NCARB SS Study Guide - Question

Structural Layout Vignette and Multiple Choice

NCARB SS Study Guide - Question

Postby redbird11 » Thu Dec 07, 2017 5:36 am

In the NCARB provided exam guide for SS, question #5 asks you to find the section modulus of a wide flange. I cannot seem to come up with the same answer they have. Can someone help explain how to solve the problem? Their answer is 57.3 in^3. I have attached an image of the question.

Thanks!
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Re: NCARB SS Study Guide - Question

Postby brownc13 » Thu Dec 07, 2017 3:41 pm

Attached is the solution!
Hope this helps!
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Re: NCARB SS Study Guide - Question

Postby redbird11 » Thu Dec 07, 2017 5:55 pm

Thank you brownc13!
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Re: NCARB SS Study Guide - Question

Postby yavaughn » Fri Dec 08, 2017 2:12 pm

brownc13 wrote:Attached is the solution!
Hope this helps!


Part of step 2 is cover. Can you tell me what the equation is that is covered? Thank you in advance.
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Re: NCARB SS Study Guide - Question

Postby brownc13 » Fri Dec 08, 2017 2:42 pm

Yavaughn, my mistake I didn't realize that when i postes.
Step 2:
S=I/C
Section Modulus=I steel/centroid distance
I=286.66 in^4
c= 5 in
Equation
S=286.66 in^4/5 inches =57.3 in ^3

Hope this helps clarify the rest!
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Re: NCARB SS Study Guide - Question

Postby yavaughn » Fri Dec 08, 2017 2:44 pm

brownc13 wrote:Yavaughn, my mistake I didn't realize that when i postes.
Step 2:
S=I/C
Section Modulus=I steel/centroid distance
I=286.66 in^4
c= 5 in
Equation
S=286.66 in^4/5 inches =57.3 in ^3
Hope this helps clarify the rest!




Thank you brownc13! I understand to solve it now.
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