Health And Safety In Construction Quiz

2.

What is the hazard in this picture?

There is no hazard
Vibrations from equipment overhead
Possible cave-in
Fumes from overhead equipment
Sloped toward hole at the top of the cut which could allow for falling debris

Correct Answer(s)

A. Vibrations from equipment overhead
A. Possible cave-in
A. Fumes from overhead equipment
A. Sloped toward hole at the top of the cut which could allow for falling debris

Explanation

The hazard in this picture includes vibrations from equipment overhead, possible cave-in, fumes from overhead equipment, and the slope towards the hole at the top of the cut which could allow for falling debris. These hazards pose potential risks to the safety of individuals in the vicinity.

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3.

Which soil type has the greatest compressive strength rating 1.5 tons per square foot?

Type A
Type B
Type C
Type D
None of the Above

Correct Answer

A. Type A

Explanation

Type A soil has the greatest compressive strength rating of 1.5 tons per square foot. This means that Type A soil can withstand the highest amount of pressure before it starts to compress or deform. The other soil types (B, C, D) have lower compressive strength ratings, indicating that they are not as strong as Type A soil. Therefore, Type A soil is the correct answer in this case.

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4.

_______ is a technique used to prevent cave-ins by employing a specific angle on the sides of the excavation.

Correct Answer
Sloping
sloping
SLOPING
Slope

Explanation
Sloping is a technique used to prevent cave-ins by employing a specific angle on the sides of the excavation. By sloping the sides of the excavation at a specific angle, the soil is stabilized and less likely to collapse. This technique is commonly used in construction and excavation projects to ensure the safety of workers and prevent accidents or injuries caused by cave-ins.

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5.

Can weather or climate affect how a trench protective system needs to be designed?

YES
NO

Correct Answer

A. YES

Explanation

Weather and climate can indeed affect how a trench protective system needs to be designed. Different weather conditions such as heavy rain or snow can increase the risk of trench collapse, requiring additional protective measures such as shoring or shielding. Extreme temperatures can also impact the stability of the soil, making it necessary to adjust the design of the protective system accordingly. Additionally, factors like wind speed and humidity levels can influence the choice of materials and construction techniques used in the trench protective system. Therefore, weather and climate considerations are crucial in designing an effective and safe trench protective system.

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6.

What can be done to prevent vehicles from entering an excavation? Mark all that apply.

Install Barricades
Hand and Mechanical Signals
Put yourself in front of the vehicle
Berms and Stop Logs
Slope Soil away from Excavation

Correct Answer(s)

A. Install Barricades
A. Hand and Mechanical Signals
A. Berms and Stop Logs
A. Slope Soil away from Excavation

Explanation

To prevent vehicles from entering an excavation, several measures can be taken. Installing barricades can create a physical barrier to restrict vehicle access. Hand and mechanical signals can be used to communicate with drivers and ensure they are aware of the excavation. Berms and stop logs can be placed around the excavation to further prevent accidental entry. Sloping the soil away from the excavation can also discourage vehicles from approaching the area. These measures work together to enhance safety and prevent vehicles from entering the excavation site.

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7.

What needs to be done before you start to excavate?

Evaluate soil conditions.
Construct protective systems.
Utility locate
Provide safe access
All of the Above

Correct Answer

A. All of the Above

Explanation

Before starting to excavate, several steps need to be taken to ensure safety and efficiency. Evaluating soil conditions is crucial to determine the stability and potential risks of the excavation site. Constructing protective systems such as shoring or trench boxes helps prevent cave-ins and provides a safe working environment. Utility locate is necessary to identify and mark any underground utilities to avoid damaging them during excavation. Providing safe access ensures that workers can enter and exit the excavation site safely. Therefore, all of the above steps need to be done before starting to excavate.

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8.

Does this excavation need to be inspected every day by a competent person?

Yes
No

Correct Answer

A. Yes

Explanation

This excavation needs to be inspected every day by a competent person because daily inspections are crucial to ensure the safety of the site. A competent person can identify any potential hazards, monitor the stability of the excavation, and take necessary actions to prevent accidents or collapses. Regular inspections help to maintain a safe working environment and minimize risks for workers and surrounding areas.

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9.

Which of the following is the greatest risk of an excavation?

Asphxiation
Inhalation of toxic materials
Fire
Moving Machinery
Cave-ins

Correct Answer

A. Cave-ins

Explanation

Cave-ins pose the greatest risk in an excavation because they can lead to serious injuries or fatalities. Excavations involve digging into the ground, which can weaken the surrounding soil or rock structures. If the walls or roof of the excavation collapse, workers can be trapped or buried under the debris. This can cause suffocation, crush injuries, or even death. Therefore, it is crucial to take proper safety measures, such as shoring or sloping the excavation walls, to prevent cave-ins and protect workers.

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10.

Check all the apply?

The ladder is too short and should be an extension ladder not a step ladder
Looking at the soil type the walls of the cut should be sloped
The ladder should be cleaned off
Employees should never be exposed to an excavation that could collapse
Looks good to me

Correct Answer(s)

A. The ladder is too short and should be an extension ladder not a step ladder
A. Looking at the soil type the walls of the cut should be sloped
A. The ladder should be cleaned off
A. Employees should never be exposed to an excavation that could collapse

Explanation

The ladder is too short and should be an extension ladder not a step ladder, indicating that the current ladder is not suitable for the task at hand and a different type of ladder should be used. Looking at the soil type, the walls of the cut should be sloped, suggesting that the current shape of the cut is not safe and needs to be modified. The ladder should be cleaned off, implying that there is dirt or debris on the ladder that could pose a safety hazard. Lastly, employees should never be exposed to an excavation that could collapse, emphasizing the importance of ensuring the safety of workers in potentially dangerous situations.

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11.

How far away from an excavation should spoils be placed?

Right next to excavation as long as it doesnt fall back in.
At least 2 feet from the excavation.
Wherever is the most convenient.
Within a foot to allow for reach of excavator.

Correct Answer

A. At least 2 feet from the excavation.

Explanation

The correct answer is "At least 2 feet from the excavation." This distance is necessary to ensure the stability and safety of the excavation site. Placing the spoils too close to the excavation can increase the risk of collapse or cave-in. By keeping a minimum distance of 2 feet, there is a reduced chance of the spoils falling back into the excavation and causing potential hazards for workers or equipment.

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12.

There is usually warning before a cave-in.

TRUE
FALSE

Correct Answer

A. FALSE

Explanation

The statement is false because there is usually no warning before a cave-in. Cave-ins can occur suddenly and without any prior indication, making them extremely dangerous. It is important to take necessary precautions and ensure safety measures are in place when working in or around areas prone to cave-ins.

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Health And Safety In Construction Quiz

How is this trench in violation?

Quiz Preview

What is the hazard in this picture?

Which soil type has the greatest compressive strength rating 1.5 tons per square foot?

_______ is a technique used to prevent cave-ins by employing a specific angle on the sides of the excavation.

Can weather or climate affect how a trench protective system needs to be designed?

What can be done to prevent vehicles from entering an excavation? Mark all that apply.

What needs to be done before you start to excavate?

Does this excavation need to be inspected every day by a competent person?

Which of the following is the greatest risk of an excavation?

Check all the apply?

How far away from an excavation should spoils be placed?

There is usually warning before a cave-in.