## NCARB SS Study Guide - Question

Structural Layout Vignette and Multiple Choice

### NCARB SS Study Guide - Question

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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redbird11

Posts: 18
Joined: Tue Jan 13, 2015 11:23 am

### Re: NCARB SS Study Guide - Question

Attached is the solution!
Hope this helps!
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brownc13

Posts: 69
Joined: Wed Jan 28, 2015 3:19 pm

### Re: NCARB SS Study Guide - Question

Thank you brownc13!
redbird11

Posts: 18
Joined: Tue Jan 13, 2015 11:23 am

### Re: NCARB SS Study Guide - Question

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.
yavaughn

Posts: 29
Joined: Mon Sep 16, 2013 4:59 pm

### Re: NCARB SS Study Guide - Question

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!
brownc13

Posts: 69
Joined: Wed Jan 28, 2015 3:19 pm

### Re: NCARB SS Study Guide - Question

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.
yavaughn

Posts: 29
Joined: Mon Sep 16, 2013 4:59 pm

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