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Expansion Joints In Buildings.

 
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ranna
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Joined: 26 Jan 2003
Posts: 75

PostPosted: Tue Jan 27, 2004 3:20 am    Post subject: Expansion Joints In Buildings. Reply with quote

Dear Basant k.satpathy
can you throw some light on relief joints or slip joints in the skin of the bldg in
the vertical direction

bsatpathy@dlrgroup.com wrote:

Quote:
The buildings do experience thermal deformations in all directions.  The
amount of thermal deformation relates directly to the temperature variation
and the exposed surface area of the structure.

Expansion joints are provided in building to relieve potential build up of
thermal stresses from these thermal deformations.  Generally it is preferred

to relive these stresses than to integrate them into the building design.

When considering thermal deformations in horizontal dimensions, restraints
from building foundations anchored in the ground also need to be considered.

Height restraints may not be a factor in the vertical application.

As the buildings get larger in footprint and taller in height, consider
these
thermal movements (and shrinkage if applicable) to locate expansion joints
in
the horizontal dimension, and similarly locate any relief joints or slip
joints
in the skin of the building in the vertical direction.

Sincerely,

Basant K. Satpathy MS. PE.
Senior Associate in the Firm
DLR Group
400 Essex Court, Regency Park
Omaha, NE 68114
402.393.4100
402.393.8747 (fax)
bsatpathy@dlrgroup.com


----------------------------------------------------------
From: malay.kumar@total-environment.com
Subject: Expansion Joints In Buildings.
Date: 24/01/04
Time: 09:24:10
----------------------------------------------------------
Hi All,
As we all know that Code recommends us to provide expansion joint
in horizontal RCC member beyond certain limit, in view of the potential
impact of the temperature - produced dimensional changes in the Structural
integrity . I wonder what is to be done for the Vertical RCC members
(Columns).
Usually we don't  practice providing such Expansion joints for Columns, rite
?
Why is it so ? Aren't the Columns (which are assumed to be fixed at one
end) subjected to thermal deformations ? Do let me know!

Regards
Malay.

------------------------------------------------------------
Total Environment Building Systems Pvt Ltd, Bangalore, India

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PostPosted: Tue Jan 27, 2004 4:19 am    Post subject: Expansion Joints In Buildings. Reply with quote

Rightly said Mr. Basant K. I never knew much about Slip Joints Sad . By the
way what's the criteria for  providing such joints ? I mean upto what height
of a building  can we ignore such joints ? And are there any specific
location where such joints are to located ? And regarding Expansion joints
also different books says different things : some says it's necessary to
have an exp. joint  if the lenght of the building is more then 40 mts in
plan , some says 60 mts. and so on ...

Regards
Malay
Phone : +91-80-5219007, 51154711/12/13 Extn : 602
Mobile : +91-9845152574
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