×
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

Minimum plate size for joist bearing on masonry

Minimum plate size for joist bearing on masonry

Minimum plate size for joist bearing on masonry

(OP)
I'm looking for a rule of thumb more than anything. I've calculated the required size of 6x6 for a joist bearing plate on masonry but everyone tells me that is smaller then they have seen. Does anyone know a general rule of thumb like "don't use less than a 6x10"?

Thanks for the help on this and everything else!

T

RE: Minimum plate size for joist bearing on masonry

The minimum should be in your joist catalog or in the joist spec.  If it works for bearing on the masonry and the thickness is sized correctly I see no reason to make it bigger.  Our typical size is a 5x8 I think, that does give more area than the 6x6.  You want wider so that there is less required precision in the plate placement.  If it's off by an inch or two it won't kill you.

RE: Minimum plate size for joist bearing on masonry

No rule of thumb needed - the Steel Joist Institute states the (nominal) minimum requirements in their specification. You can download the specification (free .pdf version), "41st Standard Specifications & Load Tables For Steel Joists & Joist Girders" from this link
http://www.steeljoist.org/publications/
You will have to register to get it, but I have not seen any "consequences" to registration since doing so last year.

For K-Series: 4"x6", see page 17

For LH- & DLH- Series: 6"x9", see page 48

For Joist Girders: 6"x9", see page 67

The bearing stress on the masonry & plate thickness have to be determined in accordance with AISC (ASD) requirements. Smaller bearing plates are allowed with certain restrictions.

www.SlideRuleEra.net

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