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

building expansion joints

building expansion joints

building expansion joints

Can we space expansion joints 300 feet apart on a four story commercial structure in New York City if the joint is wide enough to accomodate expansion? The footprint of the structure ia approximately 550 feet x 250 feet. NYC Code indicates buildings longer than 250 feet require thermal force design

RE: building expansion joints

We've gone further than 250' numerous times.  (see AISC Manual in the front where they discuss EJ spacing for buildings).

If the city code requires the calcs, then do the calcs.  You have to accommodate the thermal movement in connections and attachments (veneer, partitions, etc.) to make sure you won't have pieces falling off your building.  Also, watch out for foundation settlements over long distances.

RE: building expansion joints

is it possible to blockwall footing 300mm above colum footing/base?

RE: building expansion joints

Assuming the project is steel construction.  I recommend you review Technical Report No. 65 -"Expansion Joints in Buildings" prepared by the Standing Committee on Structural Engineering of the Federal Construction Council, Building Research Advisory Board, Division of Engineering, National Research Council.  It is an older publication from the National Academy of Sciences dated 1974.  There is also more current information to supplement.

Even beyond the steel performance requirements.  You should still consider the foundation and finishes performance criteria.

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


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
The Great Project Profitability Debate
A/E firms have a great opportunity to lead the world into the future, but the industry’s greatest asset—real-time data—is sitting wasted in clunky, archaic ERP platforms. Learn how real-time, fully interactive dashboards in a modern ERP allow you to unlock data that will shape the future of the world. 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