×
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!
  • Students Click Here

*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

Jobs

Two-Way Slab Equivalent Frame Method

Two-Way Slab Equivalent Frame Method

Two-Way Slab Equivalent Frame Method

(OP)
I am working on analyzing an existing exterior two-way slab (circa 1968) with drop panels and am looking to determine the design moments and capacities of the slab based upon current code requirements. This slab has been subjected to some significant weathering effects and most likely some deterioration so reduction in capacity from the original design is likely. However, the architect is pursuing options to reduce the live load requirements on the slab.

Since this is new to me, I am looking to do the analysis by hand using the equivalent frame method. Direct design method was ruled out because adjacent spans are less than 1/3 of the max span, which is a requirement in the DDM. I have read up on the EFM quite a bit and have replicated design example 20.1 from the PCA Notes on 318-08 up until the frame moments are adjusted to the face of the support. I am unsure how the shear diagram was calculated in the attached example. I suspect it has to do with unbalanced column moments, but I am unsure. Any guidance on how to obtain these values?

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!


Resources