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Questions and Answers
What is the minimum height requirement for a toe board?
What is the maximum spacing allowed between vertical supports?
What is the required strength for the mid rail?
How often should a safety net be inspected?
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What is the minimum breaking strength required for connectors in a personal fall arrest system?
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Which category of risks includes organisms like bacteria or viruses that could cause infection?
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What is the unit used to measure the energy involved in potential accidents?
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In the typical procedures of hazard control, what is the first step taken?
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Which action is taken after identifying the energy sources in hazard control procedures?
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Why is it important to prioritize high-risk areas in hazard control?
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What is a type of struck-by hazard that involves objects that are not stationary?
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Which prevention method primarily focuses on the safety of the worker during hazardous activities?
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What is the main purpose of proper materials handling?
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What is an essential component of work zone safety?
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Which of the following is NOT a struck-by hazard type?
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What role do physical barriers play in work zone safety?
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Which of the following actions is a recommended way to prevent struck-by accidents with heavy equipment?
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What method should you use to inspect rigging to prevent struck-by injuries?
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What is a potential hazard that could lead to electrocution?
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Which of the following is a recommended piece of Personal Protective Equipment (PPE) for preventing electrocution?
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What condition should tools and cords be inspected for to prevent electrocution?
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What does a Ground Fault Circuit Interrupter (GFCI) do?
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Which of the following must be done before electrical work can commence?
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What is the significance of using hard hats when working around electrical lines?
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What action is vital to ensure electrical safety during maintenance work?
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Which of the following is NOT a part of the prevention methods for electrocution?
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What percentage of total deaths in construction were attributed to the 'Fatal Four' hazards?
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Which of the following is NOT a preventive measure for fall hazards?
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What is the required height for the top rail of a guardrail system?
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Which type of incident does not fall under the 'Fatal Four' hazards?
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Among fall-related deaths, which height range resulted in the highest percentage of fatalities?
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How much force must the top rail of a guardrail system withstand?
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What source provided data on the total number of fatal falls between 2011 and 2015?
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Which of the following is a typical hazard source for falls?
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What was the percentage of fall deaths occurring from heights of 11-15 feet?
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What was the primary cause of fatalities in the construction industry?
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What percentage of fatal falls were less than 6 feet?
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Which of these fall prevention systems is commonly used in construction sites?
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Which establishment size had the highest percentage of fall-related fatalities?
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Which of the following safety techniques is part of the high-impact methods for preventing accidents?
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What percentage of falls occur from portable ladders in construction?
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Study Notes
Fatal Four Hazards
- Falls, Struck-By, Electrocution, and Caught-in-Between account for 57.7% of construction deaths
- This data is from OSHA 2016, representing 828 total deaths
Fall Hazards
- Unprotected sides, wall openings, floor holes, improper scaffold construction, and misuse of portable ladders are common fall hazards
- Fall prevention methods include Guardrail systems, Safety nets, and Personal fall arrest systems
- 23.8% of falls are attributed to ladders
- 33.3% are attributed to roofs
- Total of 1,533 deaths from falls between 2011-2015
Guardrail System Requirements
- Top rail height: 42 ± 3 inches above working level, withstanding 200 lbs of force
- Mid rail strength: 150 lbs of force
- Toe board height: 3.5 inches tall, withstanding 50 lbs of force
- Vertical spacing: No more than 8 feet apart
Safety Net Requirements
- As close as possible to the work surface
- Must be less than 30 feet below the work surface
- Mesh size: No larger than 6 by 6 inches
- Weekly inspection is mandatory
Personal Fall Arrest System Requirements
- Anchorage must support at least 5,000 lbs per worker
- Full-body harness is mandatory
- Connectors must have a minimum breaking strength of 5,000 lbs
Struck-By Hazards
- Falling objects, Flying objects, Swinging/Slipping Objects, and Rolling objects pose a threat
- Prevention methods include Personal Protective Equipment, Proper materials handling, and Work zone safety
Electrocution Hazards
- Improper grounding, Exposed electrical parts, Inadequate wiring, Damaged insulation, Overloaded circuit, Damaged tools and equipment, and Wet conditions cause hazards
Electrocution Prevention Methods
- Personal Protective Equipment: Rubber gloves, hard hats (rated for electrical uses), insulating clothes, multimeters
- Inspect tools and cords for cracks, damaged insulation, broken ground pins, frayed cords, loose parts
- Ground Fault Circuit Interrupters (GFCIs) are required on construction sites
- Lock-out/Tag-out procedure ensures electricity is off and locked out before work
Energy Wheel Overview
- Used to measure the potential severity of an uncontrolled release of energy (potential accident)
- Energy unit: Joule (J)
Energy Wheel Procedure
- Identify energy sources that could lead to accidents
- Estimate the potential impact of an accident based on energy magnitude
- Develop control measures to prevent accidental energy release or manage it safely
- Prioritize high-risk areas based on potential impact for efficient resource allocation
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Description
Test your knowledge on the Fatal Four hazards in construction, specifically focusing on falls, struck-by incidents, electrocution, and being caught-in-between. Learn about common fall hazards, prevention methods, and safety requirements for guardrails and safety nets. This quiz will help reinforce important safety practices in the construction industry.
