STRUCTURAL ENGINEERING FORUM OF INDIA [SEFI]

padamkr1 · SEFI Member Joined: 26 Jan 2003 Posts: 18

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 · Posted: Tue Dec 07, 2004 4:46 pmPost subject: expansion joint and sepration gap

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.

Posted via Email