1. Jan 23, 2006

### thall88

An aluminum tube with an outside diameter of 1,000 in. will be used to support a 10-kip load. If the axial stress in the member must be limited to 30 ksi T or C, determine the wall thickness required for the tube. I used tau=shearing stress/area therefore 30(pie times 1-d)=10 but that is not correct Thanks

Last edited: Jan 23, 2006
2. Jan 23, 2006

### Chi Meson

3. Jan 23, 2006

### Pyrrhus

I believe the question refers to normal stress $\sigma$

4. Jan 23, 2006

### civil_dude

Also remember that stress divided by area is not what you want. You want LOAD divided by area to get stress.