STSC (Safety Trained Supervisor Construction) — Questions and Answers

Question 1: When multiple authorized workers are simultaneously performing maintenance on the same piece of equipment, OSHA requires:

Each authorized worker to apply their own personal lock to the energy-isolating device or hasp (Correct answer)
A single group tagout tag signed by all workers
Verbal confirmation from the supervisor that the equipment is safe
Only the crew leader to apply a single lock on behalf of the group

Correct answer: Each authorized worker to apply their own personal lock to the energy-isolating device or hasp

OSHA group lockout procedures require each authorized employee to apply their own personal lock. No worker's safety should depend on another person's lock — each individual must be able to verify their own protection.

Question 2: What type of fall protection is required for workers performing leading edge work where traditional fall protection methods are infeasible?

Warning line systems set back 6 feet from the edge
Only fall arrest systems are acceptable for leading edge work
A combination of warning lines, safety monitors, or approved alternative fall protection methods (Correct answer)
No fall protection is required if work is performed quickly

Correct answer: A combination of warning lines, safety monitors, or approved alternative fall protection methods

For leading edge work where conventional systems are infeasible, a combination approach using warning lines and other approved methods may be used.

Question 3: OSHA's standard for respirable crystalline silica in construction (1926.1153) established a new, lower Permissible Exposure Limit (PEL). What is the 8-hour time-weighted average (TWA) PEL for respirable crystalline silica?

50 micrograms per cubic meter (µg/m³) (Correct answer)
25 micrograms per cubic meter (µg/m³)
100 micrograms per cubic meter (µg/m³)
250 micrograms per cubic meter (µg/m³)

Correct answer: 50 micrograms per cubic meter (µg/m³)

The current OSHA standard, 1926.1153, significantly reduced the Permissible Exposure Limit (PEL) for respirable crystalline silica to 50 micrograms per cubic meter of air (50 µg/m³), averaged over an 8-hour shift. The standard also established an action level of 25 µg/m³.

Question 4: Under OSHA 29 CFR 1904, a work-related injury or illness is recordable on the OSHA 300 log if it results in:

Any first aid treatment
Any worker complaint of pain
Any visit to a medical clinic
Days away from work, restricted work, medical treatment beyond first aid, loss of consciousness, or diagnosis of a significant illness (Correct answer)

Correct answer: Days away from work, restricted work, medical treatment beyond first aid, loss of consciousness, or diagnosis of a significant illness

OSHA specifies recordability criteria based on outcome severity — minor first aid cases are not recordable.

Question 5: Under OSHA construction standards, when must an employee be retrained in emergency procedures?

Retraining is optional if the original training was comprehensive
Every 5 years regardless of any changes
Only when there is a change in their job assignment
When there is a change in their job assignment, a change in emergency procedures, or when evaluation indicates inadequate knowledge (Correct answer)

Correct answer: When there is a change in their job assignment, a change in emergency procedures, or when evaluation indicates inadequate knowledge

OSHA requires retraining when there is a change in job assignment, a change in emergency procedures, or when evaluation shows the employee does not have sufficient knowledge of emergency procedures.

Question 6: When erecting or dismantling scaffolding, workers must be protected from falls by a competent person who:

Holds a ladder for each worker as they climb
Calls OSHA before each erection or dismantling activity
Stands at the base and shouts warnings
Determines the feasibility and safety of providing fall protection and implements it accordingly (Correct answer)

Correct answer: Determines the feasibility and safety of providing fall protection and implements it accordingly

A competent person must evaluate the feasibility of fall protection during erection/dismantling and implement appropriate measures based on that evaluation.

Question 7: What rescue method is preferred for confined space rescue operations?

Entry rescue by a trained rescue team
Non-entry retrieval using a retrieval system (Correct answer)
Waiting for specialized hazmat team
Calling 911 for fire department assistance

Correct answer: Non-entry retrieval using a retrieval system

Non-entry retrieval is the preferred method as it eliminates the need for rescuers to enter the hazardous space.

Question 8: Which of the following is the most important responsibility of a safety supervisor on a construction site?

Monitoring the progress of construction work
Delegating safety training tasks to workers
Ensuring that safety rules and procedures are followed at all times (Correct answer)
Organizing social events for the workers

Correct answer: Ensuring that safety rules and procedures are followed at all times

A safety supervisor's most important responsibility is to ensure consistent adherence to established safety rules and procedures. This involves constant vigilance, active supervision, and immediate intervention when deviations occur. By upholding these standards, the supervisor directly contributes to creating a safe working environment and preventing accidents.

Question 9: A worker's right to know about hazardous chemicals in the workplace is protected under which law/standard?

OSHA's Personal Protective Equipment Standard
OSHA's Hazard Communication Standard (Right to Know/HCS) (Correct answer)
EPA's Clean Air Act
RCRA Hazardous Waste Management rules

Correct answer: OSHA's Hazard Communication Standard (Right to Know/HCS)

OSHA's HCS (29 CFR 1910.1200), often called the 'Right to Know' law, ensures workers receive information about chemical hazards.

Question 10: What is the maximum slope allowed for a scaffold access ladder?

75 degrees from horizontal (Correct answer)
Scaffold ladders must be vertical (90 degrees)
70 degrees from horizontal
80 degrees from horizontal

Correct answer: 75 degrees from horizontal

OSHA requires scaffold access ladders to be pitched no more than 75 degrees from horizontal (or 15 degrees from vertical).

Question 11: During a scaffold inspection after a storm, you notice one upright has settled approximately 1 inch into soft soil. What is the correct action?

Reduce the load on that side of the scaffold by half
Add a mudsill under the affected upright only
Remove all workers immediately and re-level and re-plumb before resuming work (Correct answer)
Continue use since 1 inch is within tolerance

Correct answer: Remove all workers immediately and re-level and re-plumb before resuming work

Any settlement that causes the scaffold to go out of plumb requires immediate evacuation and correction before work resumes.

Question 12: A 'recognized hazard' under OSHA's General Duty Clause includes:

Only hazards listed in OSHA 29 CFR 1926
Hazards known to the employer or the construction industry as a whole, even without a specific OSHA standard (Correct answer)
Only hazards cited in previous OSHA inspections
Hazards identified only by a safety consultant

Correct answer: Hazards known to the employer or the construction industry as a whole, even without a specific OSHA standard

Recognized hazards include those known by the specific employer or commonly known throughout the industry, regardless of whether an OSHA standard covers them.

Question 13: What information should be readily available at a construction site for emergency responders?

Payroll records and timesheets
Equipment purchase orders
Employee personnel files
Site layout, hazardous materials locations, and utility shutoff points (Correct answer)

Correct answer: Site layout, hazardous materials locations, and utility shutoff points

Emergency responders need site-specific information including layout, hazmat locations, and utility controls to respond safely and effectively.

Question 14: During a severe weather emergency on a construction site, workers should NOT:

Remain on scaffolding or elevated structures (Correct answer)
Take cover in a vehicle as a last resort
Seek shelter in a permanent building
Move away from tall cranes and trees

Correct answer: Remain on scaffolding or elevated structures

Elevated structures like scaffolding increase exposure to lightning and high winds during severe weather — workers must descend immediately.

Question 15: What is the minimum clearance distance that must be maintained between a scaffold and an insulated power line of less than 300 volts?

20 feet
3 feet (Correct answer)
10 feet
1 foot

Correct answer: 3 feet

OSHA 1926.451(f)(6) requires a minimum clearance of 3 feet for insulated power lines of less than 300 volts. For uninsulated lines or lines with higher voltages, the clearance distance increases significantly. Maintaining this distance is crucial to prevent electrocution.

Question 16: Continuous forced-air ventilation in a confined space must direct fresh air to:

All areas of the space, especially where workers are present (Correct answer)
The exhaust outlet to remove contaminants
The space entrance only
The highest point of the space

Correct answer: All areas of the space, especially where workers are present

Ventilation must reach all areas where workers are present to ensure acceptable atmospheric conditions throughout.

Question 17: A new construction supervisor has inherited a crew with a poor safety record. What is the MOST important first step in improving safety performance?

Conducting a safety assessment to understand current conditions, attitudes, and barriers to safe work (Correct answer)
Waiting to observe the crew for six months before making any changes
Immediately issuing disciplinary notices to all workers for past violations
Replacing all workers with more safety-conscious personnel

Correct answer: Conducting a safety assessment to understand current conditions, attitudes, and barriers to safe work

Before implementing changes, a new supervisor must understand the current state — existing hazards, crew attitudes, systemic barriers to safe work, and what has been tried before — to develop effective, targeted improvements.

Question 18: Which of the following changes to a scaffold DOES NOT require re-inspection by a competent person before reuse?

Repairing a damaged upright with an identical replacement component
Moving a rolling scaffold to a new location on the same level surface (Correct answer)
Adding a second platform level to an existing scaffold
Exposing the scaffold to high winds exceeding 40 mph

Correct answer: Moving a rolling scaffold to a new location on the same level surface

Rolling a scaffold to a new location on the same level surface does not require re-inspection, though the competent person should verify the new surface conditions.

Question 19: What is the minimum safe approach distance from overhead power lines for construction equipment operating near lines carrying between 50kV and 200kV?

3 feet
15 feet (Correct answer)
10 feet
25 feet

Correct answer: 15 feet

OSHA 29 CFR 1926.1408 requires a minimum 15-foot clearance from overhead lines energized between 50kV and 200kV for equipment operations unless the utility owner has de-energized and visibly grounded the lines.

Question 20: A signal person is required for a crane lift when:

The point of operation is not in full view of the operator (Correct answer)
The load exceeds 50% of the crane's capacity
The lift is being performed at night
The lift involves more than two workers

Correct answer: The point of operation is not in full view of the operator

OSHA 1926.1419(a) requires a signal person when the point of operation is not in full view of the operator, when the operator's view is obstructed in the direction the equipment is traveling, or when either the operator or the person handling the load determines that a signal person is needed. This ensures constant communication and hazard awareness during the lift.

Question 21: What does 'double insulation' on an electric power tool indicate?

The tool has two separate insulation systems so a separate ground is not required (Correct answer)
The tool has two layers of insulation around the power cord only
The tool requires a double-insulated extension cord to operate safely
The tool has twice the voltage protection compared to standard tools

Correct answer: The tool has two separate insulation systems so a separate ground is not required

Double-insulated tools contain two separate insulation barriers between live parts and the user, making a grounding wire unnecessary for safe operation.

Question 22: A competent person observing a trench wall notices vertical cracks running parallel to the trench face and a slight outward bulge in the lower portion of the wall. What do these signs indicate?

The soil can be reclassified to Type A due to cohesiveness
Normal soil settlement — no action needed
Additional shoring can be added while workers continue
Imminent cave-in risk — immediately remove all workers from the trench (Correct answer)

Correct answer: Imminent cave-in risk — immediately remove all workers from the trench

Vertical cracks parallel to the trench face and outward wall bulging are critical warning signs of imminent cave-in. Workers must be immediately removed and no re-entry permitted until the competent person determines it is safe.

Question 23: Two workers are in a heated argument over the proper procedure for erecting a scaffold, creating a distracting and unsafe situation. Which of the following represents the most appropriate first step for the supervisor to de-escalate the conflict?

Side with the worker who has more seniority to end the argument quickly.
Immediately issue a written warning to both workers for unprofessional conduct and fighting on the job.
Order both workers to get back to work immediately and sort it out on their own time.
Separate the workers, instruct them to pause the task, and listen to each person's perspective individually before addressing the procedural question. (Correct answer)

Correct answer: Separate the workers, instruct them to pause the task, and listen to each person's perspective individually before addressing the procedural question.

The immediate priority is to stop the unsafe activity and de-escalate the emotional conflict. Separating the individuals allows them to cool down. Listening to each side individually shows respect and allows the supervisor to gather all necessary information before making a determination about the correct, safe procedure.

Question 24: When communicating safety information to a diverse workforce with varying language proficiency, a supervisor should:

Provide written materials only and rely on workers to seek translation
Conduct safety meetings only in English to encourage language learning
Use technical English terminology to maintain precision
Use visual aids, demonstrations, and interpreters to ensure all workers understand the safety message (Correct answer)

Correct answer: Use visual aids, demonstrations, and interpreters to ensure all workers understand the safety message

Safety communication must overcome language barriers through visual demonstrations, translated materials, and interpreters to ensure all workers understand critical safety information.

Question 25: What type of electrical hazard is created when a worker stands on wet ground and touches a grounded metal structure that has developed an insulation fault, causing current to flow through the worker's body to ground?

Contact voltage (step potential / touch potential) (Correct answer)
Electromagnetic induction
Electrical overload
Arc flash

Correct answer: Contact voltage (step potential / touch potential)

Touch potential (contact voltage) is the voltage difference between a grounded object that has become energized due to an insulation fault and the ground surface, which drives current through a worker's body when they make contact.

Question 26: Which OSHA standard requires construction employers to develop and implement an Emergency Action Plan (EAP)?

29 CFR 1926.502
29 CFR 1926.35 (Correct answer)
29 CFR 1926.25
29 CFR 1926.100

Correct answer: 29 CFR 1926.35

29 CFR 1926.35 covers Emergency Action Plans for construction workplaces, requiring employers to establish procedures for employee actions during fire and other emergencies.

Question 27: A supervisor observes an experienced crew member repeatedly failing to wear safety glasses while using a chipping hammer. What is the most effective initial action for the supervisor to take to correct this behavior?

Reprimand the worker loudly in front of the crew to make an example of them.
Make a general announcement about the importance of PPE at the next group meeting.
Ignore the behavior, assuming the experienced worker knows the risks.
Privately approach the worker, state the specific observation, explain the potential consequences, and reiterate the safety requirement. (Correct answer)

Correct answer: Privately approach the worker, state the specific observation, explain the potential consequences, and reiterate the safety requirement.

Effective corrective feedback should be timely, specific, respectful, and focused on the behavior, not the person. Addressing the worker privately prevents embarrassment, clearly identifies the unsafe act and its associated risk, and reinforces expectations in a professional manner that is more likely to result in a positive behavioral change.

Question 28: Under OSHA's electrical safety requirements, when is it permissible to work on energized electrical systems (live work)?

When de-energizing introduces additional or increased hazards, or is infeasible due to equipment design or operational limitations (Correct answer)
Only when the voltage is below 120V
Never — all work must be performed with equipment de-energized
Whenever a qualified electrician is present

Correct answer: When de-energizing introduces additional or increased hazards, or is infeasible due to equipment design or operational limitations

OSHA 1926.416 and NFPA 70E establish that energized electrical work is permitted only when de-energizing the equipment would introduce additional hazards (e.g., loss of power to critical life-safety systems) or is infeasible due to equipment design or operational limitations.

Question 29: What is the primary goal of a 'Stop Work Authority' (SWA) program on a construction site?

To empower every worker to stop any work they believe poses an immediate danger, without fear of retaliation (Correct answer)
To create a process for reporting OSHA violations
To allow workers to stop work when they disagree with the schedule
To give managers authority to stop non-compliant subcontractors

Correct answer: To empower every worker to stop any work they believe poses an immediate danger, without fear of retaliation

SWA programs give every worker, at every level, the authority and responsibility to stop work when they observe an imminent danger.

Question 30: Adequate sanitation facilities on construction sites include potable water for drinking at a minimum rate of:

2 liters per worker per shift
1 quart per worker per 4-hour period
1 quart per worker per day (Correct answer)
1 pint per worker per hour in heat

Correct answer: 1 quart per worker per day

OSHA requires a minimum of 1 quart of potable water per person per hour during heavy work in heat, but baseline requirement is 1 quart per worker per day.

Question 31: During an asbestos abatement project, which of the following is a critical engineering control used to prevent the spread of asbestos fibers outside the work area?

Double-bagging all asbestos waste in clearly labeled disposal bags.
Establishing a negative air pressure enclosure with HEPA filtration. (Correct answer)
Requiring all workers to wear N-100 respirators.
Wetting the asbestos-containing material (ACM) during removal.

Correct answer: Establishing a negative air pressure enclosure with HEPA filtration.

While respirators (PPE), wetting materials (work practice), and proper bagging (disposal) are all crucial parts of asbestos abatement, the primary engineering control to contain the hazard is the use of a negative air pressure enclosure. This system uses HEPA-filtered machines to ensure that air flows into the work area, not out, preventing contaminated airborne fibers from escaping and contaminating other parts of the building.

Question 32: What is 'incident command system' (ICS) and why is it used at construction emergency scenes?

A method for ranking hazard severity
A software system for tracking incidents
A OSHA inspection protocol
A standardized management system providing clear chain of command during emergencies (Correct answer)

Correct answer: A standardized management system providing clear chain of command during emergencies

ICS provides a unified, scalable command structure for managing emergency response resources and personnel.

Question 33: A construction worker uses a jackhammer for four continuous hours. What is the primary occupational health hazard from this exposure?

Hand-arm vibration syndrome (HAVS) affecting nerves and circulation (Correct answer)
Chemical burns from hydraulic fluid or fuel contact
Eye strain caused by sustained concentration on the work area
Thermal burns from prolonged contact with the tool's heated surface

Correct answer: Hand-arm vibration syndrome (HAVS) affecting nerves and circulation

Prolonged use of vibrating tools like jackhammers can cause hand-arm vibration syndrome (HAVS), a permanent, progressive condition affecting nerves, blood vessels, and joints.

Question 34: Which fire extinguisher class is rated for fires involving flammable liquids such as gasoline, diesel fuel, and solvents?

Class A
Class D
Class B (Correct answer)
Class C

Correct answer: Class B

Class B extinguishers are designed for flammable liquid fires — commonly found in construction where fuels, paints, and solvents are used.

Question 35: Ergonomic hazards in construction that contribute to musculoskeletal disorders (MSDs) include:

Using power tools instead of hand tools
Repetitive motions, awkward postures, heavy lifting, and contact stress (Correct answer)
Wearing hard hats in cold weather
Working on level surfaces

Correct answer: Repetitive motions, awkward postures, heavy lifting, and contact stress

MSDs are caused by ergonomic risk factors including repetition, awkward postures, forceful exertions, and contact stress from tools or surfaces.

Question 36: When using a safety monitoring system as fall protection, the safety monitor must:

Be a competent person who is on the same walking/working surface and within visual range of workers (Correct answer)
Be equipped with a safety harness
Monitor no more than 20 workers at one time
Be stationed at the edge of the roof at all times

Correct answer: Be a competent person who is on the same walking/working surface and within visual range of workers

The safety monitor must be a competent person who can see the workers and warn them when they approach the unprotected edge.

Question 37: OSHA's Voluntary Protection Programs (VPP) recognize construction sites that:

Have zero injury rates for 3 consecutive years
Have never received an OSHA citation
Demonstrate exemplary safety and health management systems meeting OSHA's rigorous performance criteria (Correct answer)
Voluntarily report all injuries to OSHA

Correct answer: Demonstrate exemplary safety and health management systems meeting OSHA's rigorous performance criteria

VPP Star status recognizes employers with comprehensive safety management systems that result in injury rates significantly below industry averages.

Question 38: A construction site supervisor is developing a heat stress prevention program. Which PPE consideration is MOST IMPORTANT when workers must wear extensive body-covering PPE (chemical suits, high-visibility vests, coveralls) in hot weather?

Accounting for heat burden added by PPE in the heat stress assessment and implementing work-rest cycles (Correct answer)
Selecting PPE made of natural fibers only
Ensuring PPE color is lighter to reflect heat
Requiring workers to drink water before donning PPE

Correct answer: Accounting for heat burden added by PPE in the heat stress assessment and implementing work-rest cycles

PPE adds a metabolic heat burden (clothing heat correction factor) because it traps body heat and may impair sweat evaporation. Heat stress assessments using WBGT or heat index must account for PPE heat burden, and work-rest cycles must be adjusted accordingly.

Question 39: A safety supervisor notices workers are repeatedly bypassing a machine guard. What is the MOST effective long-term solution?

Investigate why workers bypass the guard and redesign it to be user-friendly without compromising protection (Correct answer)
Issue verbal warnings and document the behavior
Increase the frequency of safety inspections
Require workers to sign a form acknowledging the guard must remain in place

Correct answer: Investigate why workers bypass the guard and redesign it to be user-friendly without compromising protection

Repeatedly bypassed guards often indicate a design problem. Investigating the root cause and redesigning the guard addresses the underlying issue rather than enforcing compliance against a poorly designed system.

Question 40: Suspension scaffold wire rope must be removed from service when a deficiency is found during inspection. Which deficiency alone requires immediate removal?

Any kink, even if the wire is not broken
Wear on the outer wires of 1/10 of the original diameter
Six randomly distributed broken wires in one lay, or three broken wires in one strand in one rope lay (Correct answer)
Any surface rust or minor discoloration

Correct answer: Six randomly distributed broken wires in one lay, or three broken wires in one strand in one rope lay

For suspension scaffold rope, 6 randomly distributed broken wires or 3 broken wires in one strand requires removal per OSHA and ASME standards.

Question 41: What is the key difference between an N95 filtering facepiece respirator and a P100 filtering facepiece respirator under NIOSH's 42 CFR Part 84?

N95 provides full-face protection; P100 is a half-face respirator
N95 filters 99.97% of particles; P100 filters 95% of particles
N95 is not oil-resistant and filters 95% of particles; P100 is oil-proof and filters 99.97% of particles (Correct answer)
There is no difference — both provide equal protection for construction use

Correct answer: N95 is not oil-resistant and filters 95% of particles; P100 is oil-proof and filters 99.97% of particles

NIOSH designations indicate: N = Not oil-resistant; R = oil-Resistant; P = oil-Proof (most oil-resistant). Numbers indicate filtration efficiency: 95 = 95%, 99 = 99%, 100 = 99.97%. P100 provides higher filtration efficiency and oil-proof characteristics.

Question 42: What does OSHA require regarding the number of trained first aid responders on a construction site?

In the absence of an infirmary/hospital/clinic near the site, a person trained in first aid must be available (Correct answer)
One trained person per 50 workers at all times
At least two EMTs on every shift
First aid training is optional if a hospital is within 30 miles

Correct answer: In the absence of an infirmary/hospital/clinic near the site, a person trained in first aid must be available

OSHA 29 CFR 1926.23 requires that when a hospital/clinic is not near the worksite, someone trained in first aid must be present.

Question 43: What information must be posted at a construction site for emergency purposes under OSHA standards?

The general contractor's financial bonding information
Names and photos of all workers on site
A complete list of all chemicals used on site
Emergency phone numbers and the location of nearest medical facility (Correct answer)

Correct answer: Emergency phone numbers and the location of nearest medical facility

OSHA 29 CFR 1926.50(e) requires emergency telephone numbers and the address of the nearest hospital to be posted at the worksite where they can be seen and used by everyone.

Question 44: The maximum free fall distance allowed when using a personal fall arrest system (PFAS) is:

6 feet (Correct answer)
10 feet
4 feet
12 feet

Correct answer: 6 feet

OSHA limits free fall to 6 feet when using a PFAS, and the system must stop the fall before the worker reaches 6 feet below the work surface.

Question 45: What is the minimum distance that heavy equipment must maintain from the edge of an excavation to prevent excessive surcharge loading on trench walls?

4 feet
10 feet for any equipment over 10,000 lbs
Determined by the competent person based on soil type, depth, and equipment weight (Correct answer)
2 feet

Correct answer: Determined by the competent person based on soil type, depth, and equipment weight

OSHA does not specify a fixed minimum distance for heavy equipment — the competent person must assess the surcharge effect based on equipment weight, soil type, trench depth, and protective system design.

Question 46: How can a safety supervisor motivate workers to adhere to safety standards?

By offering financial incentives for safety compliance
By creating a competitive environment where workers are rewarded for the least accidents
By emphasizing the importance of safety through training, communication, and leading by example (Correct answer)
By enforcing severe penalties for minor safety violations

Correct answer: By emphasizing the importance of safety through training, communication, and leading by example

Effective safety motivation comes from fostering a positive safety culture where workers understand the value of safety for themselves and their colleagues. Supervisors can achieve this by providing thorough training, maintaining open communication about hazards and controls, and consistently demonstrating safe behaviors themselves. Leading by example builds trust and encourages voluntary compliance.

Question 47: A severe thunderstorm with frequent lightning is rapidly approaching a large, open-field construction site where a steel frame is being erected. What is the safest immediate action for the supervisor to direct the crew to take?

Continue working but avoid direct contact with the steel structure.
Lie flat on the ground in an open area to minimize their height.
Gather under the tallest piece of equipment for shelter from the rain.
Take shelter inside a hard-topped metal vehicle with the windows rolled up. (Correct answer)

Correct answer: Take shelter inside a hard-topped metal vehicle with the windows rolled up.

OSHA recommends that if safe, enclosed buildings are not accessible during a lightning storm, workers should take shelter in a hard-topped metal vehicle with the windows closed. Seeking shelter under tall structures like cranes or trees, or lying on the ground, increases the risk of a lightning strike.

Question 48: What documentation must a competent person maintain after completing a scaffold inspection under OSHA 1926 Subpart Q?

A signed log book kept at the scaffold base at all times
A written record is not explicitly required, but findings must be communicated and hazards corrected (Correct answer)
An inspection certificate posted at the job site entrance
A written report filed with OSHA within 24 hours

Correct answer: A written record is not explicitly required, but findings must be communicated and hazards corrected

OSHA does not mandate a specific written inspection report format, but the competent person must communicate findings and ensure hazards are corrected before use.

Question 49: OSHA's enforcement process typically begins with:

A formal citation issued to the employer
A written warning letter from the OSHA area director
Immediate shutdown of the work site
An opening conference with the employer followed by a workplace inspection (Correct answer)

Correct answer: An opening conference with the employer followed by a workplace inspection

OSHA inspections begin with an opening conference where the inspector presents credentials and explains the scope of the inspection.

Question 50: Under OSHA's foot protection standard (1926.96), what ASTM standard governs safety-toed footwear for construction workers?

ASTM F2413 — specifying impact and compression resistance for safety-toed footwear (Correct answer)
ASTM E119 — fire resistance testing
ASTM G155 — UV exposure testing
ASTM D2240 — material hardness testing

Correct answer: ASTM F2413 — specifying impact and compression resistance for safety-toed footwear

OSHA 1926.96 requires safety-toed footwear to meet ASTM F2413 (Standard Specification for Performance Requirements for Foot Protection), which sets minimum impact (75 ft-lb) and compression (2,500 lb) resistance for safety toes.

Question 51: What must be done before lifting with any crane at the start of each shift?

Perform a full annual inspection
Obtain written approval from the engineer
Test lift a load equal to maximum capacity
Complete a pre-shift inspection by a competent person (Correct answer)

Correct answer: Complete a pre-shift inspection by a competent person

OSHA requires a pre-shift inspection by a competent person before each shift of operation.

Question 52: A construction supervisor demonstrates effective safety leadership by:

Issuing written safety memos without follow-up
Visibly participating in safety activities and modeling the behaviors expected of workers (Correct answer)
Delegating all safety responsibilities to the safety officer
Focusing only on production metrics and meeting deadlines

Correct answer: Visibly participating in safety activities and modeling the behaviors expected of workers

Effective safety leaders 'walk the talk' — their visible participation in safety activities communicates that safety is genuinely valued.

Question 53: How can supervisors help prevent accidents related to heavy machinery on construction sites?

By restricting workers' movement around machinery during breaks
By allowing only experienced workers to operate machinery
By enforcing the use of machine guarding and proper signage (Correct answer)
By reducing the number of workers operating machinery

Correct answer: By enforcing the use of machine guarding and proper signage

Machine guarding is essential for preventing contact with moving parts of heavy machinery, which can cause severe injuries. Proper signage, including warning labels and operational instructions, alerts workers to potential dangers and safe operating procedures. Enforcing these measures ensures that physical barriers and clear communication reduce the risk of accidents involving heavy equipment.

Question 54: When rigging a load with multiple sling legs, the tension in each leg increases as the angle between the sling and the horizontal:

Increases
Decreases (Correct answer)
Remains constant
Doubles with each 10-degree change

Correct answer: Decreases

As the sling angle from horizontal decreases (more horizontal), tension in each leg increases due to the de-rating effect.

Question 55: Effective conflict resolution between safety requirements and production pressure on construction sites involves:

Requiring written approval from the owner for every safety stoppage
Always prioritizing production to meet contractual deadlines
Letting workers decide which requirement to follow
Having a pre-established process to evaluate conflicts and escalate to management when necessary (Correct answer)

Correct answer: Having a pre-established process to evaluate conflicts and escalate to management when necessary

Pre-established conflict resolution processes prevent ad-hoc decisions that compromise safety when production pressure increases.

Question 56: What is the purpose of the 'green tag' system commonly used in scaffold management programs?

To identify scaffolds rated for heavy-duty loads only
To indicate that the scaffold is made of environmentally certified materials
To mark scaffolds that require fall protection for users
To show that a competent person has inspected the scaffold and it is safe for use (Correct answer)

Correct answer: To show that a competent person has inspected the scaffold and it is safe for use

A green tag indicates a competent person has inspected the scaffold and authorized it for safe use.

Question 57: What does 29 CFR 1926 Subpart P specifically address in construction safety?

Excavations (Correct answer)
Fall protection
Fire protection
Scaffolding requirements

Correct answer: Excavations

29 CFR 1926 Subpart P covers excavation safety, including requirements for protective systems (sloping, shoring, trench boxes) and competent person inspections.

Question 58: Which scenario would classify a confined space as 'permit-required' under OSHA 29 CFR 1910.146?

A space large enough for a worker to enter but with no mechanical hazards or atmospheric risks
A crawl space that is used infrequently for inspection purposes only
A utility vault that contains a potential engulfment hazard from accumulated water (Correct answer)
A large storage tank with continuous ventilation and no hazardous materials

Correct answer: A utility vault that contains a potential engulfment hazard from accumulated water

A space with a potential engulfment hazard — such as accumulated water — meets the definition of a permit-required confined space under OSHA.

Question 59: Under OSHA 29 CFR 1926.35, an emergency action plan (EAP) for a construction site must include which of the following?

Procedures for emergency evacuation including escape routes (Correct answer)
Daily safety inspection checklists
Names of all employees on site
Equipment maintenance schedules

Correct answer: Procedures for emergency evacuation including escape routes

An EAP must include emergency evacuation procedures and escape route assignments as a minimum required element.

Question 60: What is the maximum vertical distance between supported scaffold tie-ins to the structure?

30 feet
20 feet
26 feet (Correct answer)
36 feet

Correct answer: 26 feet

OSHA requires ties or guys at maximum 26-foot vertical intervals for tube-and-coupler and fabricated frame scaffolds.

Question 61: After all entrants have exited and work is complete, what must happen to the entry permit?

It is filed with OSHA as proof of compliance
It is destroyed after the space is secured
It must be cancelled, retained by the employer for at least one year, and reviewed to improve the program (Correct answer)
It is returned to the entry supervisor for possible reuse

Correct answer: It must be cancelled, retained by the employer for at least one year, and reviewed to improve the program

Completed permits must be cancelled and retained for at least one year so employers can review them to identify and correct problems in the permit program.

Question 62: The '4:1 ratio' in safety feedback refers to the principle that supervisors should:

Hold 4 safety meetings per month for every 1 incident
Document 4 unsafe acts for every 1 safe act observed
Conduct 4 safety inspections for every 1 OSHA inspection
Provide 4 positive safety observations for every 1 corrective intervention (Correct answer)

Correct answer: Provide 4 positive safety observations for every 1 corrective intervention

Research shows that positive reinforcement is more effective at changing behavior when it significantly outweighs correction — the 4:1 positive-to-corrective ratio reinforces this.

Question 63: What does the concept of 'Safety-II' or 'positive safety' emphasize in modern safety management?

Understanding why things go right (normal work) rather than only investigating failures (Correct answer)
Focusing exclusively on counting and reducing incident rates
Eliminating all worker discretion to reduce variability
Replacing human workers with automation for all hazardous tasks

Correct answer: Understanding why things go right (normal work) rather than only investigating failures

Safety-II, developed by Erik Hollnagel, shifts focus from what goes wrong to understanding how things go right — studying normal, successful work to build resilience rather than only reacting to failures.

Question 64: Under OSHA's crane standard, what is required when a crane must work within the 'encroachment zone' of a power line?

An observer must be positioned to monitor clearance (Correct answer)
The crane must be grounded to the earth
A spotter and insulating link must be used
The operator must wear rubber-soled boots

Correct answer: An observer must be positioned to monitor clearance

When working within the encroachment zone, OSHA requires an observer to be positioned to monitor the clearance between the crane and power lines.

Question 65: The hierarchy of hazard controls lists controls in what order from most to least effective?

PPE → Engineering → Administrative → Substitution → Elimination
Elimination → Substitution → Engineering controls → Administrative controls → PPE (Correct answer)
PPE → Administrative → Engineering → Substitution → Elimination
Administrative → Engineering → PPE → Elimination → Substitution

Correct answer: Elimination → Substitution → Engineering controls → Administrative controls → PPE

NIOSH's hierarchy of controls ranks from most effective (elimination) to least effective (PPE), guiding hazard control selection.

Question 66: What is the purpose of a medical surveillance program for construction workers exposed to hazardous substances?

To satisfy health insurance requirements
To screen workers for drug use
To document workers' pre-existing conditions for liability purposes
To detect early signs of occupational disease before symptoms become severe, and monitor health effects of exposure (Correct answer)

Correct answer: To detect early signs of occupational disease before symptoms become severe, and monitor health effects of exposure

Medical surveillance identifies early health effects of hazardous substance exposure, allowing intervention before irreversible damage occurs.

Question 67: Which document must be completed before excavation work begins in areas with suspected hazardous contamination?

A soil boring log from a geotechnical engineer
A site-specific health and safety plan (HASP) (Correct answer)
A utility strike report filed with the state
An OSHA 300 log entry for anticipated hazards

Correct answer: A site-specific health and safety plan (HASP)

OSHA 29 CFR 1910.120 requires a written Health and Safety Plan (HASP) before work at hazardous waste sites or areas with known contamination.

Question 68: On a construction site, a worker needs to transfer a hazardous chemical into a smaller portable container for immediate use. Under HazCom, is a label required on the portable container?

No, containers under one gallon never need labels
Yes, always — every container must be labeled
Yes, but only if the chemical is flammable
No, if the worker who filled it will use it exclusively during that shift (Correct answer)

Correct answer: No, if the worker who filled it will use it exclusively during that shift

OSHA allows an exemption from labeling for portable containers filled by workers for their own immediate use during the same shift.

Question 69: Occupational skin diseases in construction workers, such as contact dermatitis, are most commonly caused by exposure to:

Construction dust in general
Cold temperature and wind
Portland cement (wet concrete), solvents, epoxy resins, and other skin sensitizers (Correct answer)
Sunlight and UV radiation only

Correct answer: Portland cement (wet concrete), solvents, epoxy resins, and other skin sensitizers

Wet cement, solvents, epoxy resins, and other construction chemicals are leading causes of occupational contact dermatitis among construction workers.

Question 70: A fire breaks out involving energized electrical equipment in a temporary site office. Which type of fire extinguisher is most appropriate to use?

Class A (Water)
Class C (Carbon Dioxide or Dry Chemical) (Correct answer)
Class D (Combustible Metals)
Class K (Kitchen/Grease)

Correct answer: Class C (Carbon Dioxide or Dry Chemical)

Class C fire extinguishers are designed for use on fires involving energized electrical equipment. They use non-conductive extinguishing agents like carbon dioxide or dry chemical powder, which will not create an electrocution hazard for the user.

Question 71: How should a construction supervisor handle a situation where production pressure from management conflicts with a clear safety requirement?

Comply with the safety requirement, document the conflict, and communicate the safety concern up the chain of command (Correct answer)
Follow management's production direction to maintain their trust and address safety concerns later
Allow workers to decide for themselves whether to prioritize production or safety
Shut down the entire project until the conflict is formally resolved by the safety director

Correct answer: Comply with the safety requirement, document the conflict, and communicate the safety concern up the chain of command

When safety and production conflict, the supervisor must prioritize safety, document the situation, and communicate the conflict through proper channels — protecting both the workers and themselves from liability.

Question 72: What is the correct order of priorities in the Incident Command System (ICS) during a construction emergency?

Property, environment, life safety
Documentation, notification, evacuation
Life safety, incident stabilization, property preservation (Correct answer)
Evacuation, medical aid, investigation

Correct answer: Life safety, incident stabilization, property preservation

ICS prioritizes life safety first, then stabilizing the incident to prevent escalation, and finally protecting property.

Question 73: Sloping as a cave-in protection method for Type C soil requires a maximum slope angle of:

34° from horizontal (1½:1) (Correct answer)
45° from horizontal (1:1)
53° from horizontal (3/4:1)
26° from horizontal (2:1)

Correct answer: 34° from horizontal (1½:1)

Type C soil requires the most gradual slope of 1½H:1V (approximately 34°) because it is the least stable classification.

Question 74: A construction supervisor who actively seeks input from the crew on safety matters, involves them in developing Job Hazard Analyses (JHAs), and encourages open reporting of near misses is demonstrating which leadership style?

Transactional Leadership
Participative (Democratic) Leadership (Correct answer)
Laissez-Faire Leadership
Autocratic Leadership

Correct answer: Participative (Democratic) Leadership

Participative or Democratic leadership is characterized by including team members in the decision-making process. By involving the crew in safety planning and encouraging feedback, the supervisor fosters a sense of ownership and builds a stronger, more collaborative safety culture.

Question 75: Before operating a powder-actuated fastening tool on a construction site, what must the operator possess?

Manufacturer-issued training and certification (Correct answer)
At least five years of general construction experience
A general construction contractor's license
Written supervisor approval for each individual use

Correct answer: Manufacturer-issued training and certification

OSHA requires that only trained and certified operators — certified by the tool manufacturer — may use powder-actuated tools.

Question 76: When an excavation is made next to an existing building foundation, what additional hazard must the competent person evaluate?

Wind loads on the trench walls from building shadows
Increased worker traffic from building occupants
Undermining of the existing foundation and potential building collapse (Correct answer)
Noise levels from nearby traffic

Correct answer: Undermining of the existing foundation and potential building collapse

Excavating adjacent to existing foundations can undermine their bearing capacity, causing the foundation to settle, shift, or fail — potentially collapsing the adjacent structure and burying workers in the trench.

Question 77: When must scaffold erectors wear personal fall arrest systems (PFAS) or be protected by a safety net?

Always, regardless of height
Only when working above 10 feet
Whenever it is technically and economically feasible to do so (Correct answer)
Only when erecting suspended scaffolds

Correct answer: Whenever it is technically and economically feasible to do so

OSHA 1926.502 requires fall protection for scaffold erectors when it is both technically and economically feasible, based on a site-specific analysis.

Question 78: A STSC supervisor notices scaffold legs are resting on frozen ground. What is the primary concern?

Thawing ground can cause legs to shift or sink, destabilizing the scaffold (Correct answer)
Cold temperatures reduce steel strength significantly
Ice increases friction, making the scaffold more stable
Frozen ground is too hard for mudsills to penetrate

Correct answer: Thawing ground can cause legs to shift or sink, destabilizing the scaffold

When frozen ground thaws, base plates can shift or sink unevenly, causing scaffold instability and potential collapse.

Question 79: What is the role of the Safety Trained Supervisor Construction (STSC) in post-incident investigation?

To assign disciplinary action to involved workers
To negotiate with OSHA on behalf of the company
To secure the scene, document conditions, and identify root causes to prevent recurrence (Correct answer)
To process workers' compensation claims

Correct answer: To secure the scene, document conditions, and identify root causes to prevent recurrence

The STSC's role in post-incident investigation is to preserve the scene, gather facts, and conduct root cause analysis to prevent future incidents.

Question 80: When testing the atmosphere of a confined space before entry, what is the correct sequence for testing?

Toxics, Flammables, Oxygen
The order does not matter as long as all are tested
Flammables, Oxygen, Toxics
Oxygen, Flammables, Toxics (Correct answer)

Correct answer: Oxygen, Flammables, Toxics

OSHA requires a specific testing order because the presence of one gas can affect the reading of another. The correct sequence is: 1) Oxygen content, 2) Flammable gases and vapors, and 3) Potential toxic air contaminants. An oxygen-deficient or enriched atmosphere can affect the accuracy of combustible gas meters.

Question 81: What is the purpose of conducting a 'lessons learned' review after a completed construction project phase?

To finalize billing documentation and close out the project for the client
To identify workers who underperformed for disciplinary purposes
To capture what worked well and what could be improved in safety processes for application on future phases or projects (Correct answer)
To fulfill OSHA's mandatory post-project review documentation requirement

Correct answer: To capture what worked well and what could be improved in safety processes for application on future phases or projects

Lessons learned reviews capture knowledge from completed work — both successes and shortcomings — to continuously improve safety processes, procedures, and planning for future phases and projects.

Question 82: Which of the following actions best demonstrates effective leadership in safety management on a construction site?

Regularly conducting safety inspections and encouraging worker involvement in safety planning (Correct answer)
Focusing only on the completion of construction tasks rather than on safety
Assigning safety responsibilities to workers without any training
Allowing workers to determine the safety procedures they should follow

Correct answer: Regularly conducting safety inspections and encouraging worker involvement in safety planning

Effective leadership in safety management involves both proactive measures and fostering a participatory safety culture. Regular inspections identify hazards before incidents occur, while encouraging worker involvement in safety planning empowers employees, leverages their on-the-ground knowledge, and increases their commitment to safety protocols. This combination demonstrates a genuine commitment to safety.

Question 83: What is the significance of the 'Fatal Four' in OSHA's construction industry focus?

The four most common OSHA citations issued to construction employers
The four types of PPE most frequently found defective during inspections
The four leading causes of worker deaths in construction: falls, struck-by, caught-in/between, and electrocution (Correct answer)
The four OSHA standards most frequently violated on multi-employer worksites

Correct answer: The four leading causes of worker deaths in construction: falls, struck-by, caught-in/between, and electrocution

OSHA's 'Fatal Four' refers to the four leading causes of construction fatalities: falls, struck-by objects, caught-in/between hazards, and electrocution — which together account for the majority of construction worker deaths.

Question 84: What action is required when a power tool's electrical cord shows signs of fraying, cracking, or insulation damage?

Wrap the damaged section with electrical tape and resume work carefully
Tag the tool out, remove it from service, and have the cord repaired or replaced (Correct answer)
Limit usage time to reduce stress on the cord until a replacement arrives
Use the tool only in dry conditions until the cord can be formally assessed

Correct answer: Tag the tool out, remove it from service, and have the cord repaired or replaced

Damaged cord insulation exposes live conductors and poses an immediate electrocution hazard; the tool must be removed from service immediately for repair or replacement.

Question 85: During a mass casualty event on a construction site, the START triage system classifies a non-breathing victim after repositioning the airway as which tag color?

Red (immediate)
Green (minor)
Yellow (delayed)
Black (expectant/deceased) (Correct answer)

Correct answer: Black (expectant/deceased)

In START triage, a victim who does not breathe after airway repositioning is classified as Black (expectant/deceased) because resources focus on salvageable patients.

Question 86: What is the minimum height requirement for the top rail of a guardrail system on a supported scaffold?

Between 30 and 36 inches
A minimum of 48 inches
Between 38 and 45 inches (Correct answer)
Exactly 36 inches

Correct answer: Between 38 and 45 inches

Per OSHA 1926.451(g)(4)(ii), the top edge height of toprails or equivalent members on supported scaffolds must be installed between 38 inches and 45 inches above the platform surface. This height range is critical for providing effective fall protection for workers on the platform.

Question 87: Under OSHA regulations, how often must safety training be provided to construction workers?

When a new hazard is introduced or when work conditions change (Correct answer)
At the start of the workweek
Every two years
Once every five years

Correct answer: When a new hazard is introduced or when work conditions change

OSHA regulations require safety training to be provided not just at initial employment, but also whenever new hazards are introduced to the workplace or when job tasks or conditions change. This ensures workers are always informed about current risks and the necessary precautions. Regular refresher training is also often recommended or required for specific topics.

Question 88: Which of the following should be the first step in developing an emergency response plan for a construction site?

Purchasing emergency supplies and equipment
Conducting a site-wide safety audit
Assigning roles and responsibilities for emergency responders
Identifying potential emergency situations that could occur on the site (Correct answer)

Correct answer: Identifying potential emergency situations that could occur on the site

The first and most critical step in developing an effective emergency response plan is to conduct a thorough hazard assessment to identify all potential emergencies. This includes natural disasters, fires, chemical spills, medical emergencies, and structural collapses specific to the construction site. Understanding these potential scenarios allows for the creation of targeted and effective response strategies.

Question 89: Under OSHA 29 CFR 1926.150, portable fire extinguishers on construction sites must be inspected:

At least monthly (Correct answer)
After every use
Only at the beginning of each project
Annually by the manufacturer

Correct answer: At least monthly

OSHA requires that fire extinguishers be inspected monthly to ensure they are fully charged and operational.

Question 90: When a supervisor consistently allows workers to skip required PPE to avoid production delays, what safety phenomenon is being demonstrated?

An acceptable administrative control substituting for PPE requirements
Normalization of deviance — where unsafe shortcuts become the accepted standard (Correct answer)
Correct application of the hierarchy of controls
Appropriate use of supervisory discretion in low-risk situations

Correct answer: Normalization of deviance — where unsafe shortcuts become the accepted standard

Normalization of deviance describes the process by which repeated violations of safety rules — without immediate consequences — come to be accepted as normal. This is a leading contributor to major industrial accidents.

Question 91: Under OSHA 29 CFR 1926.503, construction employers must train workers in fall protection. What must be included in this training?

Just the OSHA standards applicable to their job
Only the proper use of fall arrest harnesses
The nature of fall hazards, the correct procedures for erecting and inspecting fall protection systems, the limitations of fall protection equipment, and the role of each component (Correct answer)
Only roof edge distances and ladder placement rules

Correct answer: The nature of fall hazards, the correct procedures for erecting and inspecting fall protection systems, the limitations of fall protection equipment, and the role of each component

29 CFR 1926.503 requires comprehensive fall protection training covering hazard recognition, proper use and limitations of fall protection equipment, procedures for erecting and disassembling fall protection systems, and the correct handling and storage of equipment.

Question 92: Which of the following is NOT a required element on a GHS-compliant chemical label?

Signal word
The chemical's purchase price (Correct answer)
Hazard statements
Supplier identification

Correct answer: The chemical's purchase price

GHS labels require the product identifier, signal word, hazard/precautionary statements, pictograms, and supplier info — not pricing.

Question 93: What information must be included on a confined space entry permit? (Select the BEST answer)

A list of emergency contacts and the company safety policy
Hazards identified and the name of the safety manager only
Entrant names, authorized duration, hazards identified, and required protective equipment (Correct answer)
Entrant names, employer name, and general location only

Correct answer: Entrant names, authorized duration, hazards identified, and required protective equipment

OSHA 1910.146 requires permits to include the names of entrants, authorized entry duration, identified hazards, required PPE, and other specific safety information.

Question 94: What is the acceptable range for oxygen levels within a confined space for entry without supplied air?

20.9% to 22.0%
19.5% to 23.5% (Correct answer)
16.5% to 21.0%
18.0% to 25.0%

Correct answer: 19.5% to 23.5%

OSHA defines an oxygen-deficient atmosphere as one with less than 19.5% oxygen and an oxygen-enriched atmosphere (which poses a fire hazard) as one with more than 23.5% oxygen. Therefore, the acceptable range for entry is between 19.5% and 23.5%.

Question 95: When should a pre-task safety plan be reviewed on a construction site?

Only before the project begins
Only after an incident or near miss
Monthly during safety committee meetings
Every morning at the beginning of each shift (toolbox talk) (Correct answer)

Correct answer: Every morning at the beginning of each shift (toolbox talk)

Pre-task safety briefings (toolbox talks) should occur at the start of each shift to address daily hazards specific to that day's work.

Question 96: Which of the following is a key component of an OSHA-compliant Hazard Communication (HazCom) program on a construction site?

Mandating that only safety supervisors are authorized to handle chemical containers.
A list of all employees who have been previously exposed to chemicals.
Ensuring Safety Data Sheets (SDSs) for all hazardous chemicals are readily accessible to employees. (Correct answer)
Providing generic safety training that covers all potential site hazards.

Correct answer: Ensuring Safety Data Sheets (SDSs) for all hazardous chemicals are readily accessible to employees.

OSHA's Hazard Communication Standard (1910.1200 and 1926.59) requires employers to maintain a written program that includes labels, Safety Data Sheets (SDSs) for all hazardous chemicals, and employee training. Making SDSs readily accessible is a fundamental right for workers and a core requirement of the standard.

Question 97: When must a confined space entry permit be cancelled?

When the entry supervisor leaves the site
When all authorized entrants have exited the space (Correct answer)
Only at the end of the work shift
After 8 hours regardless of work completion

Correct answer: When all authorized entrants have exited the space

The entry permit must be cancelled when the authorized entrants have exited and no further entry is required under that permit.

Question 98: Which of the following is a recognized method for controlling water accumulation in an active excavation?

Covering the excavation with tarps at the end of each day
Requiring workers to wear waterproof boots
Installing dewatering equipment (pumps, well points, or drainage ditches) (Correct answer)
Increasing the sloping angle to redirect water

Correct answer: Installing dewatering equipment (pumps, well points, or drainage ditches)

Dewatering using pumps, well points, or drainage ditches is the recognized engineering control for controlling water accumulation in excavations — maintaining dry working conditions and preventing hydrostatic pressure buildup in trench walls.

STSC (Safety Trained Supervisor Construction)

The BCSP STSC exam certifies frontline construction supervisors in safety knowledge, covering hazard identification, health hazards, emergency preparedness, and safety leadership on construction sites.

100

Questions

120 min

Time Limit

70%

To Pass

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