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.

Foundation depth for building with basements

 
This forum is locked: you cannot post, reply to, or edit topics.This topic is locked: you cannot edit posts or make replies. Thank Post    www.sefindia.org Forum Index -> E-conference on IS 16700 13th March to 18th March 2018
View previous topic :: View next topic  
Author Message
hemalmistry
...
...


Joined: 01 Jul 2009
Posts: 70

PostPosted: Tue Mar 27, 2018 5:48 am    Post subject: Foundation depth for building with basements Reply with quote

For buildings with basement/podium
Can we say that
(1) If basements are connected with tower, foundation depth includes basement height provided that backstay effect considered. Stability checks can be performed at podium (backstay diaphragm) level and not at foundation level.
(2) If basements are separated from tower with seismic joint, foundation depth does not include basement height.
According to chinese code JGJ 6-2011 (Technical code for tall building Raft foundations and box foundations), consideration of basement as embedded  part of building depends on combination of following factors:
(1) Type of foundation (Raft, piled raft, box, piled box)
(2) Structural system of tower (frame, frame+shear wall, shear wall etc.)
(3) No. of basements (single or multi)
(4) Relative lateral stiffness of basement floors.
(5) Distance between basement wall and main exterior structural wall of tower.

Regards
hemal
Back to top
View user's profile Send private message
alpa_sheth
...
...


Joined: 26 Jan 2003
Posts: 281

PostPosted: Wed Apr 25, 2018 7:37 am    Post subject: Re: Foundation depth for building with basements Reply with quote

Hemal:

To answer your query,
If extended basements are separated from the tower by seismic joint, the foundation depth still includes basement. Its just that there is no backstay effect.

Hope I have understood your query and responded.

regards,
Alpa

hemalmistry wrote:
For buildings with basement/podium
Can we say that
(1) If basements are connected with tower, foundation depth includes basement height provided that backstay effect considered. Stability checks can be performed at podium (backstay diaphragm) level and not at foundation level.
(2) If basements are separated from tower with seismic joint, foundation depth does not include basement height.
According to chinese code JGJ 6-2011 (Technical code for tall building Raft foundations and box foundations), consideration of basement as embedded  part of building depends on combination of following factors:
(1) Type of foundation (Raft, piled raft, box, piled box)
(2) Structural system of tower (frame, frame+shear wall, shear wall etc.)
(3) No. of basements (single or multi)
(4) Relative lateral stiffness of basement floors.
(5) Distance between basement wall and main exterior structural wall of tower.

Regards
hemal
Back to top
View user's profile Send private message
Display posts from previous:   
This forum is locked: you cannot post, reply to, or edit topics.This topic is locked: you cannot edit posts or make replies. Thank Post    www.sefindia.org Forum Index -> E-conference on IS 16700 13th March to 18th March 2018 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 cannot 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