×
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

Ram Concept Problem

thread1342-288287

Ram Concept Problem

Ram Concept Problem

(OP)
Hey guys,
We are trialling ram concept and keep encountering a problem. Im doing the most basic of slabs (say 2m square, 200 thick), supported on columns in each corner. Before I run the design I put in N20@300 top and bottom for reo, with the top bars cogged 90 degrees and the bottom bars straight.

Even with this huge overkill of reo it keeps adding program reinforcement to each face and when I check the detailed status it says 9.4.1 is governing, which in AS3600 is the min reinforcement requirements. Obviously in reality this is satisfied, so I am not sure what is going wrong? I have unchecked the "consider as post tensioned" box for all strips.
Cheers

RE: Ram Concept Problem

If the design strips extend out to the very edge of the slab, and if there is any moment at that point, then the code will require some minimum rebar. But the user bars might not be fully developed (or can't be developed) so the program adds more reinforcement, maybe anchored bars.  I usually find it OK to pull the design strips back from the edge a few inches (maybe 15 cm) just to avoid this ambiguous condition.

There are other possibilities, of course, like a problem with the user defined bars not being modeled properly, but that's the most common issue.

Seth Guthrie
 

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

Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now
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