×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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

Reinforced Concrete Joint Condition

Reinforced Concrete Joint Condition

Reinforced Concrete Joint Condition

(OP)
I have encountered some books emphasizing that there is no fully-fixed or hinged joint conditions in reinforced concrete. On the other hand, steel structures may give us better understanding through joint connections (bolting and/or welding).
I am aware that RC joint condition has something to do with assumptions during analysis and detailing of rebars. But may I have more insights to better address this confusion.

Thank you.

RE: Reinforced Concrete Joint Condition

It's more difficult with concrete, but you can develop a better degree of fixity than many take advantage of. It depends to some extent on the manner of construction. If, for example, you have an elevator shaft with right angle walls, with a slab attached to the walls, and the construction sequence is that the slab is cast over the concrete wall and a keyway is not used and the next elevator wall is cast over the concrete slab 'pinching' the slab between the walls, I would treat the slab as being nearly 'perfectly' fixed at the wall. If you have a concrete beam cast into a wall and you can develop the reinforcing, then as long as the beam is shallow compared to the wall, I would normally consider that as being fixed... but, depending on circumstances, may add a little more bottom steel to the beam...

Dik

RE: Reinforced Concrete Joint Condition

(OP)
Thank you Dik for bringing your actual experience to explain this confusion. I definitely agree that slabs and beams cast monotonically with reinforced walls shall be assumed fully fixed to supports (walls).
How about [1] beams/girders cast monotonically with columns (given that they are part of moment resisting frames) and [2] moment resisting columns with their supporting footings?

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