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7/27/2019 Vado Dara Building Collapse
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SURVEY OF COLLAPSED BUILDINGS IN VADODARA 2013
SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 1
SURVEY OF BUILDINGS OF MADHAV NAGAR
SOCIETY WHERE TWO BUILDINGS
COLLAPSEDATALADARA, VADODARA
BY THE STUDENTS OF ME ( STRUCTURES),
FACULTY OF TECHNOLOGY & ENGINEERING,M S University of Baroda, Vadodara
EDITED BY
Dr. B. A. SHAH,
Associate Professor
The M. S. University of Baroda
29 August 2013
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SURVEY OF COLLAPSED BUILDINGS IN VADODARA 2013
SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 2
GROUP-1
SHAH AMI ME-III
KALE ANJALI ME-III
PANCHAL NISHITH ME-III
GARGI SINVHAL ME-I
DRASHTI DAVE ME-I
JAINESH BHAVSAR ME-I
FINASALI NAVSARIVALA ME-I
ANUBHAV BANSAL ME-I
GROUP-2
GAMIT NIRAV ME-III
JINYAWALA MOHAMMAD ME-III
SAGAR RAJESH ME-III
PARTIWALA DHRUV ME-I
RANTAL AMEY ME-I
CHAUDHARI ASHISH ME-I
BHAGAT BHAVIN ME-I
ALITHA TASLIM ME-I
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 3
First Inspection Report
1.Date and Time of Incident
28/08/2013, 4:30 a.m.
2.Date and Time of Inspection
29/08/2013, 12:30 p.m.
3.Any warnings of collapse prior to incident (Cracks, deformations etc. full description of the same)
People felt the vibrations at upper floors.
Material had started crumbling.
Cracks were observed at number of places
4.Collapse trigger- Was there any specific trigger for collapse? E.g.
earthquake, sudden change in soil pore water pressure, sudden change in
loading of the structure, removal of any structural member such as
masnory wall of any floor etc.?
Collapse trigger may be due to sudden change in soil pore water
pressure.
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 4
Figure 1-Bulging of masonary walls nearby collapsed building
People of Madhavnagar were complaining about distress shown by
crumbling plaster and cracks which had appeared in the masonary
walls for more than 3 months. One such representation was made to
the news reporters of local TV channel on the previous eve of the
event.
There was continuous heavy rains for more than a month before the
incidence and water logging in the building area was observed due to
the level of surrounding roads being 600 mm above the plinth level
of the buildings. Deterioration of masonry walls over a period of
time and poor quality of construction may have added to the process
of structural collapse.
5. Is it possible to see where (in which location of the building) the collapsestarted?
It is not possible to see from, where the collapse of the structure
started but as per residences the central load bearing wall collapsed.
6. If yes, where?
----
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 5
7. Is there a collapse mechanism that is possible to identify? If yes, pl
elaborate.
The foundation was affected by the leakage problems of the under-
ground water tank and accumulation of rain water because of the
level difference in road level and floor level was observed. So, one of
the masonry walls failed at ground level and thus the whole building
collapsed.
Figure 2-Crack observed in base slab of under-ground water tank
nearby collapsed building
8.What kind of a structural system does the building have?
a. RC Ductile Moment frames
b.RC Non-ductile moment frames
c. RC Shear walls + RC ductile moment
frames
d.RC shear walls + non-ductile moment
frames
e.No well defined frames
f. Loadbearing masonry structure withlintel, plinth and roof bands
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 6
g.Loadbearing masonry structure without
bands
h.Other (pl elaborate)
Load bearing masonry structure with plinth bands, withoutcontinuous lintel bands and no roof band.
Figure 3 Condition of lintel beam in one of the surviving buildings
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 7
Figure 4 One more lintel in a nearby building
9. Is there adequate framing of the structure- (Are there adequate beam-
masonary wall frames in each direction?) Draw a plan of the building.
What is the quality of concrete?
a. in masonry walls
b. in beams
c. in slabs
d. in beam-masonry wall junctions
(Are there any voids in concrete, hollows regions, is the concrete
totally crumbled, is the cement-FA-CA ratio problematic on visual
inspection etc.)
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 8
Figure 5 Layout plan of Madhavnagar buildings, Vadodara
There were about 36 nos. G+3 blocks out of which two blocks marked in
yellow collapsed
Figure 6 Elevation and Plan of a typical block
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 9
Figure 7 Typical Plans
Poor quality of concrete and mortar was observed. The mortar was easily
getting removed from the masonary joints simply by scratching. Fig. 8
shows a typical chunk of concrete and crumbled masonary.
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 10
Figure 8 Poor quality of material
10. What is the quality of the steel (is there corrosion)a. in masonary walls
b. in beams
c. in slabs
d. in beam- masonary wall junctions
Yes, the reinforcing steel was corroded in most of the blocks
as seen in the following photographs.
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 11
Figure 9 Corrosion of steel due to lack of proper cover
11. Is there adequate steel (at least min required as per code)
a. in masonary walls
b. in beams
c. in slabs
d. in beam-masonary wall junctions
(Pl elaborate with spacing and dia of masonary wall and beam rings,
spacing and dia of beam stirrups, dia and no. of main bars in masonary
walls and beams, steel in beam-masonary wall junctions, development of
bars in junctions)
Cannot comment as dia and spacing of reinforcement was
not observed.
12.At which level was maximum damage?
At ground level where the masonary walls showed distress
and third floor slab level where the spalling of ceiling plasterwas observed due to seepage of rain water.
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 12
Figure 10 Ground floor masonry walls showing damage
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 13
Figure 11 Ground floor masonry showing poor maintenance
Figure 12 Condition of existing ground floor masonry walls
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 14
Figure 13- Swelling of floor slab
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 15
Figure 14- Hogging effect of the beam at ground level
Figure 15- Leakage of water from terrace slab
Figure 16 Cracks observed in walls at 3rd
floor along with
water leakage which has not been attended to.
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 16
Figure 17- Cracks observed in the beams supporting over head water tank
at terrace floor level
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 17
13.Was there a structural engineer on the project? If yes, who?
No information is available.
14.Was there a third party check of the design?
No information is available.
15.Was the design vetted by VUDA?
No information is available.
16.Was there a construction supervision agency? If so, who?
No information is available.
17.What were the procedures for monitoring construction quality and
conformance to design?
No information is available.
18.Is there any obvious foundation failure? If yes, pl elaborate.
no details are available regarding foundation.
19.Pl elaborate on any other details that are observed and inferred during
the field study
Bulging of the masnory walls,
Twisting of beams,
Under-ground water tank leakage,
Sagging and hogging of beams,
Structural cracks in members,
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SURVEY OF BUILDINGS COLLAPSED IN VADODARADr. B. A. Shah M.S. University www.sefindia.org Page 18
Poor quality of materials,
Inadequate cover to the concrete members.
20.Pl add as many photographs as possible of failures at global andlocal levels of structure
Remains of the collapsed buildings
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