Structural 01

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1. What is a material other than water, aggregate or hydraulic cement, used as an ingredient of concrete and added to concrete before or during its mixture to modify its properties? (NSCP Sec. 5.2.1)

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About This Quiz
Structural 01 - Quiz

This quiz evaluates the quality of steel bars and concrete practices based on PS and NSCP standards, focusing on material properties and construction best practices.

2. What is a round, steel bolt embedded in concrete or masonry used to hold down masonry, steel columns, or beam casting, shock beam plates and engine heads?

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3. What is a concrete beam placed directly on the ground to provide foundation for the superstructure?

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4. What is a steel element such as wire, cable, bar, rod or strand or a bundle of such elements, used to impart prestress to concrete? (NSCP Sec. 5.2.1)

Explanation

Tendons are steel elements such as wire, cable, bar, rod, or strand, or a bundle of such elements, used to impart prestress to concrete. They are used to strengthen and reinforce the concrete by applying tension to it, resulting in a stronger and more durable structure. Tendons are commonly used in the construction of bridges, buildings, and other structures that require additional strength and stability.

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5. What is the act of excavating or filling of earth or any sound material or combination thereof, in preparation for a finishing surface such as paving?

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6. What are piles placed at an inclination to resist forces that are not critical?

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7. Aggregates should conform to PNS or ASTM standards and must be well-graded for easy workability and method of consolidation are such that the concrete can be poured without honeycomb or voids. What is the nominal maximum size of a coarse aggregate when working spaces between reinforcements for proper bonding? (NSCP Sec. 5.3.3)

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8. Which of the following concrete handling criterion impairs the quality of concrete? (NSCP Sec. 5.5.10)

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9. What criterion conforms to good construction practice for the earliest time to remove scaffolding for concrete flooring other than early-strength concrete if no anticipated load is expected over poured floor?

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10. How is a 90 degree bend standard hook for concrete reinforcement constructed? (NSCP Sec. 5.7.1.2)

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11. A brochure of a steel bar manufacturer claims the following specs: Yield strength = 275 MPa; tensile strength = 480 MPa. A sample of a 32 mm x 1000mm long steel bar was cut for sampling with the following test results: Yield stress = 28.54 kg/sq. mm; ultimate stress = 50.55 kg/sq. mm. Judge the actual test result against what is claimed in the brochure and if the test results meet the minimum PS standards.

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12. What is the minimum concrete cover for primary reinforcement of beams and columns not exposed to earth or weather for precast concrete manufactured under plant control conditions? (NSCP Sec. 5.7.7.2)

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13. How is a camber treated in a steel truss 25 meters or longer?

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14. A 1000 mm x 25 mm nominal diameter deformed steel bar is subjected to test. The following results were obtained: Actual length is 999mm; actual diameter is 23.5 mm; actual weight is 3.90 kg; yield force = 22,099.13 kgs.; yield stress = 45.02 kg/sq. mm; ultimate force = 31,425.74 kgs.; ultimate stress = 64.02 kg/sq. mm; actual strain = 12%. Judge the quality of the steel bar as per PS standard 681-04.02:1975.

Explanation

The given answer states that the steel bar is PS Grade 410 and passes the minimum standard for PS Grade 410, indicating that it is of good quality. This conclusion is based on the information provided in the question, which includes the actual dimensions, weight, yield force, yield stress, ultimate force, ultimate stress, and actual strain of the steel bar. By comparing these values to the standards set by PS standard 681-04.02:1975, it can be determined that the steel bar meets the requirements for PS Grade 410 and is therefore considered to be of good quality.

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15. Which of the following criteria for bundled bars do NOT apply?

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16. What is a method of analyzing indeterminate modular building frames by assuming hinges at the center of beam spans and column heights?

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17. Which is NOT among the following arrangement, a seismic requirement for transverse reinforcement? (NSCP Sec. 5.21.9.4.2)

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18. Good high-strength bolted connection for steel should have the following physical characteristics for good workmanship. Which in the following list is NOT ideal? (NSCP Sec. 4.23.5)

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19. Which of the following criterion precludes good construction practice for conduits and pipes embedded in concrete? (NSCP Sec. 5.6.3)

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20. What is the minimum inside diameter of a standard hook for stirrups and ties for a 16m bar and smaller in diameter?(NSCP Sec. 5.7.2.2)

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21. As a seismic requirement for flexural members where hoops are required, how are the remaining portions of a beam treated with transverse reinforcement as minimum requirement other than those required with hoops? (NSCP Sec. 5.21.3.3.4)

Explanation

The correct answer states that where hoops are not required, stirrups should be spaced at no more than d/2 throughout the length of the member. This means that even without the need for hoops, the remaining portions of the beam still need to have transverse reinforcement in the form of stirrups. These stirrups should be placed at a maximum spacing of d/2, which ensures that the beam has adequate strength and ductility to withstand seismic forces.

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22. Which of the following criterion is NOT applicable for plug and slot welds?

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What is a material other than water, aggregate ...
What is a round, steel bolt embedded in concrete ...
What is a concrete beam placed directly on the ...
What is a steel element such as wire, cable, ...
What is the act of excavating or filling of ...
What are piles placed at an inclination to ...
Aggregates should conform to PNS or ASTM ...
Which of the following concrete handling ...
What criterion conforms to good construction ...
How is a 90 degree bend standard hook for ...
A brochure of a steel bar ...
What is the minimum concrete cover ...
How is a camber treated in a steel truss 25 meters or longer?
A 1000 mm x 25 mm nominal diameter ...
Which of the following criteria for bundled bars do NOT apply?
What is a method of analyzing indeterminate ...
Which is NOT among the following arrangement, a ...
Good high-strength bolted connection for steel ...
Which of the following criterion precludes good ...
What is the minimum inside diameter of a ...
As a seismic requirement for flexural members ...
Which of the following criterion is NOT ...
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