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ICC Bolting Questions and Answers | Latest Update | 2024/2025 | 100% Verified
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ICC Bolting Questions and Answers | Latest Update | 2024/2025 | 100% Verified What is the primary purpose of bolt pre-tensioning in structural connections? The primary purpose of bolt pre-tensioning is to ensure the connected components remain securely clamped together, resisting slippage an...

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  • October 9, 2024
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  • 2024/2025
  • Exam (elaborations)
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ICC Bolting Questions and Answers |
Latest Update | 2024/2025 | 100% Verified

What is the primary purpose of bolt pre-tensioning in structural connections?


✔✔ The primary purpose of bolt pre-tensioning is to ensure the connected components remain

securely clamped together, resisting slippage and improving joint stability.




How does bolt size impact the strength of a bolted connection?


✔✔ Larger bolt diameters generally provide greater strength because they can distribute loads

over a larger area, reducing stress concentrations.




What is the importance of torque in bolted connections?


✔✔ Torque is important because it directly influences the tension applied to the bolt, ensuring

that the bolt provides the correct clamping force for the joint.




Why is it critical to use washers in bolted connections?


✔✔ Washers distribute the load of the nut or bolt head over a larger surface area, reducing the

risk of damage to the material and improving load distribution.




1

,What is the difference between slip-critical and bearing-type bolted connections?


✔✔ In slip-critical connections, friction between surfaces prevents movement, while in bearing-

type connections, the bolts resist shear forces through direct bearing on the bolt shank.




How does corrosion affect bolted connections?


✔✔ Corrosion can weaken bolted connections by degrading the metal surfaces, reducing the

bolt's effective diameter, and compromising the joint's overall strength.




Why is it necessary to inspect bolt tension during installation?


✔✔ Inspecting bolt tension ensures that the bolts are properly tightened, preventing under- or

over-tensioning, which can lead to joint failure or bolt fatigue.




How does temperature influence the performance of bolted connections?


✔✔ Temperature changes can cause expansion or contraction in bolts and connected materials,

potentially loosening or overstressing the bolts if not properly accounted for.




What role do lubricants play in bolting?


✔✔ Lubricants reduce friction during tightening, helping to achieve the desired bolt tension

without damaging the threads or overstressing the bolt.

2

,What is the purpose of conducting a rotational capacity test for bolts?


✔✔ A rotational capacity test ensures that bolts can withstand installation stresses and torsion

without failing, verifying their quality and suitability for structural applications.




How does the installation sequence affect the integrity of a bolted connection?


✔✔ The installation sequence is critical because tightening bolts in a specific order ensures even

load distribution across the joint, preventing localized stress concentrations.




Why is it important to consider thread engagement when designing bolted connections?


✔✔ Proper thread engagement ensures that the bolt and nut can effectively transfer loads,

reducing the risk of stripping the threads and ensuring the connection's strength.




What is the role of direct tension indicators in bolted connections?


✔✔ Direct tension indicators provide a visual or mechanical way to confirm that the correct bolt

tension has been achieved during installation.




How does bolt grade impact its application in structural bolting?




3

, ✔✔ Different bolt grades indicate varying material strengths, with higher-grade bolts being used

in applications requiring greater strength and load-bearing capacity.




Why must bolts be tightened in a star or cross pattern in large flange connections?


✔✔ Tightening bolts in a star or cross pattern ensures even compression of the gasket or joint

surfaces, reducing the risk of leaks or uneven load distribution.




What is the significance of snug-tightening in bolt installation?


✔✔ Snug-tightening ensures initial contact between the connected surfaces, allowing for even

distribution of loads before full tensioning of the bolts.




How do environmental factors like moisture affect bolted joints?


✔✔ Moisture can lead to rust and corrosion, weakening the bolts and compromising the integrity

of the joint over time, especially in outdoor or marine environments.




What is the function of a turn-of-nut method in bolt tensioning?


✔✔ The turn-of-nut method involves rotating the nut a specific amount after snug-tightening to

achieve the desired bolt tension without the need for direct tension measurement.




4

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