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expansion joint and sepration gap

 
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padamkr1
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Joined: 26 Jan 2003
Posts: 18

PostPosted: Mon Dec 06, 2004 5:28 pm    Post subject: expansion joint and sepration gap Reply with quote

DEAR  SEFIANS,

HELLO !

I WOULD LIKE TO CLARIFY  THE FOLLOWING POINTS REGARDING EXPANSION JOINT/SEPARATION GAP IN A MULTISTOREYED BLDG.

- IS IT NECESSARY TO PROVIDE EXP JOINT IN RAFT AND RETAINING   WALLS  ALSO IN A DOUBLE BASEMENT OF 15 STOREYED BLDG..

-WHAT PRECUTIONS SHOULD BE TAKEN  IF EXP JOINT IS NOT PROVIDED IN 70 MTR LONG BLOCK OF A BLDG . DOES WIDTH OF BLDG PLAY ANY PART IN DECIDING THE LOCATION OF EXP JOINT

- SEPRATION  GAP AS PER  IS-1893 -2002 SHOULD BE R TIMES THE  MAX DEFLECTION  (R/2+R/2)  FOR TWO BLOCKS . SOMETIMES IT COMES OUT TO BE 300 MM , IS IT PRACTICABLE  TO PROVIDE/TREAT  THIS MUCH WIDTH  OF JOINT?

THANKS

PADAM KUMAR

DELHI



padam kumar

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suraj
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Joined: 17 Apr 2008
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Location: NCR Faridabad, E mail suraj_engineer@yahoo.co.uk

PostPosted: Tue Dec 07, 2004 4:46 pm    Post subject: expansion joint and sepration gap Reply with quote

Expansion/Movement Joint – Buildings



It is very specific question but the answer is not very specific

Since it is the monolithic slab area used in the design  of the 3 dimensional analysis of the proposed structure that shall dictate the empirical understanding of the location of the movement joint in any buildings as well as the number of the joints continuity

To my understanding it is the experience & concept of the engineer’s design capability to decide how many square meters of the slab area is permissible to form the joint in continuous structures particularly up to multistory class



The rafts may be given movement provision but not essential

Columns in both structures can be given the joint but footing can be one for  two columns/combined

Generally 900 to 1000 sqm is the limit but due to improved quality & grading of the concrete & controlled use, the area may be increased keeping the other building distant to let the building adopt sway action due to seismic stresses



Should u depend on the code formula or some other formula, I have no comments since codes cannot solve all engineering problems. Engineering rests with individual intelligence & concept

Eng Suraj Singh PE

Doha/Qatar


padamkr@yahoo.co.in wrote:
DEAR SEFIANS,

HELLO !

I WOULD LIKE TO CLARIFY THE FOLLOWING POINTS REGARDING EXPANSION JOINT/SEPARATION GAP IN A MULTISTOREYED BLDG.

- IS IT NECESSARY TO PROVIDE EXP JOINT IN RAFT AND RETAINING WALLS ALSO IN A DOUBLE BASEMENT OF 15 STOREYED BLDG..

-WHAT PRECUTIONS SHOULD BE TAKEN IF EXP JOINT IS NOT PROVIDED IN 70 MTR LONG BLOCK OF A BLDG . DOES WIDTH OF BLDG PLAY ANY PART IN DECIDING THE LOCATION OF EXP JOINT

- SEPRATION GAP AS PER IS-1893 -2002 SHOULD BE R TIMES THE MAX DEFLECTION (R/2+R/2) FOR TWO BLOCKS . SOMETIMES IT COMES OUT TO BE 300 MM , IS IT PRACTICABLE TO PROVIDE/TREAT THIS MUCH WIDTH OF JOINT?

THANKS

PADAM KUMAR

DELHI



padam kumar

Yahoo! India Matrimony: Find your life partneronline.

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