×
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 ANALYSIS OF MONOPOLE TRANSMISSION TOWERS

SEISMIC ANALYSIS OF MONOPOLE TRANSMISSION TOWERS

SEISMIC ANALYSIS OF MONOPOLE TRANSMISSION TOWERS

(OP)
WHAT IS CURRENTLY BEING USED AS FAR AS THE ANALYSIS OF MONOPOLES CONCERNING SIESMIC LOADING. TIA/EIA IS NOT VERY HELPFUL, AND SPECIFIC CODES, I.E. UBC/BOCA ARE NOT VERY APPLICABLE TO MONOPOLE TYPE STRUCTURES. ARE THERE EUROPEAN GUIDELINES FOR THIS???

RE: SEISMIC ANALYSIS OF MONOPOLE TRANSMISSION TOWERS

Because the monopoles are often proprietary products I would assume that the seismic (vibration) design of the pole is up to the manufacturer.  It seems logical for the connections (unless they are specified by the manufacturer) to be designed by the enigneer as is the foundation.  As such, this problems seems almost text book in the application of base shear.  As for as any factors are concerned I believe that UBC had R factors for Non-building structures which include inverted pendulum type structures as well as a host of others.  Distributed mass cantilevers are included so if you don't want to lump mass at the top...

RE: SEISMIC ANALYSIS OF MONOPOLE TRANSMISSION TOWERS

TIA-222-G (Draft) contains seismic analysis provisions for all of the various types of towers. For poles up to 50 ft, you can use an equivalent static lateral force procedure. Above 50 ft you must use either modal analysis (spectrum response) or a time history analysis. Enough modes should be included to attain 85% mass participation. 222-G probably won't be out until the end of this year.

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