Area Member Loading Question 1

[AuEng99]

I am trying to understand this distribution direction pulldown within Area Member loading (see attachment). I am trying to represent a live load, so I am wondering if I should select perpendicular to A-B, Two Way or something else? Also, what should I select for a wind loading? I looked through some of the youtube videos and they selected two way in one of them.

 

[jayrod12]

It depends on how you are expecting your loads to be distributed. Two way means that members in both directions will attract their trib width in load. A-B and the like are all one way.

 

[AuEng99]

Which would be the most conservative loading?

 

[jayrod12]

That again depends on the situation. and the framing orientation.

 

[JoshPlumSE]

Attached is an excerpt from our RISA-3D training manual on member area loads. You might find this helpful in explaining the concept.

 

[JoshPlumSE]

Oh, and here is the RISA-3D model referenced in that section.