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

Welding anchor rod to anchor rod

Welding anchor rod to anchor rod

Welding anchor rod to anchor rod

I'm planning to extend some existing anchor bolts by welding additional rod to the top of bolt. I'm thinking of plug welding a sleeve to the top of the anchor bolt, and having the top of the sleeve threaded to thread in the new rod. I'm wondering if this seems reasonable or not, or if others have done something similat.

RE: Welding anchor rod to anchor rod

Threads are corroded to the point of being useless at this point... I'm wondering what a CJP weld to 1 1/2" AB would look like? Bevel to a pencil shape and weld?

RE: Welding anchor rod to anchor rod

Thanks desertfox - bolts are F1554 grade 36 equivalent, we will be inspecting chemical composition as well. I'm operating under the assumption they are weldable as the design drawings (1965) show the anchors welded to some plate.

RE: Welding anchor rod to anchor rod

The CJP would work as you described and I would ensure surface NDT of the weld region using either liquid penetrant or wet fluorescent MT.

RE: Welding anchor rod to anchor rod

Hi canwesteng

A word of caution if I might, my company installed some new/modified steel rolling equipment recently and the client wanted us to use the existing foundation bolts where possible however the original foundation bolts were installed in the 1950/1960's and we refused this request because we could not foresee what the condition the anchor bolts or the existing concrete was in. We ended up drilling new anchor bolt holes and grinding flush the existing ones.

“Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein

RE: Welding anchor rod to anchor rod

See section 2.11.3 Anchor Rod Projection Too Long or Too Short of AISC Design Guide 1 - Baseplate and Anchor Rod Design for discussion on this topic.

Are new baseplate holes and chemical anchors out of the question?

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


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