×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Are you an
Engineering professional?
Join Eng-Tips Forums!
• Talk With Other Members
• Be Notified Of Responses
• Keyword Search
Favorite Forums
• Automated Signatures
• Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

#### Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

# Wall Panel Vertical Load Distribution

 Forum Search FAQs Links MVPs

## Wall Panel Vertical Load Distribution

(OP)
I'm trying to verify load distribution through a wall panel. Say I have a portal frame with distributed load. Moment makes sense. Now if I take the same load applied on top of a wall panel, the resultant moment to a beam supporting the wall panel is much less than anticipated.

Where is the difference coming from? Does the wall panel itself act like a deep beam and not trickle down the vertical load to supporting frame? Would it be better to attach the frame and wall using rigid elements at discrete points over the length of the beam?

The purpose of this thought experiment is to capture the removal of a first story load bearing wall and support it now with frame. A new frame would support a second floor load bearing wall. Handcalcs are fine, but I'm more curious than anything why the discrepancy here.

### RE: Wall Panel Vertical Load Distribution

All that's happening is that the wall is significantly stiffer than the beam that's supporting it.

Totally natural and understandable from a FEM standpoint. Now, as engineers we often want to design that beam as if it's fully supporting the wall, and the wall has little stiffness of its own. How to do this?

I can think of a few ways:
1) Don't model the wall, instead just model the loading that the wall imparts on the beam.
2) Model the wall but, soften it a good amount (by adjusting E and G) so that it is not so rigid. Or, maybe adjust some of the Icracked values for the wall to soften it another way.
3) Your rigid link method might work. Though the load will still probably "arch over" the middle of the beam. So, this would likely only be a partial solution.
4) Maybe do a hand calc for the beam design instead. This is an example where the "FEM reality" may be different from the "design reality" that you want based on engineering judgment. Sometimes there isn't a great way around that.

### RE: Wall Panel Vertical Load Distribution

(OP)
Thanks Josh. Make sense.

#### Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

#### Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

#### Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!

Close Box

# Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

• Talk To Other Members
• Notification Of Responses To Questions
• Favorite Forums One Click Access
• Keyword Search Of All Posts, And More...

Register now while it's still free!