Structural Steel Design II: Welded Connections
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Questions and Answers

What is an advantage of using fewer pieces in structural steel design?

  • More welding procedures are required
  • Increased detailing time
  • Increased fabrication time
  • Time is saved in detailing, fabrication, and field erection (correct)

    • How many main types of welding procedures are used in structural applications?

  • Six
  • Five
  • Four (correct)
  • Three

    • What is another name for Shielded Metal Arc Welding (SMAW)?

  • Flux Cored Arc Welding
  • MIG welding
  • Submerged Arc Welding
  • Manual, stick, or hand welding (correct)

    • What is a characteristic of Gas Metal Arc Welding (GMAW)?

    <p>It is a fast and economical process (B)</p> Signup and view all the answers

    What is a feature of Flux Cored Arc Welding (FCAW)?

    <p>It uses a flux core (A)</p> Signup and view all the answers

    Which welding process may be automated?

    <p>Gas Metal Arc Welding (GMAW) (A)</p> Signup and view all the answers

    What is the primary method of performing structural welding?

    <p>By hand (B)</p> Signup and view all the answers

    Why are overhead welds often avoided?

    <p>Because they are slow and expensive to make (C)</p> Signup and view all the answers

    What is the role of gravity in the welding process?

    <p>It can speed up the welding process (D)</p> Signup and view all the answers

    What is the primary classification of welds based on?

    <p>The type of joint used (B)</p> Signup and view all the answers

    What is shown in Figure 5.2?

    <p>Weld positions (A)</p> Signup and view all the answers

    What type of stresses are used to control fillet welds according to the various specifications?

    <p>Shearing stresses (B)</p> Signup and view all the answers

    What is the desirable arrangement for welded connections?

    <p>Subjecting them to shearing stresses only (A)</p> Signup and view all the answers

    At what angle do fillet welds seem to fail when tested to failure with loads parallel to the weld axes?

    <p>45˚ (D)</p> Signup and view all the answers

    What is the strength of fillet welds assumed to equal?

    <p>Design shearing stress times the theoretical throat area (A)</p> Signup and view all the answers

    What is the maximum size of a fillet weld for a material with a thickness of 1/4 in or more?

    <p>1/8 in (B)</p> Signup and view all the answers

    What is the theoretical throat area of a fillet weld equal to?

    <p>Theoretical throat distance times the length of the weld (C)</p> Signup and view all the answers

    What is shown in Figure 5.4?

    <p>Theoretical throats of several fillet welds (B)</p> Signup and view all the answers

    Why is it desirable to keep the weld at least 1/16 in from the edge of a plate?

    <p>To make it easier to inspect the weld's dimensions (B)</p> Signup and view all the answers

    What is the minimum length of a longitudinal fillet weld connecting plates or bars?

    <p>The perpendicular distance between the plates (B)</p> Signup and view all the answers

    What is the minimum amount of lap required for a lap joint?

    <p>Five times the thickness of the thinner part (B)</p> Signup and view all the answers

    What is the minimum size of a fillet weld for a material with a thickness of over 3/4 in?

    <p>5/16 in (C)</p> Signup and view all the answers

    Why is it not recommended to have a weld larger than the material thickness less 1/16 in?

    <p>Unless the weld is specially built out (D)</p> Signup and view all the answers

    What is the purpose of determining the effective length of an end-loaded fillet weld in the AISC Specification?

    <p>To account for stress variations along the weld (B)</p> Signup and view all the answers

    What is the value of β when the actual weld length is greater than 300 times the weld leg size?

    <p>0.6 (C)</p> Signup and view all the answers

    What is the minimum tensile strength of E70 electrodes in the shielded metal arc process?

    <p>70 ksi (B)</p> Signup and view all the answers

    What is the direction of the load applied to the 1-in length of a 1/4-in fillet weld in Example 5-1?

    <p>Parallel to the weld length (B)</p> Signup and view all the answers

    What is the purpose of Example 5-3?

    <p>To present the design of a fillet welded connection (D)</p> Signup and view all the answers

    What is the factor that affects the determination of the effective length of an end-loaded fillet weld?

    <p>Ratio of weld length to weld leg size (C)</p> Signup and view all the answers

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