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news item regarding bridge collapse in 2012
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dgbhagwat
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PostPosted: Thu Sep 10, 2015 10:28 am    Post subject: news item regarding bridge collapse in 2012 Reply with quote

Suggest all to refer also CDM 2015 - Construction (Design and Management) Regulations 2015 - a British publication, for clarity on many issues.

The Construction (Design and Management) Regulations 2015 (CDM 2015) came into force on 6 April 2015, replacing CDM 2007. It provides information about the legal requirements and is available to help anyone with duties under the Regulations. It describes
the law that applies to the whole construction process on all construction projects, from concept to completion and
what each duty holder must or should do to comply with the law to ensure projects are carried out in a way that secures health and safety.


From: abhy_vivek (forum@sefindia.org)
Sent: ‎10/‎09/‎2015 12:43
To: general@sefindia.org (general@sefindia.org)
Subject: [SEFI] Re: news item regarding bridge collapse in 2012


                         LET'S EDUCATE OURSELVES WITH CONSTRUCTION LAWS and PROCEDURES


DESIGN ADEQUACY :- The Designer of the said bridge should submit a proof of previous experience in bridge design, planning and a valid licence to undertake the said work. (. . .which all of us believe, that must be available).


MATERAIL ADEQUACY :- The Client and contractor should open out the material test results (concrete, steel, PT cables, soil etc) and conformity of the same with valid acceptance criteria.


CONSTRUCTION ADEQUACY :- The contractor should open out the 'erection method statements' followed in this bridge, inclusive of the 'Planned Equipment' vs. 'Actual equipment' available equipment at site, their maintenance records, certificates of crane operators. Whether the 'Planned Method' of bridge erection was Screened and vetted by the 'Competent' engineer inclusive of designer.


SUPERVISION ADEQUACY :-

a) Adequacy of Design Proof Checking :- The competency, past experience, valid licence by the proof checking agency. List of comments given by the Design proof checker to main designer. 'Comment Closure Report' by the main designer on the comments given by Proof checker.


b) Adequacy of PMC / construction execution agency :- The various site records demanded by the PMC, time to time, comments by PMC, and adherence of all the records, procedures with the 'Contract Document'.


CONTRACTUAL ADEQUACY :-


The contract conditions for design, approval, revisions. PMC and construction etc.
The Contract conditions stating 'Consultant's Liabilities' and Responsibilities, including 'clause on Exclusions'.
Clause on 'Design Insurance'.


When all this documents are studied in 'Syncro' (like a jig-saw puzzle) then will bring out all the Facts !!


On behalf of the originals designers, (if they are members of any established body) these records may be asked before the court. Event under RTI the same will have to be provided by court on Top priority !! (. . . N.B. :- now a days we see common men misusing the RTI for trivial things like, earnings of film stars etc.. !!)


Anyway, this once again points out that 'Just Having Excellence' in FEM, Dynamics, Neural-Networks etc. is not sufficient, we must have a sound knowledge of 'Construction Laws' and legislature in general. . . Young engineers keep running behind modern technology but 'forget' to save personal good interest against evil powers in the society and industry !!


What to say more, the instance itself was 'EYE Opener' to Indian Design and Supervision practices !!

      kasahakari wrote:                It is sad that IIT professors are arrested.

Apparently the bridge collapsed during construction, which means it is not the fault of
the Contractor. The neither the professor who proof checked the design is no way responsible nor the person who designed the bridge is responsible.

they left India" which is unfortunately true till today.

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rameshkrishnamoorthy
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PostPosted: Thu Sep 10, 2015 10:44 am    Post subject: news item regarding bridge collapse in 2012 Reply with quote

Viveks mail is very rational and has to be implemented. It should start as a curriculum in the college . As rightly pointed out present day engineers should be encouraged to spend valuable time at construction sites. Above its highly necessary no political intervention is allowed during pre & post tender stage.......

ramesh.


On Thu, Sep 10, 2015 at 10:03 AM, abhy_vivek <forum@sefindia.org (forum@sefindia.org)> wrote:
Quote:
                               LET'S EDUCATE OURSELVES WITH CONSTRUCTION LAWS and PROCEDURES


DESIGN ADEQUACY :- The Designer of the said bridge should submit a proof of previous experience in bridge design, planning and a valid licence to undertake the said work. (. . .which all of us believe, that must be available).


MATERAIL ADEQUACY :- The Client and contractor should open out the material test results (concrete, steel, PT cables, soil etc) and conformity of the same with valid acceptance criteria.


CONSTRUCTION ADEQUACY :- The contractor should open out the 'erection method statements' followed in this bridge, inclusive of the 'Planned Equipment' vs. 'Actual equipment' available equipment at site, their maintenance records, certificates of crane operators. Whether the 'Planned Method' of bridge erection was Screened and vetted by the 'Competent' engineer inclusive of designer.


SUPERVISION ADEQUACY :-

a) Adequacy of Design Proof Checking :- The competency, past experience, valid licence by the proof checking agency. List of comments given by the Design proof checker to main designer. 'Comment Closure Report' by the main designer on the comments given by Proof checker.


b) Adequacy of PMC / construction execution agency :- The various site records demanded by the PMC, time to time, comments by PMC, and adherence of all the records, procedures with the 'Contract Document'.


CONTRACTUAL ADEQUACY :-


The contract conditions for design, approval, revisions. PMC and construction etc.
The Contract conditions stating 'Consultant's Liabilities' and Responsibilities, including 'clause on Exclusions'.
Clause on 'Design Insurance'.


When all this documents are studied in 'Syncro' (like a jig-saw puzzle) then will bring out all the Facts !!


On behalf of the originals designers, (if they are members of any established body) these records may be asked before the court. Event under RTI the same will have to be provided by court on Top priority !! (. . . N.B. :- now a days we see common men misusing the RTI for trivial things like, earnings of film stars etc.. !!)


Anyway, this once again points out that 'Just Having Excellence' in FEM, Dynamics, Neural-Networks etc. is not sufficient, we must have a sound knowledge of 'Construction Laws' and legislature in general. . . Young engineers keep running behind modern technology but 'forget' to save personal good interest against evil powers in the society and industry !!


What to say more, the instance itself was 'EYE Opener' to Indian Design and Supervision practices !!

      kasahakari wrote:                It is sad that IIT professors are arrested.

Apparently the bridge collapsed during construction, which means it is not the fault of
the Contractor. The neither the professor who proof checked the design is no way responsible nor the person who designed the bridge is responsible.

they left India" which is unfortunately true till today.     
     



     


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N. Prabhakar
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PostPosted: Thu Sep 10, 2015 12:53 pm    Post subject: Reply with quote

Dear Mr. Vivek Abhyankar,

It is nice of you to list out different adequacy requirement for the successful completion of any bridge project.

I find from the past construction failures of bridges, flyovers and the like, failures are generally due to the case of lack of  'Construction Adequacy' which you have described in the list, and in not providing suitable temporary works for supporting the superstructure of the bridge.

With best wishes,

N. Prabhakar
Chartered Structural Engineer
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abhy_vivek
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PostPosted: Sat Sep 12, 2015 8:52 pm    Post subject: Reply with quote

   100% agree with you sir. From the history of bridge failures it can be seen that 70% of total failures, collapse during construction or immediately after. Out of these. . . 50% fail due to faulty / inadequate 'Formwork' and remaining 20% due to substandard material.


   Many bridge designers / formwork designers even do not know that in case of in-situ bridges the application of PT increases the load on staging towers / cribs / liners (closer to supports). During my visit to Bauma (Munich-2009) I was surprised to know that a couple of Engineers from Greece and France were not aware about this phenomenon, and when we explained them they were amazed, and asked, "Indian Structural Engineers work in so much detail?". . . I felt completely satisfied to hear this sentence about Indian SEs in general and felt happy that I could represent my nation properly !


Reg
Vivek


N. Prabhakar wrote:
Dear Mr. Vivek Abhyankar,

It is nice of you to list out different adequacy requirement for the successful completion of any bridge project.

I find from the past construction failures of bridges, flyovers and the like, failures are generally due to the case of lack of  'Construction Adequacy' which you have described in the list, and in not providing suitable temporary works for supporting the superstructure of the bridge.

With best wishes,

N. Prabhakar
Chartered Structural Engineer
Vasai (E)
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aknargotra
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PostPosted: Sun Sep 13, 2015 5:00 pm    Post subject: news item regarding bridge collapse in 2012 Reply with quote

Although it is sad that the Prof got arrested but I also feel that academicians taking up consultancy is a risky game. I have come across instances during my professional life that Professors have offloaded these projects to their students who are still greenhorns and Professors do not have time or inclination to carry out checks on correctness and detailing. Structural design is a very serious business and a full time activity. Any lapse at any stage during design process may lead to disaster. While purely design organizations or design departments within construction organizations have well laid out systems for design process and checking, I am afraid this is not the case with academic organizations since for them design consultancy is an additional and secondary assignment.

On Thu, Sep 10, 2015 at 10:03 AM, abhy_vivek <forum@sefindia.org (forum@sefindia.org)> wrote:
Quote:
                               LET'S EDUCATE OURSELVES WITH CONSTRUCTION LAWS and PROCEDURES


DESIGN ADEQUACY :- The Designer of the said bridge should submit a proof of previous experience in bridge design, planning and a valid licence to undertake the said work. (. . .which all of us believe, that must be available).


MATERAIL ADEQUACY :- The Client and contractor should open out the material test results (concrete, steel, PT cables, soil etc) and conformity of the same with valid acceptance criteria.


CONSTRUCTION ADEQUACY :- The contractor should open out the 'erection method statements' followed in this bridge, inclusive of the 'Planned Equipment' vs. 'Actual equipment' available equipment at site, their maintenance records, certificates of crane operators. Whether the 'Planned Method' of bridge erection was Screened and vetted by the 'Competent' engineer inclusive of designer.


SUPERVISION ADEQUACY :-

a) Adequacy of Design Proof Checking :- The competency, past experience, valid licence by the proof checking agency. List of comments given by the Design proof checker to main designer. 'Comment Closure Report' by the main designer on the comments given by Proof checker.


b) Adequacy of PMC / construction execution agency :- The various site records demanded by the PMC, time to time, comments by PMC, and adherence of all the records, procedures with the 'Contract Document'.


CONTRACTUAL ADEQUACY :-


The contract conditions for design, approval, revisions. PMC and construction etc.
The Contract conditions stating 'Consultant's Liabilities' and Responsibilities, including 'clause on Exclusions'.
Clause on 'Design Insurance'.


When all this documents are studied in 'Syncro' (like a jig-saw puzzle) then will bring out all the Facts !!


On behalf of the originals designers, (if they are members of any established body) these records may be asked before the court. Event under RTI the same will have to be provided by court on Top priority !! (. . . N.B. :- now a days we see common men misusing the RTI for trivial things like, earnings of film stars etc.. !!)


Anyway, this once again points out that 'Just Having Excellence' in FEM, Dynamics, Neural-Networks etc. is not sufficient, we must have a sound knowledge of 'Construction Laws' and legislature in general. . . Young engineers keep running behind modern technology but 'forget' to save personal good interest against evil powers in the society and industry !!


What to say more, the instance itself was 'EYE Opener' to Indian Design and Supervision practices !!

      kasahakari wrote:                It is sad that IIT professors are arrested.

Apparently the bridge collapsed during construction, which means it is not the fault of
the Contractor. The neither the professor who proof checked the design is no way responsible nor the person who designed the bridge is responsible.

they left India" which is unfortunately true till today.     
     



     


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aknargotra
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PostPosted: Mon Sep 14, 2015 4:12 am    Post subject: Reply with quote

Dear all,
Although it is sad that the Prof got arrested but I also feel that academicians taking up consultancy is a risky game. I have come across instances during my professional life that Professors have offloaded these projects to their students who are still greenhorns and Professors do not have time or inclination to carry out checks on correctness and detailing. Structural design is a very serious business and a full time activity. Any lapse at any stage during design process may lead to disaster. While purely design organizations or design departments within construction organizations have well laid out systems for design process and checking, I am afraid this is not the case with academic organizations since for them design consultancy is an additional and secondary assignment.
Ajay Kumar
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SATYAPAUL
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PostPosted: Sat Sep 19, 2015 4:18 am    Post subject: news item regarding bridge collapse in 2012 Reply with quote

please put up one item in the tender documents i.e. bill of quantities, the construction agency shall quote price for rechecking of design,verification of drawings.thus the contractor becomes legally responsible.onus is transferred to him.in case of failure he is responsible.contractor must engage experienced engineer.CV of engineer shall be approved by competent authority. regards satya paul  On Tue, 08 Sep 2015 20:00:12 +0530 "K B NEELAKANTAN"  wrote >                   It is shocking to learn about the arrest of Prof Vipul Prakash .Usually committees are constituted to investigate the causes of failure of any major structure. Only after final conclusion extreme steps are taken. The structural design and proof checking records should be available in the records and the presence of Structural Designer / Proof Checker is not a must during checking the details as the records would speak themselves. In the present case it appears that the the reason for arrest is for not responding to the summons. Hope he would have got bail by this time. Let us all unite in resisting such raw deals to the structural designers. >  > On Tue, Sep 8, 2015 at 1:16 PM, alpa_sheth wrote: >       --auto removed--

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