www.sefindia.org

STRUCTURAL ENGINEERING FORUM OF INDIA [SEFI]

 Forum SubscriptionsSubscriptions DigestDigest Preferences   FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups  RegisterRegister FAQSecurity Tips FAQDonate
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log in to websiteLog in to websiteLog in to websiteLog in to forum 
Warning: Make sure you scan the downloaded attachment with updated antivirus tools  before opening them. They may contain viruses.
Use online scanners
here and here to upload downloaded attachment to check for safety.

wind load on security walls - use of factor K1

 
Post new topicReply to topic Thank Post    www.sefindia.org Forum Index -> SEFI General Discussion
View previous topic :: View next topic  
Author Message
sprateek
General Sponsor
General Sponsor


Joined: 22 Sep 2014
Posts: 4
Location: chennai

PostPosted: Mon Sep 09, 2019 5:59 am    Post subject: wind load on security walls - use of factor K1 Reply with quote

dear all

we are designing a security wall of rcc frame of 3.0 mt height. While working out wind load as per is 875, i  am having a doubt regarding use of risk coefficient (k1) factor for walls. I will be grateful if same can be clarified.

As per is 875 table 1, for building and structures with low hazard to life factor k1 for 47 m/sec is 0.9 where as factor k1 is 0.71 for temporary sheds and boundary walls.  the mean design life for the above two cases is 25 years and 5 years. My doubt is we are designing a RCC security wall with approximate design life of 50 years. In this case, what value of factor K1, we should use .

thank you


regards


prateek sharma
Back to top
View user's profile Send private message
es_jayakumar
General Sponsor
General Sponsor


Joined: 24 Nov 2011
Posts: 1245
Location: Cochin

PostPosted: Mon Sep 09, 2019 8:41 am    Post subject: Reply with quote

Er. Sharma,
IS 875 (Part-3) : 2015 has, in the Note under Table-1 , given a ready-made formula for the calculation of coefficient k1, that takes care of different periods of design life of structures, which is self explanatory. For a design life of 50 years and basic wind speed of 47 m/sec, k1 works out to 0.99 (you also please check).

E S Jayakumar
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topicReply to topic Thank Post    www.sefindia.org Forum Index -> SEFI General Discussion All times are GMT
Page 1 of 1

 

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


© 2003, 2008 SEFINDIA, Indian Domain Registration
Publishing or acceptance of an advertisement is neither a guarantee nor endorsement of the advertiser's product or service. advertisement policy