NCCER CORE Construction Site Safety Questions and Answers

Question 1

According to OSHA, which of the following is one of the four most common causes of fatalities on construction sites, often referred to as the 'Focus Four'?

Accepted Answer

Caught-in or -between incidents

Answer

Exposure to hazardous materials

Answer

Hearing damage from excessive noise

Answer

Repetitive motion injuries

Question 2

A worker is tasked with operating a power saw near an unguarded edge on the third floor of a building under construction. What is the MOST critical piece of personal protective equipment (PPE) required for this specific task, besides basic eye and head protection?

Accepted Answer

A personal fall arrest system (PFAS)

Answer

Steel-toed boots

Answer

Welding gloves

Answer

A high-visibility vest

Question 3

Before starting work on any electrical circuit, what is the first and most crucial step to prevent electrical shock?

Accepted Answer

De-energize and lock out/tag out the circuit

Answer

Wear rubber-soled shoes

Answer

Use insulated tools

Answer

Post a warning sign on the main panel

Question 4

Which of the following is the best practice for ensuring the safety of workers around heavy equipment, such as excavators or loaders?

Accepted Answer

Establishing clear communication, using a spotter, and maintaining safe distances

Answer

Assuming the operator can see you at all times

Answer

Using hand signals that only the operator understands

Answer

Painting all heavy equipment a bright color

Question 5

When must a worker wear a hard hat on a construction site?

Accepted Answer

At all times, unless in a designated safe zone like an office trailer

Answer

Only when working directly under an overhead crane

Answer

During the first and last hour of the workday

Answer

Only when a supervisor is present on site

Question 6

An excavation on a construction site is 6 feet deep. According to OSHA standards, what is required to prevent a cave-in?

Accepted Answer

A protective system, such as shoring, sloping, or shielding

Answer

A simple ladder for entry and exit

Answer

Keeping heavy equipment at least 2 feet from the edge

Answer

Daily inspection by any worker on the site