×
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

Wind loading on irregular roof

Wind loading on irregular roof

Wind loading on irregular roof

(OP)
Hi,

I am often faced with the problem of developing wind loads using ASCE 7 for irregular shaped roofs. It seems strange that ASCE has no fixed procedure to deal with irregularities when these are more common than regular roofs in real life.

Please refer to my attachment for the specific case I'm referring to. I'm using chapter 30, Fig 30.5-1 in ASCE 7-10 to determine wind loading on flush mounted solar panels on this roof (as indicated in red in the drawing). I have a couple of questions:

1) Am I using the correct Wind method in ASCE to size the attachment for the solar panels
2) Using ASCE 7-10, Fig 30.5-1, how can I determine
a) Mean roof height h: Would this be the mean roof height for every single part of the roof? Including the protruding tower at the end? Or would it only include the sloping part highlighted in red?
b) To determine the "Least horizontal Dimension, again should I use the entire building or just the part where the panels occur? This can also be problematic for other, more irregular buildings. This would include L-shaped Hip/Gable roof buildings, for example

http://files.engineering.com/getfile.aspx?folder=4...
http://files.engineering.com/getfile.aspx?folder=d...

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