×
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

steel framing

steel framing

steel framing

(OP)
I was looking at roof framing plan, and it includes the following W21x55 (+2 1/2"). what does that mean (+2 1/2")?

RE: steel framing

It could mean lots of things, but more than likely there's another note somewhere that says "top of steel elevation is XXX unless otherwise noted." That beam is set 2.5" higher than the others. I'm going to guess and say that it runs parallel to a bunch of open web steel joists (probably with a K designation).

RE: steel framing

Probably means, as phamENG said, it's 2 1/2" deeper than the other beams, or deeper than some other option at that location.

Note: You may want to edit the text of your post to match the graphic, celeron8. (2 1/2" instead of 2 1/5") Before I looked at the graphic, I was about to move on, having no idea what +2 1/5" would be.

Rod Smith, P.E., The artist formerly known as HotRod10

RE: steel framing

(OP)
Thank you. I edited the original post. It might be elevations, cross section is not showing it clearly. but that is the best explanation

RE: steel framing

This notation is used in erection drawings. In general the elevation of TOS (top of steel ) is given for each floor with general notes. The exceptions for each member is indicated by giving TOS distance (+) above or (-) below.

In this case , W 21X55 (+2 1/2in ) means, the TOS level for this member +2.5 inch higher than the general floor TOS elevation. For instance, if Elevation TOS =60'-2.5", the TOS elevation of W 21X55 (+2 1/2in ) member will be =60'-5".

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