Second moment of area about the horizontal axis

[vtaela]

Could someone help me on how to calculate the second moment of area of the beam in the figure below?

Thank you

 

[tiny-tim]

hi vtaela!

divide it into parts, and add the moment of area of each part

show us what you get ​

 

[vtaela]

my calculations give me 172.8 *10^6 mm^4

is that correct?

thank you

 

[nvn]

vtaela: Excellent work. Your answer is correct.

 

[vtaela]

I am trying to find my local variables in order to calculate the shear flow! I have the local variables as shown below! Are my local variables set correct?

Thank you

 

[nvn]

Looks reasonable.

 

[Dzxcny]

I finished with this, look similar to what you got?

 

[Dzxcny]

Working out of ixx

 

[Dzxcny]

Flow diagram and calculation of s1

 

[Dzxcny]

Calc of s2, s3 and s6. The first picture i posted is calc for s4 and final value. Any idea how to do shear centre?