plate steel strength

[weron4u]

Does anyone know what the allowable shear stress is in plate steel. I'm hanging a load from an eye-hole cut in 4" square plate steel. I was wondering if it was 0.40Fy, or if that only applies to beams in bending.

 

[lesliehowell]

The sheer is determined by the amount of material that is left from the edge of the hole to edge of the material. A lot of this information is a simple look-up, or you can do like I have several times and that is send a email to your steel supplier. I downloaded several analisis software from steel suppliers that give you the information.

Sincerely yours,
Leslie H. Howell

Leslie H. Howell

http://www.howellconsulting.com

 

[weron4u]

Thanks Leslie, but I need to know what the allowable stress is in the steel. For Example...a beam in bending with proper lateral bracing has the allowable bending stress, Fb=0.66Fy. A beam with the proper web to thickness ratio has the allowable shear stress, Fv=0.40Fy. I need to know what the allowable shear stress is in plate steel. I've been using 0.40Fy, but I think that I'm being conservative.

 

[burtonli]

In AISC, allowable shear stress in 0.40Fy if don't need to consider stability.

 

[41Northwest]

Here is a site with design details and checks that may be of interest.

http://www.pdhonline.org/courses/s106/s106.htm