Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Return Period for Wind Loading 4

Status
Not open for further replies.
dik

dik

Structural
Joined
Apr 13, 2001
Messages
26,129
Location
CA
Does anyone have a quick method or adjusting the wind load based on a return period less than that of the normal 30 year, 50 year or 100 year durations?

Thanks in advance,

Dik
 
Sort by date Sort by votes
I thought it was 1.0 for 100 year and 0.7 for 10 year.
 
Upvote 0 Downvote
ASCE 7 Commentary for Chapter 26 goes into return period comparisons in their explanation of the change from 50 year in 2005 to the 300, 1700, etc. in 2010.
 
Upvote 0 Downvote
Thanks, gentlemen...

Dik
 
Upvote 0 Downvote
A search on the web I found this, Link. I think you can find similar record for the local that you are interested in.
 
Upvote 0 Downvote
ASCE37-14 has wind speed modification factors for return periods under 5 years.
 
Upvote 0 Downvote
skeletron:

Thanks very much, I think that was the formula I had seen or one of the same form. I'll check the NBC tonight.

Dik
 
Upvote 0 Downvote
sbisteel:

Thanks to you also... I'll try to dig up a copy and see what it says.

Dik
 
Upvote 0 Downvote
sbisteel:
Found a copy... it has the info I can use. Thanks.

skeletron:
I've coded the formula into SMath and will play with it this evening.

Thanks, gentlemen

Dik
 
Upvote 0 Downvote
Just an FYI @dik: V is in m/s. They define q = 0.00064645 V2 in the previous page. q is in kPa.
 
Upvote 0 Downvote
Thanks skeletron, that was my next step... I work in both SI and Imperial, but think in Imperial... just too old. I'll post the SMath program when completed... have some real work to do now...

Dik
 
Upvote 0 Downvote
Status
Not open for further replies.

Similar threads

Greenalleycat
  • Question Question
Do you ever consider a '1 in 1 year return period' wind
Replies
14
Views
2K
phamENG
phamENG
AH_AK
  • Question Question
Lateral wind loading on open carport frame (ASCE 7-16)
Replies
3
Views
7K
AH_AK
AH_AK
Superstar123
  • Question Question
Reduced Wind Load for Wind and Ice Combination
Replies
1
Views
7K
FenceEng
F
duckhawk
  • Question Question
ASCE 7-16 15.4.4 - Approximating Seismic Period
Replies
11
Views
11K
Celt83
Celt83
Lion06
  • Locked
  • Question Question
Wind Loading Question
Replies
8
Views
776
Lion06
Lion06

Part and Inventory Search

Sponsor

Back
Top