(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I have attached a figure showing beam bending around 2 axis. I need to calculate section modulus Sx and Sy but seem to be getting the major and minor axis confused. I guess the problem comes in when I go to select which term is squared in my equation below.

2. Relevant equations

S = 1/6 * b * h^2 for rectangular cross section

3. The attempt at a solution

Sx = (70*750^2)/6 = 6.56E+6

Sy = (750*70^2)/6 = 6.13E+5

If this is correct, could you please help clarify why b and h are what they are in the section modulus equation for 1) major axis and 2) minor axis.

Thanks.

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# Homework Help: Section Modulus, major & minor axis

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