OSHA 10-Hour Construction Safety

At what height does OSHA require fall protection for workers in the construction industry?

• A4 feet
• B6 feet
• C8 feet
• D10 feet

What is the primary purpose of OSHA?

• ATo increase company profits
• BTo ensure safe and healthful working conditions for workers
• CTo set wage standards for construction workers
• DTo provide unemployment insurance

Which of the following is an example of personal protective equipment (PPE)?

• AA guardrail system
• BA hard hat
• CA fire extinguisher
• DA first aid kit

What are OSHA's 'Focus Four' hazards in construction?

• AHeat, cold, noise, and vibration
• BFalls, struck-by, caught-in/between, and electrocution
• CFire, flood, earthquake, and tornado
• DChemicals, radiation, dust, and fumes

What color hard hat is typically worn by visitors on a construction site?

• AYellow
• BWhite
• COrange
• DGreen

What is the minimum distance workers must stay away from overhead power lines rated at 50 kV or less?

• A5 feet
• B10 feet
• C15 feet
• D20 feet

What must be provided for excavations 4 feet deep or more where workers must enter?

• AA ladder for access and egress
• BHard hats only
• CWarning signs only
• DNothing additional is required

What is a Safety Data Sheet (SDS)?

• AA document listing employee emergency contacts
• BA document providing information about a chemical's hazards, handling, and emergency proc…
• CA building blueprint showing safety exits
• DA record of workplace injuries

What is the most common cause of death in the construction industry?

• AElectrocution
• BStruck-by incidents
• CFalls from heights
• DCaught-in/between hazards

Under OSHA's General Duty Clause, what is every employer required to provide?

• AFree lunch for all employees
• BA workplace free from recognized hazards that are causing or likely to cause death or ser…
• CHealth insurance for all employees
• DCompany vehicles for transportation

What type of fire extinguisher is appropriate for an electrical fire?

• AClass A (water)
• BClass B (flammable liquids)
• CClass C (electrical)
• DClass D (combustible metals)

What is a 'competent person' as defined by OSHA?

• AAny worker with 5 or more years of experience
• BA person designated by the employer who can identify hazards and has authority to take co…
• CA worker who has completed an OSHA 30-hour course
• DThe project owner or general contractor

Workers are required to wear high-visibility safety vests when working near what type of hazard?

• AChemical spills
• BMoving vehicles and equipment
• CLoud machinery
• DOverhead power lines

What is the correct way to use a portable ladder?

• APlace it on an unstable surface to reach higher
• BSet it at a 4:1 ratio (1 foot out for every 4 feet of height)
• CLean it against a window frame
• DStand on the top rung for maximum reach

What does the GHS pictogram of a skull and crossbones indicate on a chemical label?

• AThe chemical is flammable
• BThe chemical can cause acute toxicity or death
• CThe chemical is corrosive
• DThe chemical is an environmental hazard

What is the purpose of a Ground Fault Circuit Interrupter (GFCI)?

• ATo prevent electrical overloads
• BTo detect ground faults and shut off power quickly to prevent electrocution
• CTo increase voltage for power tools
• DTo protect circuits from lightning strikes

An excavation is 6 feet deep in Type C soil. What protective system is required?

• ANo protection needed at this depth
• BSloping at 1.5:1 (horizontal to vertical), shoring, or a trench box
• CSloping at 0.75:1 only
• DA warning sign at the edge is sufficient

What is a 'caught-in/between' hazard?

• ABeing struck by a falling object
• BBeing trapped, compressed, or crushed between objects or parts of objects
• CFalling from a height
• DReceiving an electrical shock

How often must scaffolding be inspected by a competent person?

• AOnce when first erected
• BBefore each work shift and after any event that could affect structural integrity
• CWeekly
• DMonthly

What right does an employee have if they believe their workplace is unsafe?

• ANo rights — they must follow employer instructions
• BThe right to file a complaint with OSHA without fear of retaliation
• CThe right to shut down the entire job site
• DThe right to fire their supervisor

What type of struck-by hazard involves a worker being hit by a vehicle on a construction site?

• AStruck-by flying object
• BStruck-by falling object
• CStruck-by swinging object
• DStruck-by rolling object

What is the minimum width for a scaffold platform or walkway under OSHA 29 CFR 1926.451(b)(2)?

• A6 inches
• B10 inches
• C12 inches
• D18 inches

When must employers provide hearing protection to workers?

• AAt all times on a construction site
• BWhen noise levels reach or exceed 85 decibels over an 8-hour time-weighted average
• COnly when workers request it
• DOnly during demolition work

What is the hierarchy of controls for workplace hazards, from most to least effective?

• APPE, administrative controls, engineering controls, elimination
• BElimination, substitution, engineering controls, administrative controls, PPE
• CPPE, elimination, substitution, engineering controls
• DAdministrative controls, PPE, engineering controls, substitution

What information must be on a GHS-compliant chemical label?

• AOnly the chemical name
• BProduct identifier, signal word, hazard statements, pictograms, precautionary statements,…
• COnly the hazard pictogram
• DBrand name and price

What is the maximum height of a free-standing scaffold tower before it must be tied to the building?

• AThe height cannot exceed 2 times the minimum base dimension
• BThe height cannot exceed 4 times the minimum base dimension
• CThe height cannot exceed 6 times the minimum base dimension
• DThere is no height restriction for free-standing scaffolds

What is a 'competent person' required to do before workers enter a trench?

• AFile a permit with the local building department
• BInspect the trench conditions, classify the soil type, and determine the appropriate prot…
• CCall OSHA for approval
• DTake a soil sample to a laboratory for testing

What is the difference between a guardrail and a personal fall arrest system?

• AThere is no difference; they serve the same purpose
• BA guardrail prevents falls by creating a barrier; a fall arrest system stops a fall after…
• CA guardrail is more expensive than a fall arrest system
• DA personal fall arrest system is always preferred over guardrails

Under the Hazard Communication Standard, what must employers do when new hazardous chemicals are introduced to the workplace?

• ANothing — the standard only applies to chemicals present at the time of initial training
• BUpdate the chemical inventory, obtain SDSs, update labels, and train affected employees
• CWait for OSHA to issue new guidelines
• DOnly notify the supervisor

What is 'lockout/tagout' (LOTO) used for on a construction site?

• ALocking up tools at the end of the work shift
• BControlling hazardous energy sources before servicing or maintaining equipment
• CSecuring the job site perimeter
• DLocking chemical storage cabinets

A worker is using a full-body harness and a 6-foot lanyard. What is the minimum clearance distance required below the worker to safely arrest a fall?

• A6 feet
• B12 feet
• C18.5 feet
• D25 feet

What is the OSHA permissible exposure limit (PEL) for crystalline silica dust in construction?

• A100 μg/m³
• B50 μg/m³
• C25 μg/m³
• D10 μg/m³

When is a scaffold required to have guardrails?

• AOnly when the scaffold is over 20 feet high
• BWhen the scaffold platform is more than 10 feet above the ground or lower level
• CWhen workers request them
• DOnly on suspended scaffolds