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Steel industry is facing one of the toughest challenges in the recent period. In the post meltdown phase by end 2009, it was generally believed that the worst that took everyone by surprise is over and with stimulus packages by the worried governments pulling up the growth momentum, steel industry would return on rails. Rising prices of the finished products at the beginning of the year reiterated the confidence. However the euphoria proved short lived. First it was the shooting up of prices of raw materials, Iron Ore and Coking Coal followed by slackening of demand and the consequent fall in finished prices. While the downgrading of USA by Standard & Poor signaled a deep rooted recession with loss of income, wealth and increasing unemployment, the latest report by IMF confirmed the enormity of the problem of sovereign debt crisis in Euro zone. Indian steel market projected to grow by around 10% in 2011-12 would be hard pressed to expand by more than 6%. Even if it happens this way, Indian steel market would continue to be among the very few fast growing markets.
Amidst the high risks of falling demand from construction and other processing industries, the capacity augmentation efforts through brown field expansion has led to an anticipated surplus scenario by end of 2012. The earthquake and landslide disaster has further added to the woes of North and hilly areas of West Bengal and north east regions. The silver lining is the opportunities provided to the steel frame structure in building and other industrial structures that can withstand the tremors and landslides. This is not the first time that such a realization has emerged about the utility and effectiveness of steel framed structure in building. But the memories of disasters are always short lived. May be, not adequate efforts were put forward in a systemic and structured manner either by the industry or by the policy planners. Apart from the severity of the natural disasters which highlighted the strength and ductility of the steel structures, the wide use of non-standard cheap variety of constructional steel demonstrated the supreme ignorance of the common house owners about the advantage of good quality steel and the laxity on the part of the government in enforcing the certification of standard grade steel.
It is heartening to note that Ministry of Steel has taken up in right earnest the task of mandatory certification of a few grades of steel of common use and INSDAG has been advised to conduct an awareness campaign of use of steel conforming to BIS standards while highlighting the pitfalls of using bad quality steel. In India the construction companies and also the agencies executing the construction projects, particularly in the real estate sector, are steadfastly concerned with the initial cost estimates and the standard concrete designs. There is hardly any consideration for life cycle cost advantage and innovative structural designs. As a result there are abundant scope for compromise on safety and environmental aspects. All efforts at propagating the utility and effectiveness of steel composite structures must be continuous and targeted at the common man, the ultimate users. Construction at seismic zones, coastal belt and hilly terrains must conform to a much wider application of steel designs as per standards. There is also good deal of work left for the enforcing arms of the government which would prevent the use of cheap non-standard grades steel. Issuing notifications must be followed by rigorous enforcement of the same. Consumer awareness has the potential to make it happen and INSDAG with active support of producers, small and big, is to make utmost endeavour to achieve this.
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| Meetings |
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Meeting with STUP Consultant, Kolkata
INSDAG had a detailed meeting with Mr Amitava Ghosal, STUP Consultant on a new training module on IRC 22 : 2007 (Steel Bridges). The training module and speakers’ panel have been prepared and sent to few experts for their review. Training will be announced shortly.
Meeting on 12th Five Year Plan
INSDAG being a member of Working Group and Sub Groups on Steel Sector for 12th Five Year Plan (2012-17), constituted under Ministry of Steel, attended several meetings at New Delhi to review the sector specific issues. Based on the various findings and recommendations of all sub groups, one preliminary report has been finalised would be submitted to Planning Commission shortly.
Meeting on National Steel Promotion Campaign
Working committee meeting on National Steel Promotion Campaign with all the stake holders i.e Ministry of Steel, JPC and all major steel producers, took place on 09th May 2011 at JPC Conference Hall, Kolkata. The film script and shooting schedule have been finalised during the meeting. Shooting of the film at various locations are going on as per schedule.
Meeting on National Awareness Campaign and Steel Products Quality Control Order
INSDAG has formed two functional committees to spearhead the Awareness Campaign on behalf of Ministry of Steel, comprising of representatives from Technical Division and Corporate Communication / Marketing Division of major steel producers to provide inputs for advantages of using good quality steel. Technical Committee met on 23rd August 2011 at INSDAG office wherein it was decided to prepare a general and a technical write up to be used for the knowledgeable user segment. The campaign committee met on 09th September 2011 at INSDAG office and finalized names of four categories of agencies i.e P R Agency, Creative Agency, Media Buying Agency and Market Research Agency, for appointed for carrying out the campaign.
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Meeting with Dr Manas Bhuniya, Hon’ble Minister for Cottage and Irrigation, Govt of West Bengal
A three member INSDAG team had met Dr Manas Bhuniya, Hon’ble Minister for Cottage and Irrigation, Govt of West Bengal on 07th June 2011 to apprise him about the steel intensive infrastructural development INSDAG could offer. Dr Bhuniya assured INSDAG to help implementing some project in rural areas of West Bengal.
Meeting with Mr Gautam Deb, Hon’ble Minister for North Bengal Development, Govt of West Bengal
Another team of INSDAG had met Mr Gautam Deb, Hon’ble Minister for North Bengal Development, Govt of West Bengal on 09th June 2011 to apprise him about the steel intensive infrastructural development INSDAG could offer. Mr Deb has sought INSDAG’s in help implementing some low cost housing project in North Bengal.
Meeting with JSW Severfield Limited
Mr Anshul Singhal, Director, JSW Severfield Ltd had visited INSDAG on 15th July 2011 and had a detailed discussion on Joint marketing and development plan for Steel Intensive Commercial Buildings in Eastern India. INSDAG is coordinating with some leading Real Estate developers for commissioning of such projects.
Meeting with Jindal Steel & Power Limited (JSPL)
A technical team from JSPL had visited INSDAG on 19th August 2011 for incorporation of various clauses into the relevant BIS standards and specifications pertaining to the structural sections rolled by them. INSDAG assured all help in this regard and already taken up with BIS. Progress status of the design manuals using sections manufactured by JSPL being prepared by INSDAG was also communicated to them.
Meeting with Essar Hypermart
Mr Girish Rao, CEO, Essar Hypermart visited INSDAG on 16th September 2011 to discuss about the sponsored project on “Skill and Entrepreneurship Development Programme”. Essar Steel has agreed to sponsor one such programme in Gujarat. To select the prospective entrepreneurs one half day seminar would be organized at Surat in the first week of November 2011.
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Training for Nodal officers under Rajiv Gandhi Udyomi Mitra Yojana (RGUMY) was organized at NIESBUD, Noida by concerned department of Govt of India. INSDAG, being selected as the nodal agency under RGUMY, participated in the training programme for development of various aspects i.e organisational, financial and IT related activities of RGUMY. INSDAG will now start giving Fabrication training with hand holding support to some rural entrepreneurs under RGUMY.
- INSDAG participated as a joint sponsor in the 18th International Steel Seminar during 3 - 4 August 2011 at Oberoi Grand, Kolkata organized by Steel Scenario. Mr Sushim Banerjee, Director General, INSDAG was the Chairman of the event. Most of the major steel producers alongwith host of international experts had participated in the event. On behalf of INSDAG a technical presentation on Cost Effective Ways to Surface Protection was delivered during the technical session 3 on 3rd August ’11.
- INSDAG participated in the International Seminar on Steelmaking Technology in India on 05th September 2011 at Kolkata. The seminar was quite informative and interactive. Host of national and international experts on the steel making technology participated in the seminar.
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'One day’ internal training for ISO 9001 : 2008
One full day internal training for ISO 9001 : 2008 certification for all employees of INSDAG was organized at JPC Conference Room on 30th June 2011. Expert from M/s TUV had conducted the training. Final certification will be obtained shortly. Training for Internal Auditors for ISO 9001 : 2008 was also organised at 19th May 2011. Quality Manual will be finalised shortly.
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| Beginners Course for Professional Engineers on IS 800-2007
A Beginners Course for Professional Engineers on IS 800-2007 was organised in Kolkata on 28-29 June 2011. A total of 30 Engineers have participated in the programme. |
“Steel – The Preferred Choice of Construction Material for Infrastructure Construction”
INSDAG and FICCI jointly organized the second ‘Two days’ seminar at Kolkata during 26-27 July 2011. The topic of the seminar was “Steel – The Preferred Choice of Construction Material for Infrastructure Construction”. The second day of the seminar was attended by Sri Partha Chatterjee, Hon’ble Minister of Commerce and Industries, Govt of West Bengal. Host of other dignitaries was also present during the inaugural session including Sri Malay Chatterjee, CMD-HSCL, Sri B D Mundhra, Chairman-Simplex Infra and Sri Sandipan Chakravorty, MD-TSPDL etc. About 100 paid delegates were present in the seminar. According to the feedbacks received from FICCI, the quality and topic of the presentations were highly rated by the participants.
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Award ceremony of 11th National Competition for Structural Engineering
Final round evaluation and Award ceremony of 11th National Competition for Structural Engineering students took place at INSDAG office during 08 – 09 August 2011. This year among 16 finalists, 14 teams had participated. Prof (Dr) Ajay Ray, Vice Chancellor, BESU was of the chief guest during the Inaugural session. A team from IIT, Roorkee had bagged the First Prize. |
Effective Use of Steel in Puja Pandals
An evening awareness programme on Effective Use of Steel in Puja Pandals / Temporary Structures was organized at INSDAG office on 17th September 2011 with leading decorators, puja organizers, suppliers and fire brigade officials. Advantages of steel framed temporary structures were discussed in details. It was a very good interactive programme where various problems and its solutions were deliberated.
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| INSDAG Yearbook 2010 - 2011
Publication INSDAG’s 7th Yearbook is an effort to expose Indian construction sector with world class methodologies. The volume contains technical articles from experts all around the world. Dr Mark Lawson, SCI UK has given a firsthand tutorial on Design of Composite Beams as per Eurocodes, Dr David Wickham of International Paint on Structural Fire Protection for Buildings,The article of Dr S R Satish Kumar has covered the General Aspects of Use of Structural Steel in Construction. These papers will help the structural consultants. Technical papers of Prof Achyut Ghosh on Erection Steel Bridges and Mr Amitava Ghosal and Mr Utpal Ghosh of Stup Consultant on New Generation Codes for Steel Work Design are quite practical and would be useful for Indian Infrastructure Development. Mr Sushim Banerjee’s paper on Growth story of Steel in India is a much needed inclusion in the Yearbook to take care of analytical needs of Indian steel industry.
Prices: Rs.400/- Only
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!!! National Award, Recognition, Felicitation!!!
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National Competition for Students [(NACS-A)] for Best Innovative Use of Steel in Architecture
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The theme of the competition for the year 2010-11 has been selected as A Steel intensive Martyr Memorial. The Brochures have been sent to about 150 Architectural colleges for participation.
This year responses from the students are not very supportive. Only few entries have been submitted so far. Final round of evaluation likely to be held in November ’11. |
National Competition for Students [NACS(A)] for Best Innovative Structural Steel Design
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Final round evaluation and Award ceremony of 11th National Competition for Structural Engineering students took place at INSDAG office during 08 – 09 August 2011. This year among 16 finalists, 14 teams had participated. Prof (Dr) Ajay Ray, Vice Chancellor, BESU was the chief guest during the Inaugural session. First prize was bagged by IIT, Roorkee. Second prizes were won by two teams of IT, BHU and third prizes were won by MSIT, Kolkata and IIT, Chennai respectively. |
| National Competition for Professionals |
The competition has been announced for the 7th year I,e, 2010-2011. Structures predominantly using steel as the major material of construction completed for occupancy within the period of 2000-2010 and having project cost Rs. 3.0 Crores, including the land cost are eligible to take part. Entries already submitted in previous years but could not win awards are also eligible for reconsideration if resubmitted. Last date for receiving Notice of Intent is over on 31st August 2011. This year 13 nos NOI’s have been received. First round evaluation will be started once all the entry will be received. |
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| ABROAD |
Centrepiece Atrium at Passmore School, Harlow, Essex
Construction work of the two storey school began in January 2010. Designed by architect Jestico + Whiles, the school will eventually accommodate 1,200 students in its naturally ventilated ‘finger structures’ which radiate outwards from the central atrium. The steel framed elliptical atrium roof complimented the main concrete structure, and erection programme required the delivery of a myriad of small steel sections to form the complex shape for the centrepiece atrium. Total project cost was 23 million pound.
(Ref: NSC May 2011 Vol 19 No5) |
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Smart LIFE for low carbon economy at Cambridge
A new 2.6 million pound Resources Centre in Cambridge will help speed up growth of the low carbon economy in the east of England. Currently under construction, the steel frame for the building was erected by H Young Structures working on behalf of main contractor Kier Marriott. Known as SmartLIFE Low Carbon, the project is a joint venture between Cambridgeshire County Council and Cambridge Regional College. It forms part of a much larger scheme called The Hive, which will eventually include an enterprise part and eco-homes. SmartLIFE Low Carbon has been designed for a low impact and highly energy efficient building. Solar thermal water heating, highly efficient heat recovery systems, rainwater harvesting methodology, solar shading, photovoltaic arrays for electricity generation and automated lightings are being installed to achieve a BREEAM ‘Excellent rating”.
(Ref: NSC May 2011 Vol 19 No5) |
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Park House, Oxford Street, London
The largest development on London’s Oxford Street for 40 years is progressing on schedule with the steel frame (as of mid April) approximately 70% complete. Known as Park House, the structure will cover an entire city block, totaling almost half a hectare, on a prime West End location close to Marble Arch and Mayfair. The mixed use development will include 15,000 sq.mt of offices and luxury residential apartments and a further 8,000 sq.mt of retail space on the lower ground and first floors. The steel framed structure will consist of eight floors, topped with a double height curved glass roof. Approximately 3,300 MT of steel will be required to complete the project, which is due for completion in 2012.
(Ref: NSC May 2011 Vol 19 No5) |
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Bramall Music Building, University of Birmingham
The University of Birmingham is building a new concert hall, one of which will provide state of the art performance and rehearsal space as well as enhancing the surrounding historic buildings. The front portion of the new building, which is incorporated into the crescent and links into existing structures on either side, contains three floors and a basement. The top floor rehearsal room is also a double height space, but this floor is topped with a feature domed roof. The dome creates the open column free space for the students’ music rehearsals while also replicating the style of the original crescent. With a 15m diameter, the roof dome structure contains more than 400 individual steel members. This upper zone gives the room its double height space and eight steel columns support the domed structure. Mirroring the University’s other domes, the upper gallery has a series of eight arched windows, brought to site as precast units and inserted between the steel columns. Twenty four segments make up the entire dome, half of which were brought to site fully assembled. All of the segments are connected and tied together with a compressing rink positioned at the apex. Each segment consists of two curved radian members tied together by bracing. The fully assembled segments were erected by tying each one together via intermediate segments which were constructed on site. Approximately 410 MT of steel will be required for the 13 million pound building project, which is scheduled to be open in 2012.
(Ref: NSC May 2011 Vol 19 No5)
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| INDIA |
Largest vaulted Space Frame Structure at Jalgaon, Maharashtra
Largest vaulted Space Frame structure has been in the making in North Maharashtra University, Jalgaon for their Convocation Hall. Erected over an area of 54.8 m x 48.6 m, the structure has 2 nos massive vaults at different level and 2 nos domes at two ends. Built with MERO Joint technology, the Space Frame has elegant looking solid spheres as Nodes and Tubular sections as members. 85 MT of Tubular sections have been used for the structure while 3100 sqm of Galvalume Steel Sheets are used for Roofing and Cladding. Total project including civil and structural works will be completed in 12 months time. Project value for the total project is approximately 8.00 crores.
(Courtesy: Amiya Commerce and Construction Co Pvt Ltd)
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| Grand Palladium, Mumbai
The Grand Palladium is an iconic project in financial capital of India and stands out in the crowd of traditional RCC buildings. The building is brain child of Mumbai based Architect Kamal Malik and WSP, with Pratibha Industries carrying out the construction. The structure has an irregular plan arrangement with overall dimensions of 80 x 28 metres. The seven storey steel superstructure is supported on a reinforced concrete podium by an irregular arrangement of inclined steel box columns. Basement and stilt levels are constructed with concrete. The floors are 100mm thick reinforced concrete slabs which are designed to act compositely with 305 x 305 UC floor beams. The floor grid is 16 x 16 metres at the north end 14 x 6 metres at the south end. The floors act as diaphragms carrying horizontal forces to the reinforced concrete cores and ranking columns providing resistance to horizontal loads due to wind and earthquakes. The structure is unique and presents a number of structural challenges in terms of irregular general arrangements and long cantilevers.
(Courtesy : Tata Steel international)
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| Eicher Corporate Office, Gurgaon
World Architecture Award Winner, the corporate headquarters of Eicher is designed to be a state of the art steel building which uses the least energy and resources possible in day to day functioning. Romi Khosla Architects are Architects for this Project with Frischmann Prabhu, Pune as the Structural Designers. Geodesic Techniques were the Steel Works Contractor. The use of the ComFlor deck profile CF80 as a composite slab is a key feature of the Eicher building. In the aim for achieving high energy efficiency by eliminating the necessity for a false ceiling, the underside of the deck is exposed and the beams sprayed with intumescent paint to form a unique architectural feature. The materials supplied for the entire project consisted of 260 metric tonnes of UC356 x 406, 1,500 square metres of CF80 x1.2mm and 7,500 square metres of CF80 x 0.9mm.
(Courtesy : Tata Steel international) |
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INSDAG welcomes all the new member organisations & Professionals enrolled during April to September 2011
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Member Organization |
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1. |
ERA Building Ltdl |
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JSW Severfield Structures Ltd |
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WPS India |
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Technip KT India Ltd |
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5. |
Godrej Storage Solutions |
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6. |
Shantilal Shah Engg. College |
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7 |
Thiagarajar College of Engg. |
Institutional |
Educational Institute |
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Rajasthan Tech. University – Kota |
Institutional |
Educational Institute |
10 |
Measi Academy of Architecture |
Institutional |
Educational Institute |
11 |
13 nos. Professionals (Annual / Life) |
Individual / Individual Life |
Professional |
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INSDAG has obtained sanction of its own proposed (B+G+4) Building from the Kolkata Municipal Corporation. The Structural design done by INSDAG has been sent to Rourkela Steel Plant’s Design Division for Proof checking (through SAILCON). INSDAG has engaged
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Extract of Comments received from Various Organisations on 11th National Student Award Competition (NACS – C) for Best Innovative Structural Steel Design for
Civil / Structural Engineering Students for the year 2010-2011 held on
August 8 – 9, 2011 at Kolkata
I am also glad that such a large number of students have taken part in this competition which is very much encouraging. I wish that such type of competitions are organised on regular basis.
Dr Jamshed J Irani
“In fact, a formal thanks will not match the noble gesture the INSDAG has shown by organizing such event which eventually encourage the budding engineers to expose their talents on the one hand and share their expertise with the rest of their fellow engineers across the country.
Ranen Nag,Executive Director, SAIL Environment Management Division
“The efforts of INSDAG towards creating awareness and popularizing usage of steel amongst the people in general through the young technocrats by involving themselves to competitions like this, is indeed praiseworthy and conceptually outstanding.”
Mrinal Kanti Barman, General Manager (P&A) SAIL, CMO
“This innovative effort made by INSDAG is commendable. Kindly convey my appreciation and best wishes for your team members who have made this possible”.
Dr. Sumit Datta, Dy. General Manager & Senior Faculty Member SAIL, MTI, Ranchi
“The efforts of INSDAG to encourage and create awareness among the students community is a commendable work”.
Dr. Nagesh R Iyer, Director, CSIR – SERC, Chennai
“It gives us great pleasure to note the involvement of students from all over India. It is indeed commendable and we shall look forward to your continuing with such useful and beneficial programmes in future involving and encouraging students”.
J C Marwah, Secretary General, The Indian Institute of Metals, Kolkata
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DO YOU KNOW
INFORMATION ON REINFORCEMENT BARS USAGE
Rust is the oxide that is formed by open air oxidation of iron. Rusting is caused by the reaction of air and moisture, generally a slow process and is a very common phenomenon for most steel products and has practically no effect on the functional quality.
Corrosion on the other hand is the electrochemical reaction between a metal and its environment. The reaction causes formation of not only oxides but other compounds as well. Corrosion usually results in accelerated and uneven erosion of metal surface and may be detrimental to its intended service performance.
Oxidation of metal when exposed to atmosphere is rather a natural phenomenon and steel rebar is not an exception. Iron in common steel grades has a tendency to react with oxygen /water present in the atmosphere forming various types of oxides , brownish in colour and is termed as rust. Process of rusting may be slowed down through various protective measures but cannot be completely prevented. In fact for most metals, the oxide is the most stable natural form as observed in the respective metallic ores in the nature. Therefore any steel, with presence of oxygen, would have a tendency to go back to its natural form of oxide. Rebar is not meant for its aesthetic look but for its some critical properties to reinforce the concrete for structural safety and these are mechanical strength, ductility, bond strength etc
If we look at the above functional and essential properties of rebar, normal surface rusting as a result of atmospheric oxidation, does not any way impact the above properties. This has been tested time and again and the fact established. On the contrary, some amount of rusting makes the surface rougher and thereby enhancing the bond strength which is beneficial.
Check rebar for application is to clean the surface with a wire brush and observe whether there is any pit formation due to corrosion/over rusting which is not advisable to use. Pits look like small localized depression on the surface. Check whether the ribs on the surface have been washed out due to rusting or not. If it has not shown any rib wash out, it can be used safely. Severely rusted/pitted rebar is detrimental.
While usage of little reddish rebar has its own advantages, it is important to protect it from progressive corrosion. Corrosion is mostly dependant on the environment which the rebar is exposed to. Any acidic atmosphere in presence of salts like chloride or gasses like CO2 may promote corrosion .Corrosion can also be encouraged if water is logged in some portion of rebar for long time. A common example of such situation which may be created when a portion of rebar extends from already cast concrete members. This is generally done when there is a plan to extend the construction in future. In such cases, the minimum precaution to be taken is to cover such extended rebar with some coating like cement slurry. In absence of such protection, it may lead to accelerated rusting /corrosion and should be avoided.for rejection.
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Editorial Boards: Mr. Sushim Banerjee (Director General) Dr. Jayanta Saha (Dy. General Manager),
Mr. Shiladitya Chanda(Dy. Manager Manager (C&S))
Consulting Editors : Mr. G.K.Basak, Dr. M.Chatterjee,
Mr. Manas Mohan Ghosh , Mr. Debashis Dutta, Mr. Arijit
Guha & Mr. Goutam Chakraborty
Contact Us: ISPAT NIKETAN, 52/1A Ballygunge
Circular Road, Kolkata -19 Phone :
(033) 2461 4047/45 ; Fax : 2461 4048,
Email : [email protected]
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| Material
has been prepared for the general information only and
should not be used for specific applications without
securing competent advice. While the material is believed
to be technically correct, Insdag does not represent
or warrant its suitability for any general or specific
use and assume no liability or responsibility of any
kind in connection with the information herein |
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