncontrolled
methods are unsafe due to proximity constraints.
5. OSHA requires a competent person on a demolition site primarily to:
A. Handle payroll
B. Operate cranes
C. Identify and correct hazardous conditions
D. Approve invoices
,Rationale: A competent person is trained to identify hazards such as structural
instability, falling objects, and unsafe conditions, and has authority to correct
them immediately.
6. Which structural element typically carries the MAIN vertical load in a steel
frame building?
A. Curtain wall
B. Roofing membrane
C. Columns
D. Partition walls
Rationale: Columns transfer building loads to the foundation. Curtain walls and
partitions are non-load-bearing, and roofing membranes provide weather
protection only.
7. What is the FIRST step when encountering suspected asbestos during
demolition?
A. Remove it immediately
B. Wet it and continue work
C. Stop work and initiate hazard assessment
D. Cover it with plastic and proceed
Rationale: Suspected asbestos must halt work immediately until proper testing
and abatement procedures are performed by licensed professionals to prevent
exposure.
8. Which equipment is MOST appropriate for selective interior demolition?
A. Blasting charges
B. Dragline excavator
, C. Hydraulic hand tools (e.g., breakers, shears)
D. Tunnel boring machine
Rationale: Hydraulic hand tools allow controlled, precise removal of interior
materials without damaging structural elements, making them ideal for
selective demolition.
9. What is the main hazard of working on partially demolished floors?
A. Excess lighting
B. Reduced noise
C. Structural collapse due to uneven load distribution
D. Increased ventilation
Rationale: Uneven loading from partial removal can destabilize floors, causing
sudden collapse. This is one of the most serious demolition hazards.
10.Which document defines safe demolition procedures on a job site?
A. Material invoice
B. Employee handbook
C. Building warranty
D. Demolition work plan
Rationale: The demolition work plan outlines step-by-step procedures, safety
controls, sequencing, and hazard mitigation specific to the project.
11.What is the safest method for removing a non-load-bearing wall?
A. Explosive removal
B. Crane pull-out
C. Manual or mechanical dismantling from top to bottom
D. Jackhammering from the base upward
