Working out wind shear in dams & retaining walls

[boxcar]

Hey, got a bit of a problem; got a few questions on wind Shear in Dams & retaining walls. Can anyody help

http://img296.imageshack.us/img296/9366/image0003xb2.jpg

Thanks
Andy.

 

[PhanthomJay]

Yes, but you have to first show some work before we can assist. I assume you are familiar with bending and axial stresses?

 

[boxcar]

wind shear

Why yes I am familiar with bending and axial stresses.

By looking at the efect of the axial load and the load caused by bending seperately and then giving the combined result we can get this.

I believe the first answer to be 0.34 kn/m, the second to be 48kn, the third to be 67.4, 35.6kn/m and the forth to be 31.4kn - 36.2n/mm

Im not sure how to do the working out.

Any help would be great.
Cheers Pal.

 

[PhanthomJay]

Yes, these problems are similar in that you must calculate both axial and flexural stresses and add them together to get the results, but you must show an attempt at your work. In problem 1, start by calculating the axial stress at the base. What causes the axial stress? What causes the bending stresses? How do you calculate those stresses?