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

ASCE 7 - 16 - Wind Load on PT Concrete Tank

ASCE 7 - 16 - Wind Load on PT Concrete Tank

ASCE 7 - 16 - Wind Load on PT Concrete Tank

ASCE 7 standard gives equation for wind force: F=qz×G×Cf×Af, where area Af is structure's projection perpendicular to the force (that is Af=diameter x height). However I am not certain how to apply this force on my 3D model, logic dictates that, as per this code, you can apply it as pressure load just by dividing the force with Af. However, I am not convinced that this is the right approach, as the generally wind pressure distribution for circular object is more complex. I would like to compare it with Eurocode, where it is precisely defined how to distribute this load (which follows the basic thermodynamic logic when determining pressure coefficients (Attached figure)).

Question is: what is the right approach to define wind pressure load as per ASCE 7 (16)?

Replies continue below

Recommended for you

RE: ASCE 7 - 16 - Wind Load on PT Concrete Tank

You'll need to apply the wind pressure around the perimeter of your tank (presumably you've 3D modelled with some sort of shell element) in accordance with the given pressure/coefficient.

Apply the coefficient as a modifier, then include the basic wind pressure as a multiplier. That enables you to use the model for any wind load.


RE: ASCE 7 - 16 - Wind Load on PT Concrete Tank

Actually, I found procedure for determining external pressure coefficients in ASCE 7 -16, chapter 30.12.(for components and claddings - tank wall & roof pressures). In my opinion, these should be used to determine wind loads on 3D models.

When we talk about cylinder structures, constant pressure coef. cannot be used. There needs to be circumferential variation of wind pressure around shell.

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


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