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Set 1
Headquarters : Mount Poonamallee Road, Manpakkam, P.B.No.979 Chennai – 600 089
Tel: 044-2249 2747, 2249 3318 Fax: 044-2249 3317 e-mail: [email protected]
Regional Office : Park Plaza, 2nd Floor, 71, Park Street P.B.No. 9010, Kolkata – 700 016.
Tel: 033-2249 2700 Fax: 033-2249 9489, 2249 9705 e-mail: [email protected]
When bridges leap
across river and valley,
when flyovers soar over
busy towns and cities,
when highways reach out
to embrace the land,
distances diminish. And
with it, so do differences.
They link city to village,
homes and hearts and
pave the way for economic
progress.
ECC, India’s largest
construction organisation,
is proud to be associated
with the national
endeavour to knit the
country with the finest
bridges, flyovers, viaducts,
roads and highways.
Every project of ours
proves there is no such
place as far away. And
every citizen of our vast
country, is but a neighbour
a little way, down the road.
Side A-2 Side A-3
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Set 2
T he Acharya Jagdish Chandra Bose (AJC) Road inKolkata has a long history of acute traffic problems, in viewof its geographical location, criss-crossing streets withtraders, businessmen and common public as well as vehiclessurging forth with vibrant activity. A throbbing centre oftrade and commerce, AJC Bose Road is one of the busiestroads in Kolkata. Of late, this was plagued with everincreasing density of vehicular traffic as well as floatingpedestrians. Realising the severity of the problem, thegovernment and the public felt the urgent need for analternative arrangement to ease the traffic congestion.
It was decided that building a flyover in the middle ofthe road between Rabindra Sadan and Beck Bagan, one ofthe busiest commercial hubs connecting Park Circusgyratory in the East to Victoria gate on the West, would be along-term solution, for this critical problem.
The Government of West Bengal with loan assistancefrom JBIC, pressed into service the Hooghly River BridgeCommissioners (HRBC) for implementing this flyover.Yachiyo Engineering Co. Ltd., Japan was appointed toprovide the design and consultancy services and ECC, theConstruction Division of LARSEN & TOUBRO LIMITEDwas entrusted with the task of its construction.
The longest flyover
Having a length of 2.9km with approaches, this is thelongest flyover in the state of West Bengal and forms animportant intra-city corridor for vehicles moving into andout of Kolkata. This also paves way for better utilisation ofthe second Vidhyasagar Sethu bridge across Hooghly. The
location, geometry, length, route alignment, physicalconstraints above and below the ground, safety of men andmachinery, safety of pedestrians and continuously fleetingvehicles posed several challenges. However, ECC overcameall these constraints with its meticulous planning andsuccessfully executed this landmark structure on schedule- in 29 months.
Consisting of four lanes, this flyover has two separatecarriageways each having a width of 7.3m separated byarchitecturally designed elegant parapet walls. Thesuperstructure is built with composite steel-concreteconstruction. Steel ‘I’ beams and box girders are supportedon hollow steel columns decked with reinforced concreteslabs and topped with bituminous concrete.
Sub-structure
The steel columns capped by steel crossheads aresupported on bored cast-in-situ piles of 800mm and 1000mmDIA having varying depth from 34m to 47m. Steel anchorframes with anchor bolts are embedded in 2.0m thick pilecap for transferring forces and moments from the steelsuperstructure to the foundation.
F rom East to
West, the flyover takes off at
Park Circus gyratory, flies over
Ballygunje Circular Road and Sarat Bose
Road meandering over Camac Street,
Jawaharlal Nehru Road to land at Victoria South
Gate after crossing Cathedral Road. Successful
execution of an urban infrastructure as complex and
massive as AJC Bose Road flyover (2.9km long) in the heart
of a bustling metropolis is a landmark achievement. More
so, because this called for re-locating major underground
services lying below the middle of the road, towards vacant
spaces on the sides to make way for construction of
foundations.
Space constraint had its adverse effect on the sequence of
construction. Paramount importance had to be given to
safety - not only for construction work but also for the public
at large. Meticulous planning was done by HRBC and
Yachio Engineering Co. Limited, Japan for ‘Re-location of
utilities’ and integrating it as part of the main contract.
This bold and innovative style of Project Management can
act as a trendsetter for future urban infrastructure projects.
In order to construct within the stringent time-frame,
steel has been used extensively to form the main structural
framework of the flyover with only the deck and
foundations in concrete – a good example of using the
technique of composite construction.
The entire construction activity was split into eight
different segments along the length to facilitate traffic
diversion as well as to carryout construction, each segment
being independent of the other.
Though the people of Kolkata were put to certain
hardships, they demonstrated their forbearance in an
exemplary manner and co-operated with the authorities
in the spirit of development and realisation of a long-term
gain.
This flyover will relieve the historic city of its age old
problem – traffic jams and usher in a new era of socio-
economic upliftment in this commercial hub.
Side B-1 Side B-2
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Set 2
T he Acharya Jagdish Chandra Bose (AJC) Road inKolkata has a long history of acute traffic problems, in viewof its geographical location, criss-crossing streets withtraders, businessmen and common public as well as vehiclessurging forth with vibrant activity. A throbbing centre oftrade and commerce, AJC Bose Road is one of the busiestroads in Kolkata. Of late, this was plagued with everincreasing density of vehicular traffic as well as floatingpedestrians. Realising the severity of the problem, thegovernment and the public felt the urgent need for analternative arrangement to ease the traffic congestion.
It was decided that building a flyover in the middle ofthe road between Rabindra Sadan and Beck Bagan, one ofthe busiest commercial hubs connecting Park Circusgyratory in the East to Victoria gate on the West, would be along-term solution, for this critical problem.
The Government of West Bengal with loan assistancefrom JBIC, pressed into service the Hooghly River BridgeCommissioners (HRBC) for implementing this flyover.Yachiyo Engineering Co. Ltd., Japan was appointed toprovide the design and consultancy services and ECC, theConstruction Division of LARSEN & TOUBRO LIMITEDwas entrusted with the task of its construction.
The longest flyover
Having a length of 2.9km with approaches, this is thelongest flyover in the state of West Bengal and forms animportant intra-city corridor for vehicles moving into andout of Kolkata. This also paves way for better utilisation ofthe second Vidhyasagar Sethu bridge across Hooghly. The
location, geometry, length, route alignment, physicalconstraints above and below the ground, safety of men andmachinery, safety of pedestrians and continuously fleetingvehicles posed several challenges. However, ECC overcameall these constraints with its meticulous planning andsuccessfully executed this landmark structure on schedule- in 29 months.
Consisting of four lanes, this flyover has two separatecarriageways each having a width of 7.3m separated byarchitecturally designed elegant parapet walls. Thesuperstructure is built with composite steel-concreteconstruction. Steel ‘I’ beams and box girders are supportedon hollow steel columns decked with reinforced concreteslabs and topped with bituminous concrete.
Sub-structure
The steel columns capped by steel crossheads aresupported on bored cast-in-situ piles of 800mm and 1000mmDIA having varying depth from 34m to 47m. Steel anchorframes with anchor bolts are embedded in 2.0m thick pilecap for transferring forces and moments from the steelsuperstructure to the foundation.
F rom East to
West, the flyover takes off at
Park Circus gyratory, flies over
Ballygunje Circular Road and Sarat Bose
Road meandering over Camac Street,
Jawaharlal Nehru Road to land at Victoria South
Gate after crossing Cathedral Road. Successful
execution of an urban infrastructure as complex and
massive as AJC Bose Road flyover (2.9km long) in the heart
of a bustling metropolis is a landmark achievement. More
so, because this called for re-locating major underground
services lying below the middle of the road, towards vacant
spaces on the sides to make way for construction of
foundations.
Space constraint had its adverse effect on the sequence of
construction. Paramount importance had to be given to
safety - not only for construction work but also for the public
at large. Meticulous planning was done by HRBC and
Yachio Engineering Co. Limited, Japan for ‘Re-location of
utilities’ and integrating it as part of the main contract.
This bold and innovative style of Project Management can
act as a trendsetter for future urban infrastructure projects.
In order to construct within the stringent time-frame,
steel has been used extensively to form the main structural
framework of the flyover with only the deck and
foundations in concrete – a good example of using the
technique of composite construction.
The entire construction activity was split into eight
different segments along the length to facilitate traffic
diversion as well as to carryout construction, each segment
being independent of the other.
Though the people of Kolkata were put to certain
hardships, they demonstrated their forbearance in an
exemplary manner and co-operated with the authorities
in the spirit of development and realisation of a long-term
gain.
This flyover will relieve the historic city of its age old
problem – traffic jams and usher in a new era of socio-
economic upliftment in this commercial hub.
Side B-1 Side B-2
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Set 3
The hollow steel columns and crossheads fabricated ina nearby fabrication yard were transported separately tosite, spliced together with high strength friction grip (HSFG)bolts and erected as one piece on top of the anchor frame.The base was then filled with M-30 grade concrete up to anaverage height of 2.5m.
Superstructure
Composite steel – concrete construction was adopted forthe superstructure. Structural steel plate girders fabricatedwith an average depth of 1.5m was designed for simplesupport spans ranging in length from 25m to 33m andcontinuous spans of 75m. 45m steel box girders wereobligatory for spanning across 6 major intersections. Steelgirders fabricated in a yard close by were transported to sitein individual span length. These were then assembled atground and erected using heavy lift cranes.
Shear studs were provided to resist horizontal shear atthe junction of concrete deck and top flange of girders. Thiswas done by using a row of large stud dowels 150mm longx 19mm DIA with a club head of 32mm DIA, welded to thetop flange of the girders. Stringent quality control and qualityassurance checks including NDT was carried out atdifferent stages during fabrication of the structural steelmembers both for substructure as well as for thesuperstructure.
In-situ concrete was pumped on to forms resting on steelgirders to cast the deck. Wearing course of bituminousconcrete was laid on top of the deck using pavers. Strip sealtype expansion joints were used for 50/70/90mm gaps forlinear expansion of the deck along with the steelsuperstructure.
The approach to the bridge is provided by ramps madeof RCC cantilevered retaining wall construction. The eastbound ramp has a length of 82.5 m and the west boundramp is 89.9 m long from the gradient.
At grade improvements
Notwithstanding the unstinted attention given to createa brand new flyover, ECC’s efforts to restore the at graderoad to world class standards with elegant kerbs, mediansand footpath with pedestrian hand-rails will soon be evidentto the delight of the Kolkata public.
Underground Realities
More difficult than the complexity of the flyoverconstruction was the relocation of underground utilities -some known and others unknown. ECC had to go deepunderground tracing the century old sewer lines, watermains and dry utilities like gas lines, electrical and BSNLcables and re-route them in a structured way, to facilitatethe construction of foundation works.
Special mention has to be made of the construction of2000mm diameter RCC hume pipe sewer line adjacent tothe existing 125 year old egg shaped brick sewer (3530mm x2971mm). Adequate precautionary measures were taken tominimise chances of disturbing this age-old brick masonrystructure. Continuous interaction was made with KMC,CESC and BSNL to ensure that the re-located services areacceptable to them for future maintenance.
The construction work in the middle of the busy stretchdemanded highest standards of safety to pedestrians andmoving vehicles. ECC managed the traffic round the clock,in a systematic manner with the active support of KolkataTraffic Police and co-operation of the people of Kolkata. ECCthus excelled in its community out-reach and scripted asuccess story with involvement of all concerned.
The AJC Bose Road flyover will allow you to speed acrossthe breadth of Kolkata, at the same time, relieve the at gradecommuters in reaching their destination in relatively shortertime. Truly this is another landmark created by L&T, which
makes the Country proud.
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Project : Construction of AJC Bose Road flyoverbetween Rabindra Sadan and BeckBagan, Kolkata
Client : Hooghly River Bridge Commissioners,Kolkata (HRBC)
Funded by : The Transport Department,Government of West Bengal with loanassistance from Japan Bank forInternational Co-operation (JBIC)
Consultant : Yachio Engineering Co. Ltd., Japan
Contractor : Larsen & Toubro Limited,ECC Division
Duration : 29 months
Commencement : March 2001
Completion : August 2003
Length of flyover : 2.9km including approaches
Carriageway : Dual carriageway – each of 7.3m widthseparated by precast / in-situ crashbarriers.
Substructure : Bored cast-in-situ piles of 800mm and1000mm DIA (max. depth of pile –47m). Structural pier connected toanchor frame, on top of the pile cap.
Superstructure : 45m span structural steel box girderson major intersections with roadcrossings and 25m - 33m span ‘I’girders in all other locations. No. ofspans - 63 (25m x35 + 32mx5 + 33mx6+ 45mx6 + 75mx11 Nos.) 200 mm thickRCC deck slabs covered withbituminous concrete as wearing course
Scope of Works
Relocation of utilitySewer mains : RCC pipe 900 -2000mm DIA - 1590m
Water mains : MS pipe 1500mm DIA - 214m CI pipe 500mm DIA - 1080m
Gas mains - 890mElectrical cables - 8 segmentsTelephone cables - 8 segmentsDiversion and protection ofdry utility and provision ofspare ducts: PVC duct withconcrete surrounds - 6090m
FlyoverPile foundation - 800mm DIA - 107 Nos. - 1000mm DIA - 367 Nos.Pile cap - 96 Nos.
Structural steel fabrication & erection:Total quantity - 9900 tAnchor frame - 102 Nos.Column - 102 Nos.Cross head - 98 Nos.Plate girders - 25-33m spanBox girders - 45m spanContinuous spans - 75m
Structural concrete (excluding piling):Deck slab (dual carriageway) - 85 spanM30 concrete in Pile Cap andDeck Slab - 20970 CumReinforcement steel - 4300 tFormwork - 62340 SqmBridge Bearings - 783 Nos.Expansion joints Type A - 440 m Type B - 710 m
At grade road improvement worksGranular sub-base - 22800 CumWet mix Macadam - 22500 CumDense bituminous Macadam - 9850 CumBituminous concrete - 6000 CumRoad widening at intersections - 2 locationsKerbs - 13840 RMFootpath - 41480 SqmMetal beam crash barrier - 3110 mPedestrian barrier - 7440 m
Project Highlights
Side A-1 Side B-3
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Set 3
The hollow steel columns and crossheads fabricated ina nearby fabrication yard were transported separately tosite, spliced together with high strength friction grip (HSFG)bolts and erected as one piece on top of the anchor frame.The base was then filled with M-30 grade concrete up to anaverage height of 2.5m.
Superstructure
Composite steel – concrete construction was adopted forthe superstructure. Structural steel plate girders fabricatedwith an average depth of 1.5m was designed for simplesupport spans ranging in length from 25m to 33m andcontinuous spans of 75m. 45m steel box girders wereobligatory for spanning across 6 major intersections. Steelgirders fabricated in a yard close by were transported to sitein individual span length. These were then assembled atground and erected using heavy lift cranes.
Shear studs were provided to resist horizontal shear atthe junction of concrete deck and top flange of girders. Thiswas done by using a row of large stud dowels 150mm longx 19mm DIA with a club head of 32mm DIA, welded to thetop flange of the girders. Stringent quality control and qualityassurance checks including NDT was carried out atdifferent stages during fabrication of the structural steelmembers both for substructure as well as for thesuperstructure.
In-situ concrete was pumped on to forms resting on steelgirders to cast the deck. Wearing course of bituminousconcrete was laid on top of the deck using pavers. Strip sealtype expansion joints were used for 50/70/90mm gaps forlinear expansion of the deck along with the steelsuperstructure.
The approach to the bridge is provided by ramps madeof RCC cantilevered retaining wall construction. The eastbound ramp has a length of 82.5 m and the west boundramp is 89.9 m long from the gradient.
At grade improvements
Notwithstanding the unstinted attention given to createa brand new flyover, ECC’s efforts to restore the at graderoad to world class standards with elegant kerbs, mediansand footpath with pedestrian hand-rails will soon be evidentto the delight of the Kolkata public.
Underground Realities
More difficult than the complexity of the flyoverconstruction was the relocation of underground utilities -some known and others unknown. ECC had to go deepunderground tracing the century old sewer lines, watermains and dry utilities like gas lines, electrical and BSNLcables and re-route them in a structured way, to facilitatethe construction of foundation works.
Special mention has to be made of the construction of2000mm diameter RCC hume pipe sewer line adjacent tothe existing 125 year old egg shaped brick sewer (3530mm x2971mm). Adequate precautionary measures were taken tominimise chances of disturbing this age-old brick masonrystructure. Continuous interaction was made with KMC,CESC and BSNL to ensure that the re-located services areacceptable to them for future maintenance.
The construction work in the middle of the busy stretchdemanded highest standards of safety to pedestrians andmoving vehicles. ECC managed the traffic round the clock,in a systematic manner with the active support of KolkataTraffic Police and co-operation of the people of Kolkata. ECCthus excelled in its community out-reach and scripted asuccess story with involvement of all concerned.
The AJC Bose Road flyover will allow you to speed acrossthe breadth of Kolkata, at the same time, relieve the at gradecommuters in reaching their destination in relatively shortertime. Truly this is another landmark created by L&T, which
makes the Country proud.
C10
075
5025
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075
5025
Y10
075
5025
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075
5025
C10
075
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5025
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Project : Construction of AJC Bose Road flyoverbetween Rabindra Sadan and BeckBagan, Kolkata
Client : Hooghly River Bridge Commissioners,Kolkata (HRBC)
Funded by : The Transport Department,Government of West Bengal with loanassistance from Japan Bank forInternational Co-operation (JBIC)
Consultant : Yachio Engineering Co. Ltd., Japan
Contractor : Larsen & Toubro Limited,ECC Division
Duration : 29 months
Commencement : March 2001
Completion : August 2003
Length of flyover : 2.9km including approaches
Carriageway : Dual carriageway – each of 7.3m widthseparated by precast / in-situ crashbarriers.
Substructure : Bored cast-in-situ piles of 800mm and1000mm DIA (max. depth of pile –47m). Structural pier connected toanchor frame, on top of the pile cap.
Superstructure : 45m span structural steel box girderson major intersections with roadcrossings and 25m - 33m span ‘I’girders in all other locations. No. ofspans - 63 (25m x35 + 32mx5 + 33mx6+ 45mx6 + 75mx11 Nos.) 200 mm thickRCC deck slabs covered withbituminous concrete as wearing course
Scope of Works
Relocation of utilitySewer mains : RCC pipe 900 -2000mm DIA - 1590m
Water mains : MS pipe 1500mm DIA - 214m CI pipe 500mm DIA - 1080m
Gas mains - 890mElectrical cables - 8 segmentsTelephone cables - 8 segmentsDiversion and protection ofdry utility and provision ofspare ducts: PVC duct withconcrete surrounds - 6090m
FlyoverPile foundation - 800mm DIA - 107 Nos. - 1000mm DIA - 367 Nos.Pile cap - 96 Nos.
Structural steel fabrication & erection:Total quantity - 9900 tAnchor frame - 102 Nos.Column - 102 Nos.Cross head - 98 Nos.Plate girders - 25-33m spanBox girders - 45m spanContinuous spans - 75m
Structural concrete (excluding piling):Deck slab (dual carriageway) - 85 spanM30 concrete in Pile Cap andDeck Slab - 20970 CumReinforcement steel - 4300 tFormwork - 62340 SqmBridge Bearings - 783 Nos.Expansion joints Type A - 440 m Type B - 710 m
At grade road improvement worksGranular sub-base - 22800 CumWet mix Macadam - 22500 CumDense bituminous Macadam - 9850 CumBituminous concrete - 6000 CumRoad widening at intersections - 2 locationsKerbs - 13840 RMFootpath - 41480 SqmMetal beam crash barrier - 3110 mPedestrian barrier - 7440 m
Project Highlights
Side A-1 Side B-3
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CyanMagentaYellowBlack
CMYK
Set 1
Headquarters : Mount Poonamallee Road, Manpakkam, P.B.No.979 Chennai – 600 089
Tel: 044-2249 2747, 2249 3318 Fax: 044-2249 3317 e-mail: [email protected]
Regional Office : Park Plaza, 2nd Floor, 71, Park Street P.B.No. 9010, Kolkata – 700 016.
Tel: 033-2249 2700 Fax: 033-2249 9489, 2249 9705 e-mail: [email protected]
When bridges leap
across river and valley,
when flyovers soar over
busy towns and cities,
when highways reach out
to embrace the land,
distances diminish. And
with it, so do differences.
They link city to village,
homes and hearts and
pave the way for economic
progress.
ECC, India’s largest
construction organisation,
is proud to be associated
with the national
endeavour to knit the
country with the finest
bridges, flyovers, viaducts,
roads and highways.
Every project of ours
proves there is no such
place as far away. And
every citizen of our vast
country, is but a neighbour
a little way, down the road.
Side A-2 Side A-3
