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


Duration factor k1 in Timber Code

Duration factor k1 in Timber Code

Duration factor k1 in Timber Code

What does everyone use for k1 for wind loads. Table 2.7 says wind gust and instantaneuos are 5 secs duration and gives k1 for timber members and fasteners (k1=1.0 for members and 1.14 for fasteners). Whereas the Timber designers Handbook HB108 says that ultimate wind gusts (Vu) taken from AS1170.2 are 3 seconds duration and increases the value of k1 (k1=1.15 for members and 1.30 for fasteners).

All opinions are welcome.

RE: Duration factor k1 in Timber Code

1.0 and 1.14 is correct.
Table 2.7 used to be 1.15 & 1.30 until Amendment 4 (2002).
It was changed when the new wind code was introduced.

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!


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