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Baltimore Bridge Collapse
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vikram.jeet
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PostPosted: Thu Mar 28, 2024 12:14 pm    Post subject: Reply with quote

Balti more river Bridge collapse :-

One more protective aspect is that the Navigation span must be totally independent, as also noted by Admin Madam Alpa .
Such Navigation span must be simply supported on independent piers,  that is to say that Twin piers on either side of Ng span,, one pier each end exclusively for Ng deck whereas other pier ( of twin) shall support Non Ng span.
Even Ng span to be separated from other spans by smaller spans on either side of it to avoid, even twin piers hitting.

Along with this,  some protective but cost effective channelisation be thought of on u/s  .
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alpa_sheth
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PostPosted: Fri Mar 29, 2024 9:13 am    Post subject: Baltimore Bridge Collapse Reply with quote

Dear Alok,

I'm glad IABSE had a technical discussion on the Baltimore bridge. There will be scores of reports from across the world which we will get to see on this collapse in the months to come and IABSE should also do its own report.

I would also request IABSE to discuss the very pressing concern of Indian citizens on very frequent collapse of bridges in India. Collapses are happening most often during construction, but also after a bridge is commissioned. This is a very serious issue and drags the country down on the development front.

1) On March 22 2024, an under-construction bridge collapsed in Bihar's Supaul, killing one person and injuring several others.
2) On June 4 2023, a suspension bridge collapses for a second time in Bhagalpur district of Bihar.
3) A bridge collapse occurred in Nalanda district in November 2022, causing in the death of a labourer.
4) Other under-construction bridges in Kishanganj and Saharsa districts of Bihar collapsed even prior to being officially inaugurated.
5) In Bihar, over the past three years, over 13 bridges have collapsed with 7 collapsing in 2023 alone.  
6) On June 14, 2023, an Under Construction Bridge collapsed in Tapi on the River Mindhola in Gujarat
7) More than 50 children are among 135 people killed on Oct 30 2022 in the pedestrian bridge collapse in Morbi, Gujarat  
8)On 23 August 2023, an under-construction railway bridge collapsed in northeastern Mizoram state of India. At least 26 labourers working on the site were killed in the accident
9) On Aug 2023, the Baddi bridge collapsed after heavy rain in Himachal Pradesh

I could go on and on. But you get the drift. There is a credibility crisis re. the Bridge construction industry and people's fears need to be assuaged.

While we will get multiple reports on the Francis Scott Key bridge no one will else give us a candid report on the State of Bridges and Bridge Construction in India.

best regards,
Alpa

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bsec
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PostPosted: Fri Mar 29, 2024 10:30 am    Post subject: Baltimore Bridge Collapse Reply with quote

Dear Alpa


I can not agree more with you. There is a definite increase in the frequency of structural failures in India. Bridges are more in the news due to their size, scale, visibility and its social and environmental impact. There is a National Group of IABSE of which DG, MoRT&H is the Chairman. I think the national group of IABSE is the right association to form a core group to get into the root cause analysis of failures of infrastructure in India.
Besides IABSE, I think IAStructE is doing a marvellous job of creating a platform by the name CROSFALL thru' which structural designers, contractors and clients can report about failures and near misses confidentially. I think this is a great opportunity which is not used by the structural engineering fraternity. As Editor of this journal I am struggling to get reports, despite the fact that we have so many failures and near misses.
Through this email, I am appealing all readers to contribute in CROSFALL without fear.
Best Wishes
Alok Bhowmick

FNAE, International PE (India)
Delegation Head (India), ING-fib
Managing Director


B&S Engineering Consultants Pvt. Ltd.
315-316, Vishal Chambers, Sector 18, Noida; U.P - 201301
Tel: +91-120-4570703; 4310433; Mobile : +91-9811175255
Website : www.bsecpl.in

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On Fri, Mar 29, 2024 at 2:43 PM alpa_sheth <forum@sefindia.org (forum@sefindia.org)> wrote:

Quote:
            Dear Alok,

I'm glad IABSE had a technical discussion on the Baltimore bridge. There will be scores of reports from across the world which we will get to see on this collapse in the months to come and IABSE should also do its own report.

I would also request IABSE to discuss the very pressing concern of Indian citizens on very frequent collapse of bridges in India. Collapses are happening most often during construction, but also after a bridge is commissioned. This is a very serious issue and drags the country down on the development front.

1) On March 22 2024, an under-construction bridge collapsed in Bihar's Supaul, killing one person and injuring several others.
2) On June 4 2023, a suspension bridge collapses for a second time in Bhagalpur district of Bihar.
3) A bridge collapse occurred in Nalanda district in November 2022, causing in the death of a labourer.
4) Other under-construction bridges in Kishanganj and Saharsa districts of Bihar collapsed even prior to being officially inaugurated.
5) In Bihar, over the past three years, over 13 bridges have collapsed with 7 collapsing in 2023 alone.
6) On June 14, 2023, an Under Construction Bridge collapsed in Tapi on the River Mindhola in Gujarat
7) More than 50 children are among 135 people killed on Oct 30 2022 in the pedestrian bridge collapse in Morbi, Gujarat
8)On 23 August 2023, an under-construction railway bridge collapsed in northeastern Mizoram state of India. At least 26 labourers working on the site were killed in the accident
9) On Aug 2023, the Baddi bridge collapsed after heavy rain in Himachal Pradesh

I could go on and on. But you get the drift. There is a credibility crisis re. the Bridge construction industry and people's fears need to be assuaged.

While we will get multiple reports on the Francis Scott Key bridge no one will else give us a candid report on the State of Bridges and Bridge Construction in India.

best regards,
Alpa
     



     




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MGStructE
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PostPosted: Sat Mar 30, 2024 6:12 am    Post subject: Indian Waterways Reply with quote

abhio wrote:
The Baltimore bridge was built in 1973. I have not been able to find out what the ship impact design load was at that time. IRC 6 2017 Table 21 gives barge DWT up to 4000 tonnes, while the ship which struck the bridge was 116,851 tonnes in DWT.

Good point there. I am starting to wonder if our bridges across rivers where government is promoting waterways (and in future)  are designed to barge impacts or not. Has anyone done that RA .

Thanks
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astomar
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PostPosted: Sun Mar 31, 2024 8:00 pm    Post subject: Baltimore Bridge Collapse Reply with quote

Dear fellow Engineers,  

Thanks for initiating such a valuable discussion on Baltimore bridge collapse and recent bridges failures in India which are thought provoking and inspiring to all young engineers towards safe and sustainable bridge design practices.

I believe, most of failures related to Bridges in India (such as several bridges in Bihar , Morbi bridge in Gujarat , Kolkata flyover and many others in various part of India ) have occured during its initial/ construction phases. These are primarily because either contractor is under heavy political or economic pressure to finish the job in haste. This resulted in excessive pressure on site workers and engineers, bypassing the safety rules , lack of measures for risk management , lack of quality control , executing works with no proper planning or proof checking, not carrying out construction stages properly in design, not able to spot the distress in structures on time prior failure , faulty design or no design of temporary works and not proper accountability of culprit.

All findings of failure should come out in detailed review report which should be made public so that engineering community can learn from other mistakes and avoid such failures in future projects.

Indian government should also work on stringent CDM regulations and its implementation in construction Industries after consulting with all stake holders of civil engineering and construction community to promote the safe and ethical civil engineering practices like the other developed countries have.

Hope, we all make this happen to step closer towards safe and sustainable practices in bridges and civil structures in India.

Best Regards.

Er. Alok Singh Tomar

Lead Engineer- Bridges & Civil Infrastructure  
M.Tech- Structures, M.I.E.I.
Founder and contributor scaleupmyskill [dot] com

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hemraj chanchal
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Joined: 09 Jul 2018
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PostPosted: Mon Apr 01, 2024 7:30 am    Post subject: Baltimore Bridge Collapse Reply with quote

HelloEveryone
Thanks all for sharing the discussions.
Thanks
Hemraj Chanchal
MTech in structure, BSc in Physics
HC Constructions & Consulting Engineers



On Mon, 1 Apr 2024 at 05:39, astomar <forum@sefindia.org (forum@sefindia.org)> wrote:

Quote:
           Dear fellow Engineers,

Thanks for initiating such a valuable discussion on Baltimore bridge collapse and recent bridges failures in India which are thought provoking and inspiring to all young engineers towards safe and sustainable bridge design practices.

I believe, most of failures related to Bridges in India (such as several bridges in Bihar , Morbi bridge in Gujarat , Kolkata flyover and many others in various part of India ) have occured during its initial/ construction phases. These are primarily because either contractor is under heavy political or economic pressure to finish the job in haste. This resulted in excessive pressure on site workers and engineers, bypassing the safety rules , lack of measures for risk management , lack of quality control , executing works with no proper planning or proof checking, not carrying out construction stages properly in design, not able to spot the distress in structures on time prior failure , faulty design or no design of temporary works and not proper accountability of culprit.

All findings of failure should come out in detailed review report which should be made public so that engineering community can learn from other mistakes and avoid such failures in future projects.

Indian government should also work on stringent CDM regulations and its implementation in construction Industries after consulting with all stake holders of civil engineering and construction community to promote the safe and ethical civil engineering practices like the other developed countries have.

Hope, we all make this happen to step closer towards safe and sustainable practices in bridges and civil structures in India.

Best Regards.

Er. Alok Singh Tomar

Lead Engineer- Bridges & Civil Infrastructure
M.Tech- Structures, M.I.E.I.
Founder and contributor scaleupmyskill [dot] com
     



     




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SATISH MADHAVRAO KULKARNI
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Joined: 10 Feb 2010
Posts: 18

PostPosted: Tue Apr 02, 2024 6:30 am    Post subject: Baltimore Bridge Collapse Reply with quote

With due respect to all concerned I have following observations:-1. Baltimore Bridge Collapse is Accediantal one, and cause for the ongoing discussion,
2. The designs based on existing construction codes and practices approved by relevent authorities can be checked/verified / reverified and or rechecked -may not find faulty, as these are documentary evidences
3.However, the execution part is always in doubt and many times proved true
4. The reasons
a) untrained/inadequatly trained skilled and/or unskilled labour force,
b) inadequate facilities for on job/sight inputs,
c) little time for senior executivies to go on site and inspect/review site conditions and give inputs to site engineers,
d) importance is given to maintain records and records to avoid responsibility,
e) the significance of on site quality control is, sometimes, over looked. Most of the failures are because of such shortfalls.
-- Dr. S. M. Kulkarni


On Mon, 1 Apr, 2024, 01:41 astomar, <forum@sefindia.org (forum@sefindia.org)> wrote:

Quote:
           Dear fellow Engineers,

Thanks for initiating such a valuable discussion on Baltimore bridge collapse and recent bridges failures in India which are thought provoking and inspiring to all young engineers towards safe and sustainable bridge design practices.

I believe, most of failures related to Bridges in India (such as several bridges in Bihar , Morbi bridge in Gujarat , Kolkata flyover and many others in various part of India ) have occured during its initial/ construction phases. These are primarily because either contractor is under heavy political or economic pressure to finish the job in haste. This resulted in excessive pressure on site workers and engineers, bypassing the safety rules , lack of measures for risk management , lack of quality control , executing works with no proper planning or proof checking, not carrying out construction stages properly in design, not able to spot the distress in structures on time prior failure , faulty design or no design of temporary works and not proper accountability of culprit.

All findings of failure should come out in detailed review report which should be made public so that engineering community can learn from other mistakes and avoid such failures in future projects.

Indian government should also work on stringent CDM regulations and its implementation in construction Industries after consulting with all stake holders of civil engineering and construction community to promote the safe and ethical civil engineering practices like the other developed countries have.

Hope, we all make this happen to step closer towards safe and sustainable practices in bridges and civil structures in India.

Best Regards.

Er. Alok Singh Tomar

Lead Engineer- Bridges & Civil Infrastructure
M.Tech- Structures, M.I.E.I.
Founder and contributor scaleupmyskill [dot] com
     



     



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Sanjay_Puranik
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PostPosted: Thu Apr 04, 2024 12:30 pm    Post subject: Baltimore Bridge Collapse Reply with quote

The piers were concete


<![endif]--><![if !vml]><![endif]>  





























From: PUB:sudhirbadami <forum@sefindia.org>
Sent: Tuesday, March 26, 2024 11:11 PM
To: general@sefindia.org
Subject: [SEFI] Re: Baltimore Bridge Collapse



Attention: This email was sent from someone outside the Company. Do not click links or open attachments unless you recognize the sender and know the content is safe.    

I am in agreement with Alpa Sheth. If the piers were made of Concrete, the caison like piers would have borne the impact load from the ship colliding and no local failure of "lattices" would have occurred leading to collapse. The deflection of the latticed pier must also been too much hence the collapse.

On Tue, 26 Mar, 2024, 10:04 PM bsec, forum@sefindia.org)> wrote:

Quote:
Dear AlpaThanks for your post.
The spectacular failure video of Baltimore Bridge due to ship collision is a treasure for bridge engineers, though extremely unfortunate. We have seen such a spectacular collapse video in one of the Indian bridges (under construction) last year. I am sure this collapses will lead to National Transport Safety Board (NTSB) coming forward to constitute an expert committee to go into the root cause and the outcome will lead to changes in regulation in operation of water transport as well as changes in AASHTO codes and standards.
I wish in India we could have an independent body like NTSB to address the failures in India. They are more frequent than in the USA and our forensic investigations are cosmetic, to say the least.
By the way your observation about lightness of superstructure as reason for failure is not appropriate in my view. The problem in all probability is with the (lack of) protection of substructure for ship collision, and oversight from the authority in regulation of ship movement, which has possibly led to this disaster.
I look forward to getting more details on this failure
Best Wishes
Alok Bhowmick

FNAE, International PE (India)

Delegation Head (India), ING-fib


https://ci3.googleusercontent.com/mail-sig/AIorK4wkNzOGZPd7_QE7oqsbRta3zM_dCxeIm_01TZ_jtrxFlwUCY21f6Srn6WXPfNBtdIxJTfQndXg">


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B&S Engineering Consultants Pvt. Ltd.
315-316, Vishal Chambers, Sector 18, Noida; U.P - 201301
Tel: +91-120-4570703; 4310433; Mobile : +91-9811175255


Winner of Ãâ‚Å“IEI Industry Excellence Award 2022Ãâ‚

CEAI National Award winner for Ãâ‚Å“Excellence in Engineering Consultancy ServicesÃâ‚ for 2017, 2018 & 2023









On Tue, Mar 26, 2024 at 6:07Ãâ‚PM alpa_sheth  forum@sefindia.org (forum@sefindia.org) (forum@sefindia.org (forum@sefindia.org)))> wrote:

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