×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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

Jobs

Seismic vertical loads on concrete ringwalls

Seismic vertical loads on concrete ringwalls

Seismic vertical loads on concrete ringwalls

(OP)
I have a steel storage tank which is required to be anchored because the J factor exceeds the limit for unanchored tanks. I am using the AWWA code. It is 55 feet in diameter, 55 feet high and has an OTM of 14,436 ft-kips. The anchor bolt circle is 55.5 feet in diameter. I want to use a concrete ring wall to support the tank and I want to design the ring wall in a per foot basis. I am using 18 anchor chairs and ASTM F1554 Grade 55 anchors spaced at approximately 10 feet on center. What is the best way to calculate the seismic vertical forces on the ring wall in a per foot basis. W' = the dead weight of the shell + roof dead load reaction on the shell = 0.804 kip/ft or a total of 138.9 kips. The seismic uplift force: Ps = 4*14436/(18*55.5) - 138.9/18 = 50.09 kips net uplift.

Anyone have any suggestions?

RE: Seismic vertical loads on concrete ringwalls

I work with the whole circle shape, not on a per-foot basis.

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!


Resources

White Paper – Your Construction ERP RFP Checklist
Selecting business software for a medium to enterprise-sized construction concern is extremely challenging in large part because most enterprise resource planning (ERP) suites originated in the world of repetitive manufacturing and are therefore a poor fit for a project and asset-centric business. However, midsize to large contractors need the predictable, auditable processes that ERP delivers. 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