468_PA_PH 468 - PENNSYLVANIA (PHILADELPHIA) DEMOLITION CLASS B
PRACTICE EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS EXPLANATION Q&A INSTANT DOWNLOAD PDF.
150 QUESTIONS
TABLE OF CONTENTS
# TOPIC
1 Analyze complex demolition scenarios to determine appropriate safety and regulatory responses
2 Evaluate engineering and administrative controls for hazard mitigation in demolition
3 Synthesize federal, state, and local regulations governing demolition operations
4 Apply emergency response and crisis management principles to demolition incidents
5 468_PA_PH 468
6 Pennsylvania
7 Philadelphia
8 Demolition Class B Practice Exam Questions And Correct Answers
9 Verified Answers
10 Plus Explanation Q&A Instant Download Pdf.
11 Foundations of Demolition Safety and Regulatory Compliance (Pennsylvania / Philadelphia)
12 Applied Demolition Safety and Regulatory Compliance (Pennsylvania / Philadelphia)
13 Advanced Demolition Safety and Regulatory Compliance (Pennsylvania / Philadelphia)
14 Demolition Safety and Regulatory Compliance (Pennsylvania / Philadelphia) Review
Page 1
,Q1 ANALYZE COMPLEX DEMOLITION SCENARIOS TO DETERMINE APPROPRIATE SAFETY
AND REGULATORY RESPONSES
During a Class B demolition of a multi-story structure, an unexpected void is
discovered beneath a concrete slab. The project engineer suspects a former
underground storage tank. What is the FIRST required action per Pennsylvania
regulations before proceeding with demolition in that area?
A. Notify the Pennsylvania Department of Environmental Protection (DEP) and conduct a
subsurface investigation. CORRECT
B. Proceed with caution, using equipment with extended reach to avoid direct contact.
C. Backfill the void with inert material to stabilize the ground.
D. Isolate the area and consult the local fire department for explosive hazards.
RATIONALE: Pennsylvania regulations require that any suspected underground storage tank or
environmental hazard be reported to the DEP and investigated before demolition continues. This
ensures proper handling of potential contamination or explosion risks. Proceeding, backfilling, or
merely consulting fire department do not address regulatory notification and assessment
requirements.
Q2 ANALYZE COMPLEX DEMOLITION SCENARIOS TO DETERMINE APPROPRIATE SAFETY
AND REGULATORY RESPONSES
A demolition contractor plans to use a crane to pull a steel beam from a partially
collapsed structure. The beam is connected to other structural members. What is
the most critical engineering consideration to prevent progressive collapse?
A. Ensure the crane's load capacity is sufficient for the beam's weight.
B. Use a tagline to control the beam's movement during pulling.
C. Determine the beam's load path and sever all connections before pulling. CORRECT
D. Position all workers outside the fall zone.
RATIONALE: Pulling a beam without severing its connections can transfer unintended loads to
other structural elements, causing progressive collapse. The critical consideration is to analyze
the structural load path and ensure the beam is free from all connections before pulling. Crane
capacity, taglines, and worker positioning are important but secondary to preventing structural
failure.
Page 2
,Q3 ANALYZE COMPLEX DEMOLITION SCENARIOS TO DETERMINE APPROPRIATE SAFETY
AND REGULATORY RESPONSES
A Class B demolition project generates significant amounts of concrete dust. The
site safety officer is selecting respiratory protection for workers. Which
combination of controls is most effective in reducing silica exposure to below
OSHA's PEL?
A. Water suppression and N95 respirators
B. Local exhaust ventilation and half-face elastomeric respirators with P100 filters CORRECT
C. Administrative controls (rotation) and surgical masks
D. General dilution ventilation and disposable dust masks
RATIONALE: OSHA's silica standard requires engineering controls (such as local exhaust
ventilation or wet methods) as the primary means of reducing exposure, with respirators as
supplementary controls. Local exhaust ventilation captures dust at the source, and P100 filters
provide high-efficiency particulate protection. Water suppression and N95s may be insufficient for
high-exposure tasks, and surgical masks or dust masks are not effective against silica.
Q4 ANALYZE COMPLEX DEMOLITION SCENARIOS TO DETERMINE APPROPRIATE SAFETY
AND REGULATORY RESPONSES
A demolition project falls under the Philadelphia Code's Demolition Permit
requirements. Which condition mandates a separate permit for the demolition of a
structure that is adjacent to a public right-of-way?
A. The structure is more than 50 years old.
B. The structure is more than 40 feet in height.
C. The structure is within 10 feet of the right-of-way. CORRECT
D. The structure is occupied at the time of demolition.
RATIONALE: Philadelphia regulations require a separate Demolition Permit for structures
adjacent to public rights-of-way to ensure additional safety measures for public protection. The
proximity (within 10 feet) triggers the need for enhanced review, including a pre-demolition plan
and possibly a professional engineer's approval. Age, height, or occupancy do not solely trigger
this specific permit requirement.
Page 3
, Q5 ANALYZE COMPLEX DEMOLITION SCENARIOS TO DETERMINE APPROPRIATE SAFETY
AND REGULATORY RESPONSES
During a demolition, a gas line is accidentally struck, resulting in a leak. The site
supervisor must implement emergency procedures. Which sequence of actions is
most appropriate?
A. Evacuate the area, call the gas utility, and eliminate all ignition sources. CORRECT
B. Attempt to stop the leak by closing the valve, then call the utility.
C. Use water spray to disperse the gas, then continue work if the leak is small.
D. Notify all workers to avoid sparks, but continue demolition to minimize downtime.
RATIONALE: In a gas leak emergency, the first priority is life safety: evacuate the area, remove
ignition sources, and notify the utility to shut off the gas. Attempting to control the leak without
proper training and equipment is dangerous. Continuing work or using water (which does not
disperse gas effectively) is unsafe and violates standard emergency protocols.
Q6 ANALYZE COMPLEX DEMOLITION SCENARIOS TO DETERMINE APPROPRIATE SAFETY
AND REGULATORY RESPONSES
The demolition of a building in Philadelphia involves the removal of
asbestos-containing material (ACM). Which document is NOT required to be
submitted to the Pennsylvania Department of Labor & Industry prior to
commencement?
A. Asbestos abatement permit CORRECT
B. Notification of demolition form
C. Asbestos survey report
D. Air monitoring plan
RATIONALE: Pennsylvania requires submission of a demolition notification (including asbestos
survey) to the DEP and L&I before demolition. An asbestos abatement permit is not a separate
document; instead, abatement is conducted under the notification and work practices. Air
monitoring plans are required during abatement, but not as a pre-demolition submission.
Page 4
PRACTICE EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS EXPLANATION Q&A INSTANT DOWNLOAD PDF.
150 QUESTIONS
TABLE OF CONTENTS
# TOPIC
1 Analyze complex demolition scenarios to determine appropriate safety and regulatory responses
2 Evaluate engineering and administrative controls for hazard mitigation in demolition
3 Synthesize federal, state, and local regulations governing demolition operations
4 Apply emergency response and crisis management principles to demolition incidents
5 468_PA_PH 468
6 Pennsylvania
7 Philadelphia
8 Demolition Class B Practice Exam Questions And Correct Answers
9 Verified Answers
10 Plus Explanation Q&A Instant Download Pdf.
11 Foundations of Demolition Safety and Regulatory Compliance (Pennsylvania / Philadelphia)
12 Applied Demolition Safety and Regulatory Compliance (Pennsylvania / Philadelphia)
13 Advanced Demolition Safety and Regulatory Compliance (Pennsylvania / Philadelphia)
14 Demolition Safety and Regulatory Compliance (Pennsylvania / Philadelphia) Review
Page 1
,Q1 ANALYZE COMPLEX DEMOLITION SCENARIOS TO DETERMINE APPROPRIATE SAFETY
AND REGULATORY RESPONSES
During a Class B demolition of a multi-story structure, an unexpected void is
discovered beneath a concrete slab. The project engineer suspects a former
underground storage tank. What is the FIRST required action per Pennsylvania
regulations before proceeding with demolition in that area?
A. Notify the Pennsylvania Department of Environmental Protection (DEP) and conduct a
subsurface investigation. CORRECT
B. Proceed with caution, using equipment with extended reach to avoid direct contact.
C. Backfill the void with inert material to stabilize the ground.
D. Isolate the area and consult the local fire department for explosive hazards.
RATIONALE: Pennsylvania regulations require that any suspected underground storage tank or
environmental hazard be reported to the DEP and investigated before demolition continues. This
ensures proper handling of potential contamination or explosion risks. Proceeding, backfilling, or
merely consulting fire department do not address regulatory notification and assessment
requirements.
Q2 ANALYZE COMPLEX DEMOLITION SCENARIOS TO DETERMINE APPROPRIATE SAFETY
AND REGULATORY RESPONSES
A demolition contractor plans to use a crane to pull a steel beam from a partially
collapsed structure. The beam is connected to other structural members. What is
the most critical engineering consideration to prevent progressive collapse?
A. Ensure the crane's load capacity is sufficient for the beam's weight.
B. Use a tagline to control the beam's movement during pulling.
C. Determine the beam's load path and sever all connections before pulling. CORRECT
D. Position all workers outside the fall zone.
RATIONALE: Pulling a beam without severing its connections can transfer unintended loads to
other structural elements, causing progressive collapse. The critical consideration is to analyze
the structural load path and ensure the beam is free from all connections before pulling. Crane
capacity, taglines, and worker positioning are important but secondary to preventing structural
failure.
Page 2
,Q3 ANALYZE COMPLEX DEMOLITION SCENARIOS TO DETERMINE APPROPRIATE SAFETY
AND REGULATORY RESPONSES
A Class B demolition project generates significant amounts of concrete dust. The
site safety officer is selecting respiratory protection for workers. Which
combination of controls is most effective in reducing silica exposure to below
OSHA's PEL?
A. Water suppression and N95 respirators
B. Local exhaust ventilation and half-face elastomeric respirators with P100 filters CORRECT
C. Administrative controls (rotation) and surgical masks
D. General dilution ventilation and disposable dust masks
RATIONALE: OSHA's silica standard requires engineering controls (such as local exhaust
ventilation or wet methods) as the primary means of reducing exposure, with respirators as
supplementary controls. Local exhaust ventilation captures dust at the source, and P100 filters
provide high-efficiency particulate protection. Water suppression and N95s may be insufficient for
high-exposure tasks, and surgical masks or dust masks are not effective against silica.
Q4 ANALYZE COMPLEX DEMOLITION SCENARIOS TO DETERMINE APPROPRIATE SAFETY
AND REGULATORY RESPONSES
A demolition project falls under the Philadelphia Code's Demolition Permit
requirements. Which condition mandates a separate permit for the demolition of a
structure that is adjacent to a public right-of-way?
A. The structure is more than 50 years old.
B. The structure is more than 40 feet in height.
C. The structure is within 10 feet of the right-of-way. CORRECT
D. The structure is occupied at the time of demolition.
RATIONALE: Philadelphia regulations require a separate Demolition Permit for structures
adjacent to public rights-of-way to ensure additional safety measures for public protection. The
proximity (within 10 feet) triggers the need for enhanced review, including a pre-demolition plan
and possibly a professional engineer's approval. Age, height, or occupancy do not solely trigger
this specific permit requirement.
Page 3
, Q5 ANALYZE COMPLEX DEMOLITION SCENARIOS TO DETERMINE APPROPRIATE SAFETY
AND REGULATORY RESPONSES
During a demolition, a gas line is accidentally struck, resulting in a leak. The site
supervisor must implement emergency procedures. Which sequence of actions is
most appropriate?
A. Evacuate the area, call the gas utility, and eliminate all ignition sources. CORRECT
B. Attempt to stop the leak by closing the valve, then call the utility.
C. Use water spray to disperse the gas, then continue work if the leak is small.
D. Notify all workers to avoid sparks, but continue demolition to minimize downtime.
RATIONALE: In a gas leak emergency, the first priority is life safety: evacuate the area, remove
ignition sources, and notify the utility to shut off the gas. Attempting to control the leak without
proper training and equipment is dangerous. Continuing work or using water (which does not
disperse gas effectively) is unsafe and violates standard emergency protocols.
Q6 ANALYZE COMPLEX DEMOLITION SCENARIOS TO DETERMINE APPROPRIATE SAFETY
AND REGULATORY RESPONSES
The demolition of a building in Philadelphia involves the removal of
asbestos-containing material (ACM). Which document is NOT required to be
submitted to the Pennsylvania Department of Labor & Industry prior to
commencement?
A. Asbestos abatement permit CORRECT
B. Notification of demolition form
C. Asbestos survey report
D. Air monitoring plan
RATIONALE: Pennsylvania requires submission of a demolition notification (including asbestos
survey) to the DEP and L&I before demolition. An asbestos abatement permit is not a separate
document; instead, abatement is conducted under the notification and work practices. Air
monitoring plans are required during abatement, but not as a pre-demolition submission.
Page 4
