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soft storey
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amit_sharma
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PostPosted: Tue Apr 26, 2011 2:57 am    Post subject: soft storey Reply with quote

what is soft storey??
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sauvirsingh
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PostPosted: Thu May 05, 2011 2:05 pm    Post subject: Reply with quote

SOFT STORY : IS A COLUMN BEAM ( FRAMED )STRUCTURE  WITHOUT INFILLED WALLS , MANY OF THE BUILDINGS  WERE COLLAPSED IN GUJRAT EARTH QUAKE DUE TO SOFT STORY.
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rajancivildesign@gmail.co
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PostPosted: Thu May 05, 2011 2:50 pm    Post subject: SOFT STOREY BUILDING Reply with quote

The column of soft storey meant for car parking  has to be designed for  2.5 times the actual column design moment as per IS 1893-2002 Part 1. Suppose if the building is covered by 3 sides of wall and one side open,  is it mandatory to multiply the column moment by 2.5 times. Experts  kindly comment on this as per codal provision.

V.M.RAJAN.
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rahul.leslie
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PostPosted: Thu May 05, 2011 4:09 pm    Post subject: Reply with quote

IS:1893, Cl.4.20:- "Soft Storey: It is one in which the lateral stiffness is less than 70 percent of that in the storey above or less than 80 percent of the average lateral stiffness of the three storeys above."

That's the definition. Hope it's clear

Rahul Leslie
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Madan Lal Bairwa
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PostPosted: Sat May 14, 2011 6:44 am    Post subject: for soft story Reply with quote

dear sir i want to cunfirm about below warning in staad out put
if any analysis of building showing warning of soft storey than v can accept it by designing column by 2.5 factor...or we must make the structure non soft story by increasing stiffness
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Naziya Ghanchi
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PostPosted: Mon Oct 27, 2014 4:22 pm    Post subject: Reply with quote

thanx for defination of soft storey.
anyone is aware of wear storey?
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Naziya Ghanchi
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PostPosted: Mon Oct 27, 2014 4:33 pm    Post subject: Reply with quote

*weak storey
weak and soft storey both are same or different?
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syed_A
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PostPosted: Fri Oct 31, 2014 9:15 am    Post subject: Reply with quote

For soft storey and weak storey you can refer IS1893 2002 Part I clause 4.20 and 4.25 for definition
bye
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nikhilagrawal
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PostPosted: Mon Nov 03, 2014 7:39 am    Post subject: Reply with quote

IS:1893, Cl.4.20:- "Soft Storey: It is one in which the lateral stiffness is less than 70 percent of that in the storey above or less than 80 percent of the average lateral stiffness of the three storeys above.
But in case of actual practice that is not posible it genrally vary from zone to zone.genarally in the earthquake
zone III that reinfocement in soft storey is same through the upaward column.
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ychodneker
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PostPosted: Mon Aug 03, 2015 6:43 am    Post subject: Re: soft storey Reply with quote

amit_sharma wrote:
what is soft storey??


Fig 4A to 4E on page 21 and 22 of IS 1893 (Part 1): 2002 has mentioned it in very much detail.
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