Nc Gc Seminars - 3

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  • 1/10 Questions

    A natural body of water is considered navigable if you can ______in it.

    • Swim
    • Fish
    • Float a canoe
    • Hunt
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Nc Gc Seminars - 3 - Quiz
About This Quiz

NC GC Seminars - 3 explores key construction techniques and standards for asphalt paving and tunnel installation. It assesses knowledge on material mixes, temperature conditions, pile driving, and soil improvement methods, crucial for professionals in civil and construction engineering.

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  • 2. 

    What type of construction refers to the installation of tunnels by pushing them into the ground while excavating from an open face?

    • Tunnel jacking

    • Open cut

    • Fixed guide

    • Trench shield

    Correct Answer
    A. Tunnel jacking
    Explanation
    Tunnel jacking refers to a type of construction where tunnels are installed by pushing them into the ground while excavating from an open face. This method involves the use of hydraulic jacks to push pre-made tunnel segments into the ground, creating a continuous tunnel. It is a commonly used technique for constructing tunnels under roads, railways, or other structures, as it minimizes disruption to the surface and surrounding areas.

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  • 3. 

    Prime coat shall be applied only when the atmospheric temperature in the shade away from artificial heat is __ºF or above for plant mix.

    • 35 degrees

    • 40 degrees

    • 50 degrees

    • 60 degrees

    Correct Answer
    A. 40 degrees
    Explanation
    Prime coat is a thin layer of bituminous material applied to the surface of a prepared base course before the placement of an asphalt surface. It helps in bonding the layers together and improves the adhesion between the base and the asphalt. The correct answer of 40 degrees Fahrenheit indicates that prime coat should only be applied when the atmospheric temperature in the shade is 40 degrees Fahrenheit or above for plant mix. This ensures that the temperature is suitable for proper adhesion and curing of the prime coat.

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  • 4. 

    What will cause short waves in asphalt paving?

    • An inconsistent mix in front of the paver

    • The paver speed

    • Trucks delivering slowly

    • Trucks bumping paver

    Correct Answer
    A. An inconsistent mix in front of the paver
    Explanation
    Short waves in asphalt paving can be caused by an inconsistent mix in front of the paver. If the mix is not uniform, it can lead to variations in the thickness and compaction of the asphalt, resulting in uneven surfaces with short waves. This can happen when the aggregate and binder are not properly mixed, or when there are variations in the temperature or moisture content of the mix. It is important to ensure a consistent mix is maintained in order to achieve a smooth and durable asphalt pavement.

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  • 5. 

    What is the unit for measurement for placement of spiral reinforcing for precast-prestressed concrete piles?

    • Turns per inch

    • Diameter of spirals

    • Radials per inch

    • Number of spirals

    Correct Answer
    A. Turns per inch
    Explanation
    The unit for measurement for the placement of spiral reinforcing for precast-prestressed concrete piles is turns per inch. This refers to the number of complete rotations or turns made by the spiral reinforcement per inch of the pile. It is an important parameter in determining the spacing and density of the spiral reinforcement, which is crucial for providing the required strength and stability to the precast-prestressed concrete piles.

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  • 6. 

    Poor quality ground encountered while installing jacked tunnel sections can be improved by ___________ the soil.

    • Blasting

    • Freezing

    • Shoring

    • Over-excavating site

    Correct Answer
    A. Freezing
    Explanation
    Freezing is the correct answer because it is a method used to improve poor quality ground encountered during the installation of jacked tunnel sections. Freezing the soil helps to stabilize it by reducing its moisture content and increasing its strength. This is achieved by circulating a refrigerant through pipes embedded in the ground, causing the soil to freeze and become more stable.

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  • 7. 

    What type of bridge girders are typically used when clearance is not an issue?

    • Truss plate

    • Open web

    • Deck plate

    • Pony through plate

    Correct Answer
    A. Deck plate
    Explanation
    Deck plate girders are typically used when clearance is not an issue. This type of bridge girder consists of a solid steel plate that forms the top and bottom flanges, connected by vertical or inclined web members. Deck plate girders provide a solid and continuous surface for vehicles to travel on, making them suitable for situations where clearance height is not a constraint. Truss plate girders, on the other hand, are used when longer spans or higher load capacities are required. Open web girders are used for shorter spans and lighter loads. Pony through plate girders are used when clearance is limited and the bridge needs to be compact.

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  • 8. 

    The type of joint used to accommodate the longitudinal expansion and contraction of the rail on long open-decked railway bridges is called the ______________ joint.

    • Expansion

    • Conley

    • Compromise

    • Arc welded

    Correct Answer
    A. Conley
    Explanation
    The type of joint used to accommodate the longitudinal expansion and contraction of the rail on long open-decked railway bridges is called the Conley joint. This type of joint allows for the rail to expand and contract with temperature changes without causing damage to the structure. It is specifically designed to handle the movement and stress that occurs due to thermal expansion and contraction, ensuring the stability and safety of the railway bridge.

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  • 9. 

    What type of leads is best suited for driving piles in marine applications?

    • Hydraulic

    • Swing

    • Fixed

    • Templates

    Correct Answer
    A. Templates
    Explanation
    In marine applications, templates are the best suited type of leads for driving piles. Templates are structures that guide the pile-driving equipment and ensure accurate placement of the piles. They provide stability and precision in marine environments, where the ground conditions can be challenging and the piles need to be driven deep into the seabed. Templates help to maintain the alignment and verticality of the piles, ensuring a strong foundation for marine structures.

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  • 10. 

    Construction of a single-family home in a CAMA county may require _______ permit.

    • A minor permit

    • A general permit

    • A major permit

    • No CAMA permit is required

    Correct Answer
    A. A minor permit
    Explanation
    In a CAMA county, the construction of a single-family home may require a minor permit. This suggests that the construction of a single-family home in this county is considered to be a relatively small or minor project, and therefore only requires a minor permit rather than a general or major permit. It also implies that there may be different levels of permits depending on the size or complexity of the construction project.

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  • Mar 22, 2023
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  • Mar 23, 2010
    Quiz Created by
    Don Messer
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