Interactive Sample Project: Pedestrian Bridge

Step 10: Concept Design Analysis

Valuable Information
Sreq = in3

  • Comparison of S and the minimum is required
  • Is S greater than or equal to Sreq?

    Correct:

    Incorrect:

    S =  in3  <  Sreq =  in3
    Because section modulus S is insufficient given the required section modulus Sreq, you cannot proceed with this design, but you may alter the design in the following ways:
    1. To reduce Sreq, return to Step 2: Materials Selection and choose a stronger material,
    2. To increase S, return to Step 1: Concept Selection and select a different type of cross-section, or
      return to Step 8: Beam Selection and select larger dimensions.
< < Back to Step 9: Section Properties Continue to Step 11: Concept Design Analysis >>
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This material is based upon work supported by the National Science Foundation under Grant No. 0633602. Any opinions, findings and conclusions or recomendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation (NSF).

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