Unit 6c (Concrete Placement)

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Unit 6c (Concrete Placement) - Quiz

You must complete Unit 6C (Concrete Placement) with a score of 90% or higher. This will conclude all quizzes in Unit 6.


Questions and Answers
  • 1. 

    Which of the following statements concerning access during concrete placement are true (select all that apply)?

    • A.

      Know where workers and equipment are.

    • B.

      Provide walkways over rebar when possible.

    • C.

      Tie off to protect from falling concrete and/or rebar.

    • D.

      Have a clear haul and staging area for trucks.

    Correct Answer(s)
    A. Know where workers and equipment are.
    B. Provide walkways over rebar when possible.
    D. Have a clear haul and staging area for trucks.
    Explanation
    During concrete placement, it is important to know the location of workers and equipment to ensure their safety. Providing walkways over rebar when possible helps to prevent workers from tripping or stepping on hazardous materials. Having a clear haul and staging area for trucks ensures that there is enough space for the concrete delivery process to take place smoothly.

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  • 2. 

    If the concrete work is performed through a subcontractor, we (as the general contractor) are not responsible for proper equipment set up and maintenance.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The statement is false because as the general contractor, we are responsible for ensuring that all work, including subcontracted work, is performed properly and safely. This includes the equipment set up and maintenance.

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  • 3. 

    When working with concrete, a few items to have on site include (select all that apply):

    • A.

      Neutralite

    • B.

      Barrier Cream

    • C.

      Gasoline

    • D.

      Eye Wash

    Correct Answer(s)
    A. Neutralite
    B. Barrier Cream
    D. Eye Wash
    Explanation
    When working with concrete, it is important to have certain items on site for safety purposes. Neutralite is a substance used to neutralize acidic or alkaline materials, which can be helpful in case of any spills or accidents involving concrete. Barrier cream is used to protect the skin from irritants and chemicals, which can be useful when handling concrete. Eye wash is necessary in case of any contact with concrete dust or particles that may cause irritation or injury to the eyes. Gasoline, on the other hand, is not relevant to working with concrete and does not provide any safety benefits.

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  • 4. 

    Which of the following PPE items are not directly associated with placing concrete?

    • A.

      Alkali Resistant Gloves

    • B.

      Rubber Boots

    • C.

      Eye Protection

    • D.

      Harness

    Correct Answer
    D. Harness
    Explanation
    A harness is not directly associated with placing concrete. It is typically used for fall protection or to secure workers when working at heights. Placing concrete involves tasks such as pouring, spreading, and finishing the concrete, which do not require the use of a harness. Therefore, a harness is not directly related to the process of placing concrete.

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  • 5. 

    What is shown in the picture that must be on every pump hose for safety?  

    • A.

      Safety Choker

    • B.

      Bleeder Valve

    • C.

      Pressure Gauge

    • D.

      Duct Tape

    Correct Answer
    A. Safety Choker
    Explanation
    A safety choker is shown in the picture that must be on every pump hose for safety.

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  • 6. 

    It is okay to work under the boom of a pump truck when it is necessary.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Working under the boom of a pump truck is not safe, even if it is necessary. This is because the boom of a pump truck can pose a serious risk of injury or even death if it were to collapse or malfunction. It is important to prioritize safety and find alternative methods or equipment to complete the necessary tasks without putting oneself at risk.

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  • 7. 

    When backing up a concrete truck, what safety hazards exist?

    • A.

      Crushing

    • B.

      Pinch Points

    • C.

      Blind Spots

    • D.

      All of the Above

    Correct Answer
    D. All of the Above
    Explanation
    When backing up a concrete truck, there are several safety hazards that exist. Crushing is a potential hazard as the truck can accidentally crush objects or people in its path. Pinch points are another hazard, where people or objects can get caught between the truck and other surfaces, leading to injuries. Blind spots are also a safety hazard as the driver may not be able to see people or objects behind the truck, increasing the risk of accidents. Therefore, all of these hazards exist when backing up a concrete truck.

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  • 8. 

    What is a hazard of wet concrete (select all that apply):

    • A.

      Burns

    • B.

      Drowning

    • C.

      Eye Irritation

    • D.

      Hypothermia

    Correct Answer(s)
    A. Burns
    C. Eye Irritation
    Explanation
    Wet concrete can cause burns and eye irritation. When wet concrete comes into contact with the skin, it can cause a chemical reaction that leads to burns. Additionally, the alkaline nature of wet concrete can irritate the eyes if it splashes or gets in contact with them. However, drowning and hypothermia are not hazards associated with wet concrete.

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  • 9. 

    A concrete bucket can be used without inspection if it was used on previous Kiewit jobs.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The statement is false because even if a concrete bucket was used on previous Kiewit jobs, it still needs to be inspected before being used again. Inspection is necessary to ensure that the bucket is in good condition, free from any damage or defects that could compromise its safety and effectiveness. It is important to prioritize safety and follow proper protocols, including inspecting equipment before each use, regardless of its previous usage history.

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  • 10. 

    Which type(s) of glove(s) is best suited for working with concrete (select all that apply)?

    • A.

      Leather with Nitrite Liners

    • B.

      Rubber

    • C.

      Cotton

    • D.

      Gloves are not necessary.

    Correct Answer(s)
    A. Leather with Nitrite Liners
    B. Rubber
    Explanation
    Leather with Nitrite Liners and Rubber gloves are both suitable for working with concrete. Leather gloves provide protection against abrasions and cuts, while the nitrite liners enhance their durability and resistance to chemicals. Rubber gloves, on the other hand, offer protection against chemicals and provide a good grip. Cotton gloves, although comfortable, do not provide sufficient protection for working with concrete. Therefore, the best options for working with concrete are Leather with Nitrite Liners and Rubber gloves.

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  • 11. 

    If the pump truck operator cannot extend his outrigger all the way out but is pouring on the opposite side of the truck, is it okay?

    • A.

      Yes

    • B.

      No

    Correct Answer
    B. No
    Explanation
    If the pump truck operator cannot extend his outrigger all the way out but is pouring on the opposite side of the truck, it is not okay. The outrigger is an essential stabilizing mechanism that helps prevent the truck from tipping over during the concrete pouring process. If the outrigger is not fully extended, it compromises the stability of the truck and increases the risk of accidents or damage to the equipment. Therefore, it is important for the operator to ensure that the outrigger is fully extended before pouring on the opposite side of the truck.

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  • 12. 

    Regarding the case stated in the previous question, who has the authority to approve an outrigger not fully extended?

    • A.

      Project Manager

    • B.

      Job Superintendent

    • C.

      Engineer

    • D.

      Foreman

    Correct Answer
    A. Project Manager
    Explanation
    The Project Manager has the authority to approve an outrigger not fully extended. As the person responsible for overseeing the project, the Project Manager has the overall authority and decision-making power to approve or reject any deviations from the standard procedures. They are responsible for ensuring the safety and compliance of the project, including the proper extension of outriggers. The Job Superintendent, Engineer, and Foreman may have input and recommendations, but the final approval rests with the Project Manager.

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