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!
  • Students Click Here

*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


ASCE7-10 - Table 12.2.-1 - Issue

ASCE7-10 - Table 12.2.-1 - Issue

ASCE7-10 - Table 12.2.-1 - Issue

Table 12-2-1 Page 60 of the ASCE7-10 Standard, under "Building Frame Systems". Looking at "Steel Ordinary Concentrically Braced Frames", Seismic Design Category "D".

It lists "35" with an "j".

Footnote "j" explains that these frames can be used up to a height of 60 ft where the dead load of the roof doesn't exceed 20 psf.

1.) Does this mean there are no restrictions between a height of 0 - 35 ft and a 20 psf roof dead load restriction between 35 - 60 ft?

2.) Or, does this mean the 20 psf dead load restriction applies to all any height up to 60 ft?

It seems to me, that #1 above is the correct interpretation. If #2 was the correct interpretation, the table would list "NP" with the "j" footnote.

I would like other, experienced peoples' interruption of this.

Can someone tell me, where within the code, they explain the proper interpretation of this table?

Thanks for your help

RE: ASCE7-10 - Table 12.2.-1 - Issue

I would see it as this:

1. ALL buildings with SOCBF systems in SDC D are limited to 35 ft. height.
2. HOWEVER, if your building:
a. Is single story, and
b. Roof dead load <= 20 psf, then
you can go to 60 ft.

So your option 1.

Check out Eng-Tips Forum's Policies here:
FAQ731-376: Eng-Tips.com Forum Policies

RE: ASCE7-10 - Table 12.2.-1 - Issue

I also vote option 1, and echo JAE's clarification that footnote j limits it to *single story* buildings up to 60 feet tall with roof dead load not exceeding 20 psf.

RE: ASCE7-10 - Table 12.2.-1 - Issue

I believe the intent is for hangar type structures. Also, metal building companies usually don't have multi-story applications and it was written for them. Just my $0.02.

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


White Paper - Considerations for choosing a 3D printing technology
The adoption of 3D printing into major companies’ product development life cycles is a testament to the technology’s incredible benefits to consumers, designers, engineers and manufacturers. While traditional production methods have limitations in manufacturability, 3D printing provides unparalleled design freedom due to the additive method of building parts layer by layer. 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