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.

number of secondary beam

 
Post new topicReply to topic Thank Post    www.sefindia.org Forum Index -> New Members make Test Posts
View previous topic :: View next topic  
Author Message
diamond_n
SEFI Member
SEFI Member


Joined: 12 May 2020
Posts: 3

PostPosted: Tue May 12, 2020 9:36 am    Post subject: number of secondary beam Reply with quote

Secondary beam are  provided  in order to divided the slab into small module so as to   check the deflection and  limit the design depth of slab . So is there any criteria for number of  secondary beams in a slab that should be connected to primary beam ( or number of secondary beam that divide a slab)
Back to top
View user's profile Send private message
es_jayakumar
General Sponsor
General Sponsor


Joined: 24 Nov 2011
Posts: 1408
Location: Cochin

PostPosted: Thu May 14, 2020 1:49 am    Post subject: Reply with quote

You can provide secondary beams in such a fashion that they divide the big size slab into smaller size panels of span (width) 3m to 4m.

E S Jayakumar
Back to top
View user's profile Send private message
diamond_n
SEFI Member
SEFI Member


Joined: 12 May 2020
Posts: 3

PostPosted: Thu May 14, 2020 7:19 am    Post subject: Reply with quote

Thank you sir,  for  your  valuable reply  but  I want a further clarification regarding division of slab in following 2 cases  :

1. Diving the slab(6.7m) into two smaller  parts(3.35 m each ) by a secondary beam, which than passes through the mid point ( high bending moment )  of the primary beam  

2.Dividing the slab(6.7m) into three smaller parts by two secondary beam

Both the conditions  are practically feasible , but in the 1st case secondary beam passes through the primary beam in midpoint ( high bending moment) whereas in 2nd case it doesn't passes through mid point .
So taking into  account of structural stability, would  it be preferable to consider the 2nd case (wrt to 1 st case) to implementing in practical situation.
Back to top
View user's profile Send private message
es_jayakumar
General Sponsor
General Sponsor


Joined: 24 Nov 2011
Posts: 1408
Location: Cochin

PostPosted: Thu May 14, 2020 7:44 am    Post subject: Reply with quote

I would advocate provision of a single secondary beam, in consideration of the increased cost of concrete, steel & form-work of an extra beam, even though the main beam will experience a slightly  increased BM.

E S Jayakumar
Back to top
View user's profile Send private message
diamond_n
SEFI Member
SEFI Member


Joined: 12 May 2020
Posts: 3

PostPosted: Thu May 14, 2020 8:09 am    Post subject: Reply with quote

thank you sir for your valuable  advice.
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 -> New Members make Test Posts 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 can 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