Single Angle Kick-Out Force 1

[Kuhladula]

I have been tasked with designing a 30" long single angle member (L1.75"x1.75"x8Ga.) to be used as a beam in lieu of a bent-up cold-form 1.25x1.25x12Ga. tube, and I am curious if anyone has any good references as to how to design an angle (resting on its legs) to take a downward force on the center of the member, aka the major principal axis. I am worried about deflection and the legs kicking out because it is not restrained against that deformation.

I'm somewhat fresh out of college, so any additional helpful tips/things to think about are also appreciated!

 

[KootK]

This has been my go to. As you're no doubt finding, it get's pretty complex in a hurry.

 

[Kuhladula]

@KootK

Thank you very much! I'll have to snag one sometime. Doesn't look like they're overly expensive.

 

[KootK]

Your most welcome Kuhladula. The first five years of my career were full of me obsessing over single angle problems. Brick angles, single angles used as beams. single angles used as columns and beam columns. It's a very complex topic and not handled in detail by most software. Sometime, i'd like to make a web tool to deal with it. That said, in practice, most SE's just take gross simplifications to speed up single angle design, me included.

 

[lemmiwinksownz]

To piggy back off KootK, single angles do get complex quickly. I know your objective is to use this as a beam, but even braces or compression members can become a problem. I used to have a boss who would always neglect the moment induced on an angle by axial forces. Long story short, I try to specify double angles where and when I can.

 

[r13]

Since you are fresh out of college, you shouldn't mind to pay a small tuition for getting familiar with the aspects of the subject design/check. Here is an article from AISC, which could be a good starter (no cost if you are member). Link

 

[Kuhladula]

@Lemmiwinks: Thank you! We've decided to do some in-house testing on the member to see if it fits our needs because there are lots of unknown variables in terms of loading conditions.

@Retired: I am not a member, but we have someone who is within the office. Thank you for the link! I'll add it to my ever-growing list of documents to file through.