How to Find CG, MI, Ztop and Zbottom of the I section shown below?

[zalads]

Please explaing me how to find CG, MI, Ztop and Zbottom of the I section shown as attached here with.

[Ad Hoc]

Have you begun to study basic structures yet?

[zalads]

Yes, just started my studies can u pls advise me how to do this

[Ad Hoc]

Well first, you need to start a table with seven columns with these headings:

item, area (a), lever (h), ah, ah^2, k^2, ak^2

Then find the area, the lever of each item about a fix datum. Then calculate the 2nd moment of area for each item and finally its own inertia about its own axis. Add up the columns and by parallel axis theorem move the axis from assumed datum to the neutral axis.

If this does not make sense, then you require much more reading before advising further.

[Greybarn]

This is a second year of college level engineering problem. What year are you in your studies?

[gonzo]

Is the material homogenous?

[Yellowjacket]

Here is a link..

http://en.wikipedia.org/wiki/Parallel_axis_theorem