×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • 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.

Students Click Here

Staad Stress plot

Staad Stress plot

Staad Stress plot

(OP)
Furthermore there appears to be an error in Staad with respect to the sectional member stress plots. In many instances the plot 4 corner stress points do not match my Mathcad results. Of course this could be considered a failure on my programs ability to calculate the correct stresses, however. Upon further investigation, it would seem Staad Pro is using incorrect forces at the section for the stress calculations. What I have found is; if I print out the section forces and stresses using the Staad file list output, they are exactly the same as my program and give the exact 4 point stresses when combined. If I select the 4 points directly on the stress plot and list them on the Profile Stress Plot tab, what I have found is that the listed forces attributable to the calculated stresses are not correct and are for different sections than that selected (both MX and MY appear to be at different locations). The plot output also appears to be different to the forces shown when double clicking on the member in question and selecting the Shear Bending tab and inputting the section at which forces are required, making sure the correct load comb is selected at the section in question.

1, Has anyone noticed/experienced this issue ?.
2. Does anyone have an explanation apart from the Staad program using incorrect section forces ?

I also include a pdf which clearly shows what I am referring to.

Any comments would be well appreciated.
Replies continue below

Recommended for you

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.

Reply To This Thread

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

Click Here to join Eng-Tips and talk with other members! Already a Member? Login



News


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:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close