Jan - June 2015Valume : 9401

“We will make electricity so cheap that only the rich will burn candles.”

[Vision of a great prolific inventor – Thomas Alva Edison (1847-1931) holding over 1000 US patents to his credit]

We are pleased to publish Jan- June, 2015 issue of Gammon Bulletin.

We take pleasure in presenting some of our recent significant

achievements, successes, learning and events from across the country to

our Gammon family, our esteemed customers and other beloved stake

holders.

The lead article in the Bulletin is on Design and Construction aspects of

Approach structures at Wazirabad which forms an important part of

India’s monumental bridge across Yamuna river – the Signature Bridge at

Delhi. Keeping in view the beauty of Signature Bridge, approaches to this

bridge were conceived and designed to create overall aesthetically

pleasing structure. Authored by Mr. Arvind Singh, the article explains

how challenges arising due to various conflicting requirements in

congested locations were successfully met by creative construction-

friendly design ideas and innovative construction methodologies while

keeping an eye on cost-effectiveness and without compromising on

aesthetically pleasing attributes. The success story of this prestigious

mega project, highlights the fact that proactive involvement of

Construction Engineers right from initial stages and close interaction

with Design Engineers goes a long way in conceiving, designing and

delivering desired product meeting all the pre-set objectives.

Second article in the Bulletin covers Fast Track construction of Residential

towers at Runwal Project in Mumbai wherein available resources were

effectively utilized to give optimum cycle times.

The third article briefly highlights Gammon’s contribution in construction

of Metro in Kolkata.

In our quest to continually improve the Bulletin, we will be glad to receive

feedback and suggestions from our valued readers to make Gammon

bulletin more and more interesting and informative for the readers.

Your feedback and suggestions may please be sent to

bulletin@gammonindia.com

Wazirabad Approaches 03

High Rise Residential Towers 11

Gammon's Contribution in Kolkata Metro 13

Works-in-Progress 16

News Flash 17

Company News 18

Cover Photo: 5 x 660MW Power Plant, Tuticorin, Tamilnadu

DESIGN AND CONSTRUCTION ASPECTS OF WAZIRABADAPPROACH STRUCTURES

Conceived by Delhi Tourism & TransportDevelopment Corporat ion, theSignature Bridge Project across rziverYamuna at Wazirabad in Delhi is indeeda Signature monument for Delhi andpromises to become modern touristdestination for the capital of India.Apart from innovating design of cablestayed bridge with eccentric bowshaped steel pylon, innovations havealso been made for the approachstructures flanking either ends of thebridge.

Some of the innovative features in theapproaches include:-

ä Aesthetically pleasing viaductstructures by use of most modernconstruction techniques available inthe country to construct a highlydurable structure in minimum time.

ä Precast- Post-tensioned-fully integralsegmental- Concrete -Box Girderstructure designed and constructed, forthe first time in India and that too forsuch a mega project.

ä Superstructure comprising ofprecast-segmental-single cell-boxspine grider with a pair of precastcurved ribs on each side of face, toe n h a n c e a e s t h e t i c b e a u t y o fsuperstructure as well as support the tipof cantilever of box deck slab.

ä Shape of the pier following the flowof forces, integral connection betweenthe piers and superstructure by cast-in-s i t u p i e r d i a p h r a g m t h e r e b yeliminating Bearings, which are themost brittle and fragile component inbridge system.

ä Dedicated acceleration and de-acceleration lanes for merging anddemerging loops in main flyover ofwestern approaches.

ä Merging and demerging loops,truncated precast segmental single cellgirder having varying deck for viaductportion.

äLoop and main flyover segmentsstitching laterally at deck level by cast-in-situ RCC slab/diaphragm, therebyeliminating expansion joints to avoidjerk in traffic ride.

ä Use of Self compacting concrete ofM60 & M65 grade, (designed in house)for the first time in India for all piers andpier diaphragms of their work.

ä Well (Cassion) foundation with jackdown sinking technology.

1. Details of Project

Proposal to constructs a new 8-lanebridge across river Yamuna 600mdownstream of the existing barragecum bridge at Waziradab, Delhi was ano u tco m e o f d e c i s i o n o f D e l h iGovernment of making a land markstructure in Delhi and to develop thesurrounding area into a touristDestination. The proposed bridge willjoin marginal Bund Road at Khajuri Khasintersection on eastern side and willjoin Road No.45 (Outer Ring Road) onthe western side.

Assignment also include developmentof Approaches on Western & Easternsides of proposed Signature Bridge,Fig.1. The scheme developed was notonly to provide the approach toSignature Bridge, but also to eliminatetraffic congestion along the road no-45(Outer Ring Road) in Western approachand at Khajuri Khas crossing in Easternapproach.

On Western side, grade separatorscomprises of flyovers, loops and rampswere constructed to ensure signal-freetraffic movement at the proposedintersection of the bridge with Road

No.45 and exiting intersection atTimarpur, Nehru Viahr and Wazirabad,Fi g. 2 & Fi g. 3 . R o a d w i d e n i n g,construction of footpath, storm waterdrains, cycle track and subways werealso part ofWestern approach.

E a s t e r n a p p r o a c h i n c l u d e sconstruction of embankment of about2.0 Km length, river training work, riverprotection works, widening of existingroads, construction of roads, footpath,cycle track, storm water drain etc. Inaddition, 6 lane flyover was alsoc o n s t r u c t e d a t K h a j u r i K h a sintersection with rotary at ground levelto ensure signal-free movement, Fig.3.

2. Geometric design

The alignment and position ofproposed Signature Bridge was pre-fixed and challenge was to design ainterchange on west side of the samewithin the available space which issurrounded by many boundaries aslisted below.

(a) Existing Khyber pass bounding wallof DMRC was on west side.

(b)Tibetan colony on the south side.

(c) Grave yard is located on north side.

Various planned entries/exit have to beaccommodated within the availablespace without any encroachment:-

� Entry to and exit from proposed

Fig.1. Key Plan

Fig.2. Model view of western approach

to signature bridge

Fig.3. Model view of eastern approach

Arvind SinghSr. Manager (Projects)

Signature Bridge to ISBT side.

� Entry to end exit from proposedSignature to Azadpur side.

� Entry to and exit from proposedSignature Bridge to existingWazirabad barrage cum bridge.

� Entry to and exit from proposedSignature Bridge toTimarpiur.

� Wazirabad barrage cum bridge toISBT and vice versa.

� Wazirabad barrage cum bridge toAzadpur and vice versa.

� Azadpur to ISBT and vice versa(along Road No.45-Outer Ring Road)

After evaluating many alternatives,geometr y though complex wasdesigned within available space whichwas best possible and meets allgeometrical requirements of standardpractice,Fig.2.

Apart from vehicular traffic cycle trackswere also planned for all suchmovement except to Signature Bridge.Co m b i n i n g e a s te r n & We s te r napproach nearly 50000 sqm of openportion of elevated flyover 25000 sqmof closed portion of viaduct & 90000sqm of embankment was required to beconstructed.

Flyover to be constructed was ofdifferent carriageway widths 9.7 m, 11m &12.5 m. In addition, there are zonesof acceleration and de-acclelerationbays in western approach on the flyoveralong the Road No.45 (Outer RingRoad). Acceleration bay represent thezone wherein extra width of one lane isgradually provided over and aboveconventional main carriageway widthso that traffic can be branched out thediverging road from main carriagewayroad.

Designing and constructing varyingwidths of superstructure and alsomaintaining the rhythm of structuralsystem opted for other conventionalzones i.e precast segmental portion wasa challenging task. This has beenachieved by planning and close co-o rd i n a t i o n b e t we e n s t r u c t u r a ldesigners, client and contractor fromconception to completion.

3. Form of superstructure cross-section

Broadly, superstructure comprises ofprecast segmentally constructed, singlecell box spine grider of constant depthhaving precast curved ribs on both of itsside to support the wide cantilever slabat its tip.3.0m long precast segmentaccommodation two nos of curved ribson each side of spine box segment wasadopted. Outer profile of curved ribsand precast segment has been soshaped so as to maintain smoothcurved bottom profile from one end toa n o t h e r e n d. Th e s e r i b s we remonolithically connected to spine boxat web soffit junction at it bottom endand cantilever flange tip at its upperend.

Curved ribs has been shaped of varyingwidth and varying thickness. Continuityof numbers of varying width of ribs incombination to spine box forms, archshaped opening in between ribs inelevation to enhance the aestheticappeal of superstructure, Fig.4 and Fig.5Thickness of ribs was governed bystructural strength requirement so as tosustain the design stresses.

As in all jobs, heavily dependent onlarge scale precasting, standardizationof formwork was key feature ofplanning. It was planned to haveminimal component for casting ofboxes of variable box width so thatmaximum repetition of resource offormwork can be done.

For three different width of boxeshaving different carriageway width of

9.7m (10.3 m wide box), 11m (12.0 mwide box) &12.5 m (13.2 m wide box),two nos of spine box and two types ofcurved ribs, Fig.8, 9, & 10 have beenadopted as indicated inTable 6 below:-

Table 6: Spine & Rib Detail

This was only possible by chargingradius of spine box profile w.r.t radius ofouter curved profile of rib but whiled o i n g s o c o m m o n t a n g e n t i smaintained at the intersection of twoFig.8, Fig.9 and Fig.10. Such planninghad resulted in requirement of only twotype of moulds each for rib as well asprecast segment for three differentdeck width.

For casting of segment, two long linebeds and one short line bed were used.Short line bed was exclusive used for12.0m wide segment (for spans havingplan curvature limited to 1000m curve)while long line beds were used for10.3m wide, 12.0m wide & 13.2 widesegment. Total numbers of segmentswhich were cast for the elevated part ofeastern approach as well as westernapproach structure are indicated inTable.7 below:-

Table 7: Nos. of precast segments

Same spine boxes and ribs were alsoused for varying width of decks inacceleration and de-acceleration zone.

10.3 mWideBox

12.0 mWideBox

13.2 mWideBox

Type ofSpineBox

SpineBoxType-1

Spine BoxTypes-2

Type ofRib

Rib Type-1 RibType-2

Nos. of segments for Each Deck WidthDeckWidth

10.3mWideBox

12.0mWideBox

13.2mWideBox

Total

Numberof 3.0mLongSegment

201nos

780nos

150nos

1131nos

Fig. 4: Artistic impression of superstructure

Fig. 5: Artistic impression of integral

pier with superstructure

Fig. 8: Cross-section of 10.3 m wide box

(Spine Box Type-1), (RIB TYPE-1)

4. Standardization of spans

Effort has been made to have minimalexpansion joint and to have continuousunit of larger length as large as possibleso as to have smooth rideable quality.Continuous unt of four spans, threespans & two spans were adopted.

In Western approach, number of span ina continuous unit and location of pierswere guided by location of start andf i n i s h l o c a t i o n s o f d i v e r g i n g(acceleration bay) & merging zones (de-acceleration bay) where in expensionjoint between spans are necessary.Three spans units of length of117m(35.25m+46.5m+35.25m) & 102m (32.25 m+37.5m +32.25m), twospans units of length of 64.5 m(32.25m+32.25m) were adopted.

In Eastern approach, where there wasno such limitation, two nos of fourspans continuous unit of length of163.5 m(35.25 m+ 46.5 m +46.5 m+35.25 m), Fig.11 & one unit of threespans continuous unit of length of 117m (35.25 m +46.5 m +35.25 m) of dualcarriageway of 11.0 m carriageway wasadopted to form a flyover total length of444 m over Khajuri Khas crossing.

As it can be seen that continuousmodule of varying spans or varyingspan length were being made either byeliminating a middle spans or reducingthe span length by extracting one ormore segments from the central zone oflongest spans. A constant profile on theouter surface of the segment wasadopted for a box of given carriageway.

Variation of structural thicknessaffected only internal box. Segment incenter of span which were planned tobe extracted out to have a smaller spanhave similar prestressing duct as inadjacent segment. Such planning ind e s i g n s t a g e h a d r e s u l t e d i nstandardization of span configurationand segment moulds.

After achieving minimum cubestrength of nearly 25 mPa, shutters wereremoved and the ribs was transferred inthe stacking yard for curing andstacking. Due to large numbers of ribsto be cast for the project and paucity ofspace available in the casting yard,multiple stacking of precast ribs wasdone, photo 14.

5. Casting of precast ribs & precastsegment

The curved ribs were cast well inadvance of casting of precast segment.Since all sides of ribs will be visuallyvisible in erected superstructure, henceit has been planed to achieve a formfinish to all surfaces of ribs. To achievethe same, ribs has been cast by placingthe shutter vertically in a tub (in castingyard), Photo 11. Since reinforcementwas required to be projected out fromboth of ribs end to form a monolithicconnection with box, tub is filled withsand, photo 12. Such pre-precastcurved ribs were placed in the mould ofprecast segment, Photo 14. Once all ribs(4 nos) of segment were in finalposition, outer shutter of web andbottom shutter of cantilever which wasin multiple parts were assembled overthe casting bed, Photo 15. Prefabricatedreinforcement cage of segment waslowered into mould and then onlyinternal mould of box segment wasintruded into the same.

P r o v i s i o n i n p r e f a b r i c a t e dReinforcement cage of segment hasbeen made so that projec t ing

reinforcement from precast rib end canbe taken inside it.

Both short line as well as long linemethod of casting has been adoptedfor casting of segment, Photo 17.Although inner shutter of spine box wasin one piece and can be installed andextruded out on rails (mounted oversoffit slab) without any difficulties butouter shutter of spine box was made upin many parts (due to presence of ribs)and requires careful assembly afterplacement of pre-precast ribs as well asextraction of the same in reversesequence after casting of segment.

Fig. 9: Cross-section of 12.0 m wide box

(Spine Box Type-2), (RIB TYPE-1)

Fig. 10: Cross-section of 13.2 m wide box

(Spine Box Type-2), (RIB TYPE-2)

Photo 11: and Photo 12: Tub for casting of curvedribs-base of tub filled with sand to embed

projected reinf at the end of curved rib

Photo 13 : Multiple level of stacking of curved ribs

Photo 14 : Placement of ribs of segmentsin long line bed

Photo 15 : Placement of external shutter

of web & cantilever of segment

Photo 16 : Placement of pre-fabricatedreinforcement cage in mould

Photo 17 : Lifting of segment from bed

6. Stacking of precast segment

After attainment of required strength ofsegment, it was lifted from casting bed,Photo 17 and transferred to stackingyard where they were cured. Due topaucity of space in casting yard,multiple level (two or three level) ofstacking of segments was adopted,Photo 18. Structural adequacy of lowersegment to take the weight ofsegments on the upper level has beenchecked before such system wasadopted. Lower segment got itsuppor ted at web locat ion bypositioning the same on pedestal.

7. Provision of shear keys at joints ofprecast segments

Small sized shear keys were provided inthe webs on the end faces of precastsegments. The same has beencontinued till the inner face of the webso that the excess glue can beevacuated and not get entrappedduring temporary prestressing. Foraesthetic reasons, the shear keys werenot exposed at the outer face of web,Photo 17. Due to presence of internaltendons, shear keys are positioneddifferently at every segment byeliminating the shear key where duct isplaced at the face of segment. Shearkeys were formed one one end facesegment by casting against already castsegment and on the other end the faceby placing a profiled steel bulkhead.The female part of the shear key wasinvariably formed at the fixed steelbulkhead. The shear keys werepositioned such that duct was alwayslocated at the flat male part of thesegment.

Apart from the web area of the boxgirder, shear keys were also provided inthe deck slab and soffit slab to assist thealignment process during erection. Thedeck slab shear keys also ensures that itbehaves contiguously for distributing

local wheels load effects longitudinally.

8. Construction of superstructure

All three forms of erection techniquesas given below which were used in thepast for various projects wereemployed for construction of variousstretches of flyover:-

� Using Launching girder (Overhead),Photo 19 and Photo 20.

� Using Ground Supported tresties/Staging supporting trollies inconjunction with crane (of requiredcapacity and boom length) forlifting of segments, Photo 21 andPhoto 22.

� Using Ground Supported Trestlesstaging supporting trollies inconjunction with potable gantriesfor lifting of segment. In such caseportal gantries were straddlingnearly two carriageway width,Photo 23 and Photo 24.

Photo 18 : Multiple tier stacking of precast segment

Photo 19 and Photo 20: Precast segments are

hung from lunching girder

Photo 21 and Photo 22: Ground supported trestles/

staging supporting segments lifted by crane

Photo 23 and Photo 24: Ground supported trestles/

staging supporting segments lifted by portal gantry

straddling two carriageway width (30 m approx)

Span by span construction wase n v i s a g e d f o r e r e c t i o n o fsuperstructure. After dry matching ofsegments, epoxy application andtemporary prestressing was done oneby one. After stressing of first stagecables, end of each span was supportedon trestles mounted at top of commonfoundation provided for permanentpiers. As a additional precautions, suchtrestles were also connected topermanent pier to transfer anyunforeseen horizontal forces duringconstruction.

First stage cables stressed weresufficient to span the self-weight oferected span, temporary prestressingframes and construction load.

Once all such individual spans of acontinuous unit were erected, in-situdiaphragm was being made which notonly establish the continuity ofsuperstructure but also forms am o n o l i t h i c m o m e n t r e s i s t i n gconnection with intermediate as well asend piers, Second stage cables whichwere in the form of cap cables (at top ofdeck) and long cables (at bottom ofdeck) were threaded and stressed. Aftercompletion of all second stage cablesstressing, temporary supports providedat the end of each span were graduallylowered down so as to transfer the loadto permanent piers.

Precast rib were placed in position indiaphragm external shutter to maintainthe continuity of ribs pattern on outerfacia of erected superstructure keepingsame spacing with abjacent ribs as it

was kept for precast segment, Photo 25,Photo 26 &Photo 27.

For casting of intermediate / anddiaphragms of all continuous unitssuperstructure, self compactingconcrete was pumped as it was notpossible to vibrate such highlycongested reinforced zone, Photo 27.

9. Construction of acceleration andde-acceleration bay

Design & construction of supers t r u c t u re a n d s u b s t r u c t u re o fAcceleration bay and De-Accelerationbay, was challenging considering thedeck carriageway width has to begradually and smoothly widened bymaintaining the same form of structure

and same type of construction.

It would be very uneconomical solutionto have a precasting member of varyingwidth to exactly match the requiredwidth of varying width deck. Hence asolution of multiply standard precastmember in conjunction with variablewidth of cast-in-situ stitch betweensuch multiply standard precastmember was adopted to achievedesired result.

Twin precast member (spine box withribs) were chosen from available formwhich has been used for standardsuperstructure and were transverselyintegrated by cross stitching in situbetween the two.

Such transition zone has been dividedin three sub zones as given below:-

Transition zone-1, This is intial zone ofvarying width of carriageway whereone sided carriageway width remains tobe of constant width but othercarriageway width was required to begradually increased. To achieve same,two boxes of standard width (12.0 wideb o x , s p i n e b o x t y p e - 2 ) w e r eindependently erected with the sameconstruction methodology as adoptedfor standard span followed by in-situstitch in the varying between two.

Transition zone-2, This the middle zoneof varying width of carriageway. Toachieve the same, two boxes (as usedfor 10.3m wide box, spine box type-1)with curtailed arm on one side wereerected independently with the sameconstruction methodology as adoptedfor standard span followed by in situstich between two in varying gap. Suchbox section was geometrical un-symmetrical about vertical axes due tocurtailed arm on one side of boxresulting in plan eccentricity Tocounteract such effect of planeccentricity, transverse slits, Fig.34 wasprovided in deck slab (on cantilever

Photo 25 : Erected superstructure rested on endtrestles with gap between two with pier

reinforcement projected between two units

Photo 26 : Staging and precast rib put in position forin-situ connection of superstructure units with pier

Photo 27 : Self compacting concrete ispoured with pumps

Photo 28 : Finished structure

Photo 29: Tansition zone-1 : - boxes(12.0 wide each) of dual carriage way were jain

by cas-in-stitch (of varying width)

side) of precast segment so thatprestressing force does not flow in theun-symmetric part and effect ofprestress remains symmetric aboutspine box section. Such slits wereprovided at precast segment joints aswell as in the middle of segment. Aftercompletiton of all prestressing in spinebox, such as transverse slits were filledwith grout. A cable was also stressedthrough hole left in cantilever tip toimpart axial compression across suchslited joints in slab after achievement ofrequide strength of grout.

Transition zone-3, This is end zone ofvarying width of carriageway. Toachieve the same, two boxes (as usedfor 12.0 m wide box, spine box type-2)with curtailed arm on one side wereerected independently with the sameconstruction methodology as adoptedfor standard span follow by in-situ stitchin the varying gap between two chosenbox section was also geometrical un-symmetrical about vertical axisresulting in plan eccentricity, nos ofstrands in predefined cables locationwere varied on left side of the box andright of the box so that no net primarymoment is generated about verticalaxis of the box section. This was onlypossible as box spine used in this zonewas quite wide and plan eccentricitywas not too much. Of course such un-symmetric prestressing draped in webshad caused torsion and box structurehas been designed for the same.

Photo 30: Transition zone-2 : - twin boxes (use

10.3 m wide deck) with curtailed arm on one

were joined by cast-in-stitch (of varying ..)

while other carriagway was made with regular

Photo 31: Transition zone-3 : - twin boxes (use

12.0 m wide deck) with curtailed arm on one

were joined by cast-in-stitch (of varying ..)

while other carriagway was made with regular

Due to variations in structural system ofthree transition zones, all suchtransition zones were separated byexpansion joint.

In all three transition zones, pierd i a p h r a g m s ( e n d a s w e l l a sintermediate diaphragm) of bothjoining boxes were extended andjoined together to form a portal bentalong transverse direction also. Firstlypier diaphragms were done for lengthequivalent to box width whileindependently erecting superstructurePhoto 29, Photo 30 and Photo 31. Gapbetween two pier diaphragms alongwith in-situ slab was done in one gousing shr ink age compensat ingcompound.

Double-loop Joint was adopted at allcast- in-place connection of deck slabfor joining of two independent precastbox segment. In such arrangement ofconnection, side -loop bars wasprovided at the end of each precastsegment while casting the segment.The center-Loop bars which is annularin shape with a welded lap isoverlapped with side-loop barsprojecting from both precast boxsegment.

10. Erection of precast segment oftransition zones

Erection of un-symmetrical segmentsfor transit ion zones is equal lychallenging. The lifting points werematched with geometrical plan CG ofsegment so that segment remainshorizontal in all stages. Most of erectionof such un-symmetrical segment wasdone by overhead launching girder. Toenhance transverse stability of erectedspan (after stage-1) on temporary stoolat both end of span, precast concreteblock were planned at top of deck andkept it there till superstructure isintegrated with piers (till end of stage-2erection), Fig.32 and Fig.33.

11. Construction of piers

The forms of the pier follow the flow offorces. Connection between the piersand superstructure has been madeintegral. Wall shaped pier of varyingwidth and varying thickness at top withsuperstructure. Being a integralstructure, each continuous unit wassupported by set of pier. At expansionjoint, twin piers were provided tosupport each continuous unit on eitherside of joint independently by separatepiers, Photo 36. End piers were madeslimmer than intermediates piers asend piers has to flax more thanintermediates piers as end piers due tostrain included effect such as shrinkageand cheep of concrete, globaltemperature changes and elasticshortening of concrete due to stressingof continuity cables. Being a integralpier with ver y high rigidity ofsuperstructure and foundation, piertend to deflect in double curvatureinducing very high moments at top andbottom with contra flexure nearly atmid height. Hence thickness of all piersof continuous unit varies keepingminimum at mid from structural pointof view. Thickness intermediate andend piers varying 1.2 m (at top andbottom) to 1.0 m (at height) & 0.75 m(attop at bottom) to 0.6 m (at mid height)respectively, Photo 36 and Photo 37since access for vibration of thin wallshaped pier was not practical , itplanned to use self-compactingconcrete for casting of pier & pierdiaphragm. About 50 cum self-compacting concrete of M60/M65grade was used for casting of piers pierdiaphragm in the project.

Full height of pier (7.5 m Approx.) wascast in one go. No tie bolt was allowedto pass through pier shaft to supportthe shuttering around. This wouldrequire a very strong arrangement of

Photo 32 and Photo 33: Erection of unsymmetrical

Segments by overhead launching girder

Photo 37 : Expansion jt piers (0.75 m thick at top

& bottom & 0.6 m thick in center)

form work to with stand the fluidpressure of compacting concrete,Photo 46.

Photo 34 : Reinforcement detail of pier-compatible

to requirements of high seismic zones

Photo 35 : Shuttering for pier (self compacting

concrete is used)

Photo 36 : Intermediate pier of unit (1.2 m thick

at top & bottom & 1.0 m thick in center

12. Project site stratigraphy

Stratigraphy along the project siteconsist overburden soil underlaid byquartzite. The depth of rock variessubstantially across the bridge site. Ingeneral, rock is from west to east ofproject side.

Hence in western approach, openfoundation were provided whereverrock is available at shallow depth andgroup of piles socketed in rock wereprovided as foundation where rock isavailable at medium depth.

Rock was severely weathered at shallowdepth and moderately weathered atlarge depth. The rock core recoveryranges from 0 to 25% with 0 to 10% inthe the zones 3 m - 4 m below the soilinterface. The Rmr values range from atshallow depth.

In Eastern approach, rock was at veryhigh depth, hence well (cassion)foundation adopted and rested indense soil stricture.

13. Construction of open foundation

Isolated footings as well as combinedfootings were provided depending onspace constraints, pier spacing etc.Some combined footings wereconstructed in stage with verticalconstruction joint based on trafficmanagement at ground level along ringroad.The same foundation were used torest trestle supporting overheadlaunching girder as well as trestlesupporting spans temporarily (afterstressing of stage-1 cables). Design hasbeen made for each foundation totransfer such construction loads duringconstruction period as well aspermanent loads during its service life.

14. Construction of well foundation

Detailed soil survey was conducted atevery pier location and results gavemore or less similar soil characteristics.Upper stratum comprises of fine send(upto 10.0 m) followed by silty clay withsmall pebbles (upto 19.5 m). Lowerstratum (19.5m to 60.0 m) consists withpredominantly of sandy silt low tomedium plasticity. SPT value rangingfrom 25 to more than 100 reportedexhibiting very stiff to hard consistencyof strata.

A detailed study was carried out to

identify the depth of potential ofliquefaction in upper layer of soil and ithas been concluded that upper 10-12 msoil are having liquefaction potentialunder seismic event. The formationlevel of flyover was nearly 16 m abovethe bed level. Proposal of pile was notpractical as it was becoming too slenderin seismic event.

Hence proposal of well (caisson) withstaining thickness of 0.8 m wasprovided for a depth of 35-39 m for wellfoundation. A separate well foundationwas providing for supporting eachcarriageway, “Jack down” methodsupplemented with air jetting/ waterjetting was used for sinking of well,Photo 38.

There are 24nos of similer type of wallswhich were sunk in Eastern approachusing this innovating technique.

In Western approach, some part ofapproach structure was in river zone. Insuch, river zone, rock was available atshallow depth (nearly 10.0 m belowriver bed level). Open excavation wasnot possible in such zone. Hence wellfoundation was adopted for suchpurpose which are rather complexbecause they were required to befounded on sloping rock which is alsothe scour level. Moreover stringentguidelines of“Standard code of practiceof Indian Roads Congress” for having asump (shear key) of 600 mm at the baseof well into soft rock of diameter ofnearly 1.5 to 2 m less than inner dredgehole was required to be followed. Inaddition vertical anchoring of wellfoundation by reinforcing bars was alsorequired to be followed.

The foundations adopted wereconventional wells sunk by the jackdown method with thickened staining.Prior to the wells reaching thepredetermined founding level, rocklevel was established by probing /

Photo 38 : Jack down method employed

for sinking of well

boring all along the outer periphery ofwell.

Drilling of 193.5 mm O.D was first donein soil underneath well curb andcontinued up to nearly 500 mm into therock. A partially perforated pipe waslowered down in each of these drillingof 150 mm dia is continued upto nearly6.0 m into rock. Then the reinforcent barof 32 mm dia along with other bunch ofreinforcement is lowered down andmicropile was grouted.

Once all micropiles in the well wereinstalled one by one and gainedadequate strength, then well wascleaned up to rock level below well curbby air lifting process.

By approximating the rock contour, inthe dredge hole, steel ring of 10 mmthick plate with stiffeners of 150 mmsize channel was fabricated and lowreddown inside the periphery of the well.Gap between the ring and slopingcutting edge of the wall is filled withconcrete had hardened, wells weredewatered and the rock portion insidethe steel ring is excavated to a depth of600 mm in the dry. The rock surface iscleaned and the bottom opening insidering along with upper part of bottomplug is concreted. Thereafter a R.C.Cslab was cast which was mainly as asafeguard to receive the upwardpressure on the plug. The well is thencompleted in the normal manner.Inside opening of well was filled withsand and capped by a layer of concrete.The well cap and pier were thereafterexecuted in the conventional manner.

15. Construction of closed portion ofRamp

It was planned to have a reinforcedearth wall structure for all the rampadjoining to open portion of flyover.High performance concrete with Resklifrom liner finish of M45 has been used infacia panels of RE wall to create bamboofinish in concrete, Fig.39, Fig. 40

Fig 39 Junction detail of viaduct and

ramp (RS wall structure)

Being a integral structure, where end

pier also flex longitudinally along with

superstructure due to change in daily

and seasonal temperature, it was

planned to have separate structure (in

the form of multiply columns) to

support the dirt wall /approach slab at

its top. Expansion joint was provided in

between dirt wall & superstructure to

accommodate the movement of

superstructure. RS wall panel facia was

also provided covering multiply

c o l u m n s w e r e s o s p a c e d a n d

positioned so that it that it does not

interfere with steel strips holding RS

wall panels.

16. Conclusion

The successful completion of such

mega and challenging project has

revealed that the difficult site condition

can be dealt by innovative construction

techniques and still structure can be

made aesthetic-appealing and cost-

effective. The design of the flyover has

focused on adoption of local material

and avai lable equipment with

innovative techniques uncommon in

India.

It is expected that the various

innovative techniques adopted in this

project may form the basis for

construction of numerous flyover

/Bridge across India in the coming

years.

A combined team effort and close co-

ordination between Owner, Consultant

and Contractor at every step i. e

c o n c e p t i o n , d e s i g n a n d

i m p l e m e n t a t i o n w a s a m a i n

contributing factor for this success

story.

Photo 40: liner in Rs wall panel shutter

A TEDE Gateway Women event wasX

organized in NCPA, Mumbai on 29th May tohighlight achievements of women whohave attained great heights in their field.Over twelve dynamic women speakersfrom various walks of life shared theirglorious journey to success throughpresentation and speech.

Leila Seth

Leila Seth was the first woman to top the Barexaminations in London in 1957. She wasthe first woman judge of the Delhi HighCourt and the first woman to become chiefjustice of a state in India. She was appointedas a judge in 1978 and retired as ChiefJustice of Himachal Pradesh in 1992.

She was a member of the 15th LawCommission of India and co-authored thereport suggesting amendments to theHindu Succession Act giving equal rights todaughters in joint family property. She wasalso one of the three members of the 2012committee (known as the Justice VermaCommittee) which was constituted in theaftermath of the horrendous rape in Delhiof the young woman known as Nirbhaya.She is involved in pro bono work pertainingto health, human rights, women andchildren’s rights, education, environmentand ethics.

Upasana Makati

Upasana Makati is the Founder & Publisherof White Print – India’s first English lifestylemagazine for the visually impaired in Braille.Launched in May, 2013, she started WhitePrint to build a readership of enthusiasticindividuals who would look beyond therealms of mere news as reading material.She plans to make available the luxury ofreading well-researched and informativearticles along with leisure reads to thevisually impaired community. Upasana’sjourney so far has been bittersweet.

Sonam Kalra

SonamKalra has been trained in IndianClassical and Western music traditions andis equally adept at singing both genres.Sonam has learnt Indian Classical musicfrom Smt. ShubhaMudgal and Pt. SarathiChatterjee and has also studied Gospel andJazz with Ashley Clement in Singapore, aswell as classical opera under the notedtenor, HurChul Young. Sonam is known forher powerful yet sensitive voice and abilityto blend styles, yet stay true to the music.Sonam has also sung in venues aroundAsia,South Africa, Europe and NorthAmerica.

Natalie Di Luccio, Artist | Playback Singer |Soprano

Natalie Di Luccio is a classically trainedSoprano from Toronto, Canada. She hastoured with the Grammy & Oscar AwardWinning Composer. In India she sings inmany languages including Hindi, Tamil,Telegu, Gujarati, Punjabi& Marathi. Nataliehas done playback for Bollywood films likeLadies Vs Ricky Bahl, English Vinglish,Chennai Express & the Tamil film.Her aim isto constantly finding ways of bridging thegap between the east & west throughmusic.

Dr Ananda Shankar Jayant ClassicalDancer | Choreographer

Dr Ananda Shankar Jayant, is as one ofI n d i a’s l e a d i n g c l a s s i c a l d a n ce r s ,choreographers and dance scholars.Ananda was diagnosed with breast cancerin July 2008.She underwent surgery,chemotherapy, radiation and Herceptintherapies for 2 years. Through it all shecontinued to dance, teach, choreograph,travel and perform on tour. She is inremission now, and continues to be undermaintenance therapy and regularsurveillance.

Ananda has been decorated with twonational awards : “Padma Shri” in 2007 andthe Sangeet Natak Akademi Puraskar forBharatanatyam in 2009.She has also beenhonoured by the Govt. of Tamil Nadu withthe“Kalaimamani”, and with the“Kala Ratna”by the former Govt. of Andhra Pradesh.

Ananda holds a Masters degree in AncientIndian History, M.Phil in Art History and aPh.D in Tourism. She actively lectures onbreast cancer support and advocacy issues,having successfully battled the illness overthe last two years. A senior officer of theIndian Railway Traffic Service, Ananda iscurrently posted in Secunderabad.

Shwini Asokan, Co-founder, CEO at MadStreet Den & Mad Street Lab

Ashwini along with her husband Anand isbringing the power of Artificial Intelligenceto every mobile user. An artist at heart,Ashwini, armed with a Masters in Designfrom Carnegie Mellon University wasleading the mobile innovation team atIntel’s Interaction and Experience ResearchLab (IXR) in the USA. She spent 10 years inCalifornia working on how cutting edgetechnology can be useful to people.Ashwini quit her job at Intel only in May2014 to work full time with Mad Street Den.

TEDE Gateway WomenX

1. Introduction:

Population in India is growing at rapidrate which coupled with increasedtrend of migration to urban areas, hasescalated demand of residentialaccommodation in urban areas. Urbanland supply being limited, the need forhigh rise buildings is becoming moreand more relevant now than everbefore.

Mumbai, the commercial and financialcapital of India, has most of the high-rise buildings in India - land beingexpensive.

The construction of residentialskyscrapers in Mumbai started in the1970s, when Usha Kiran and MatruMandir were developed and stood atabout 250 feet, or 25 floors each but thiswas followed by a two-decade longsignificant lull until the mid-1990swhen construction boom began takingthe skyline upwards, with a majora c c e l e r a t i o n i n t h e p a c e o fdevelopment kick-starting in 2000,when the textile mill land was releasedin Lower Parel area for residentialconstruction.

More than 2500 high-rise buildings arealready constructed in MumbaiMetropolitan Region in addition tomore than a thousand mid-risesexisting already.

Mumbai is the city with the 12thhighest number of skyscrapers in theworld. Most of skyscrapers in Mumbaiare residential. Today, Mumbai isundergoing a massive constructionboom, with more than 15 Supertalls,hundreds of skyscrapers and thousandsof high-rises under construction.Currently Mumbai is perhaps the homet o l a r g e s t n u m b e r o f u n d e rconstruction supertalls and skyscrapersin the world.

2. Runwal Project - Scope ofWork:

Due to the overcrowding of populationand also the air pollution arising due totraffic, people want to live in a peacefulenvironment with proper facility.Citizens of Mumbai expect the bestliving standard and are accustomedto live in high rise structures. RunwalHomes Private Limited (RHPL) is one ofthe major developers in Mumbai andPune having excellent customersatisfaction record for constructingresidential towers and malls in the city.RHPL has planned to construct 8 highrise residential towers comprising of1574 nos. flats in their 14 acre landlocated at premier location in Mulund-Goregaon Link Road @ Mulund (W),Mumbai. The proposed amenities inthese towers for their valued customerinclude:

� L a r g e s t g a r d e n w i t h w o o dlandscaping.

� Club house with swimming pool

� High speed elevators

� Rain water harvesting

� SewageTreatment Plant (STP)

� Shopping complexes

� Large podium with ample carparking.

Gammon has been entrusted toconstruct four towers out of eighttowers. The scope of work includesconstruction of all civil works likefoundations, basements, podium and36 habitable floors of 11 ft. ceilingheight including block work andplastering inside and outside of thestructure.

For the construction of high risebuilding, there are some requirementsthat should be fulfilled. Safety andhealth aspects are the most importantrequirement of the high rise building.

3. Execution of High rise towers:

3.1 Site Mobilization:

Immediately on receipt of the WorkOrder in mid of 2010, inspite beingmonsoon, Gammon swung in to actionand started mobilization of various

resources including manpower, plantand equipment etc.

The excavation works of tower weretaken up in advance by developer andGammon put the resources directly forcasting of PCC and raft foundation. Fullyautomatic 30m3 capacity batchingplant was erected at site on fast trackbasis.

3.2 Shuttering Methodology:

Each floor consists of about 60 nos.(approx.) odd size columns, shear walls,double staircase, lift core walls, beamsand slab.

Since the columns, shear walls, core lifts& beams were having different sizes anddepths in each towers, Doka framingcould not be effectively designed tosuite such varying dimensions of allstructural members and henceGammon mobilized Doka panels onlyfor columns and shear walls anddecided to go for conventionalshuttering for deck slab by using cuplocks, acrow spans & ply woodthroughout the building.

3.3 Slab Cycle:

Each floor slab divided in four parts andconcreting was done in four pours.While work was in full swing weachieved 2 slabs (8 pour) per month ineach tower i.e. 15 day cycle. Later ondue to stoppage of work and otherhindrances due to variety of reasons,the speed was reduced to 1.5 slabs permonth.

3.4 ReinforcementWork:

Mechanical couplers were used forhigher diameter of reinforcement barsin columns instead of regular lappingmethod of reinforcement. Mechanicalc o u p l e r r e d u c e s w a s t a g e o freinforcement by 25% in columns andcan be used very effectively for higherdiameter from 16 to 32mm bars.

3.5Tower Crane & Concreting:

Telescopic tower crane was erected inone of the lift well and most of thecolumns & shear walls concreting wasdone by tower crane bucket and slabhas been done by concrete pump.

CONSTRUCTION OF HIGH RISE RESIDENTIAL TOWERS

R. RaghavanGen. Manager (Projects)

3.6 Block work:

When the floor reached at Level 6 theblock work was started for the habitablefloors. 150mm thick solid blocks forpartition and 200mm thick solid blocksfor outer periphery walls of the towerwere used.

3.7 Internal Plaster:

Plaster work of two types was used:

1. Cement face plaster in wet area likekitchen, toilet and common area for thethickness of 12mm to 15mm.

2. Gypsum vermiculate base in balancearea like living, bed, master bed roomand passage of thickness 12mm to15mm.

Table 1: General Details Of Project

Sr.No Description Unit Tower no.1Towerno.2

Towerno.3

Towerno.4

1 Total Built up area Sqft 297696 303933 367357 468442

2No. of flats in eachfloor

Nos. 6 6 6 6

3 Flat configuration Nos.2 BHK - 4nos

2 BHK - 4nos

2.5 BHK - 4nos

3 BHK - 4nos

Nos.2.5 BHK - 2nos

2.5 BHK - 2nos

3 BHK - 2nos

3.5 BHK - 2nos

4Total no of flats ineach Tower

Nos. 216 216 216 228

5Built up area perflat

Sqft2 BHK -1165 sqft

2 BHK -1165 sqft

2.5BHK -1475 sqft

3BHK -1960 sqft

Sqft2.5 BHK -1475 sqft

2.5 BHK -1475 sqft

3 BHK -1740 sqft

3.5 BHK -2160 sqft

6Basement +Podium + Stilt

Nos. 2 + 5 + 1 2 + 5 + 1 2 + 5 + 1 2 + 5 + 1

7 Residential floors Nos. 36 36 36 38

8 Fire check floors Nos. 1 1 1 2

Table 2: Tower wise QuantitiesSr.No Description Unit

Towerno.1

Towerno.2

Towerno.3

Towerno.4 Total

1Total Built uparea Sqft 297696 303933 367357 468442 1437428

2 Concrete Qty cum 16100 16100 18500 24865 75565

3ReinforcementSteel Qty MT 3175 3145 3540 4260 14120

4 Blockwork Qty SQM 23517 24010 29020 37005 113551

5

Internal CementPlastering &Gypsum SQM 78781 80432 97216 123967 380397

6ExternalPlastering SQM 42054 42935 51894 66174 203057

Table 4: Plant & Equipment Deployed

(1) Batching Plant 1 no.

(2) Tower Crane 4 nos.

(3) Builder Hoist 8 nos.

(4) Diesel Generators 5 nos.

(5) Passenger Elevator 4 nos.

Sr. No.Grade ofConcrete

Levels

A Columns & Shear Walls1 M40 Raft2 M65 First level to Sixth level3 M60 Seventh level to Tenth level4 M50 Eleven level to Twenty level5 M45 Twenty One level to Twenty Third level6 M40 Twenty Fourth level to Twenty Ninth level7 M35 Thirty level & aboveB Slabs & Beams1 M40 First slab to Nineteen slab2 M35 Twenty slab to Twenty Fourth slab3 M30 Twenty Fifth slab & above

Table 3: Grade of Concrete

3.8 External Plaster:

External plaster is carried out in threevertical stages considering height ofthe structure. Double coat of thickness25mm was used for external plaster. Forall dead walls plastering, suspendedplatform used and balance structure byusing‘H’frame scaffolding.

1st Stage - Up to L15 floor

2nd Stage -L15TO L27 floor

3rd Stage - L27TOTerrace floor

3.9 Progress Monitoring:

Progress was monitored on daily basis.Also weekly meeting held withdevelopers, clients, architect andstructural consultants to monitor theprogress and solution for anyhindrance in drawings and execution.

For Gammon this is the tallestresidential structure constructed so farthough tower under construction atNathani Heights in Mumbai is far tallerthan these towers. Out of four towers atRunwal three towers terrace has beencompleted.

4. Credits:

We take this opportunity to thank ouryoung and energetic team at site forexecution with full suppor t ofdedicated team of client engineers.

We also thank Mr. Subodh Runwal,Director of Runwal Homes Pvt. Limited(RHPL) and Mr. Samir Dhar, DirectorProjects for their support for projectsmonitoring and execution for oursuccess.

A team of CIVIL ENGINEERs went to a small village for road survey. Three/ Fourvillagers, out of curiosity, went to the team and one of them asked,“What are you doing here?”One of the CIVIL ENGINEERs replied,“A new pucca road is coming up in your villageso we have come here to do survey for this road.”Pointing to the instruments the villager asked further,“What are all these instruments?”The CIVIL ENGINEER replied,”This is an optical theodolite.That one is level.That oneisTotal Station.These instruments are required to give centerline of the road.”The villager said,” We in villages do give center lines though we do not have anysuch instruments.”The CIVIL ENGINEER asked,“How do you do that?”The villager replied, “Very Simple. We bring one DONKEY, put a gunny bag filledwith chuna and cut small hole in the bag. Then we hit the DONKEY with a stick. Thetrained DONKEY runs in a straight line, chuna falls from the hole of the gunny bagand we get the center line of the road.”The leader of the team asked.”Well, but what do you do, if a trained DONKEY is notavailable?”The old veteran villager replied,“Then we call CIVIL ENGINEER!!!”

SUBSTITUTE FOR CIVIL ENGINEERS !!!- M. U. Shah

GAMMON'S CONTRIBUTION IN KOLKATA METRO

Kolkata is only city in Indiawhere all mode of transportfrom Metro Rail to hand pulled

Rickshaw including Tram is available.Tram service started in 1873 with 200Trams carrying about 1.8 Lacspassengers on average week days.First Metro Line i. e. North – Southstarted in 1972 commission 1ststretch Esplanade to Bhowanipur inOctober 1984. There after it wasextended up to New Garia (KabiSubhash) to Dumdum of 2.77 km. Atpresent 4.4 Lacs passenger travell onaverage week days.

Gammon journey in metro wasstarted at Kolkata in Phase I (DumDum toTollygunje) in early 80’s whereG a m m o n e x e c u t e d 1 . 2 k mdiaphragm wall 600 mm width forSection 14A, 14B i. e. Jagu Babur Bazarto Asutosh College for constructingunderground Metro (Cut and Covermethod). Thereafter Gammon’s roleextended in Metro construction inthe city like Delhi, Bangalore&Chennai for viaduct construction,station building and undergroundMetro construction by Tunnel boringmachine found remarkable.

A. Metro line details

In order to strengthen Metro serviceat Kolkata, Phase II Metro line hasbeen planned& started under KolkataMetro Rail Corporation Limited(major part through JICA loan & restwith domestic fund) & Rail VikasNigam Limited (domestic fund).Gammon has contributed a lot inMetro construction in Phase II since2009 .

OWNER LINE KM

Metro Rail (Broad Gauge) North - South (Dum Dum - New Garia) 25

KMRCL (Standard Gauge) East - West (Howrah Maidan - Sector V) 14

Metro Rail / RVNL (Broad Gauge) Joka – BBD Bag 12

Metro Rail / RVNL (Broad Gauge) New Garia - Kabi Subhash 21

TOTAL 72 KM

B. Contract has been awarded under 4 packages for a value of Rs. 9380 Million

PACKAGE WORK VALUE OWNER ROUTE

EWE14.725 km Viaduct from Subhas Sarobar toSector - V

2125.3 Millions KMRCL East – West

JMS23 elevated Stations (Behala Bazar, Taratala &Majerhat)

1626.6 Millions

RVNL

Joka – BBD Bag

ANV2 5.27 km Viaduct from VIP Bazar to Nicco Park 2245.7 Millions.

New Garia –AirportANS2

7 elevated Stations (Barun Sengupta,Beliaghata, Gour Kishore Ghosh, Nicco Park,Sector V, Technopolis & Bidhan Nagar)

3389.6 Millions.

TOTAL 9387.2 Millions

C. Scope of work – Approximately 11 km viaduct with 10 station building constructionunder 4 packages.

PACKAGE ACTIVITY PILECONCRETEQUANTITY

STEELQUANTITY

EQUIPMENT

EWE14.725 km Viaduct from SubhasSarobar to Sector – V

35,000 RM 1,06,000 m³ 11,300Hydraulic Rotary

Pilling Rig,Batching Plant

Concrete Pump /Placer, Transit

Mixers, 250TcapCrane and

Mobile Craneetc.

JMS23 elevated Stations (BehalaBazar, Taratala & Majerhat)

11,000 RM 42,000 m³ 8,000

ANV25.27 km Viaduct from VIP Bazarto Nicco Park

60,000 RM 1,40,000 m³ 14,000

ANS2

7 elevated Stations (BarunSengupta, Beliaghata, GourKishore Ghosh, Nicco Park,Sector V, Technopolis & BidhanNagar)

44,000 RM 1,25,000 m³ 12,000

TOTAL 1,50,000 RM 4,13,000 m³ 45,300

D.Present & Futuristic Photographs

EWE1 ANV2

JMS2 ANS2

Amal BhattacharyaDy. Gen. Manager (Projects)

SERIOUSLY, LAUGHTER IS THE BEST MEDICINETenderness of Pre-tender Site Investigations !!! - M. U. Shah

In good olden days, the most commonlyused passenger vehicle at constructionsites was Mahindra Jeep of model MM DP540. While this model of Jeep was mostpopular in those days, at the same time itwas also notoriously famous for suddenbreak-downs at odd times without anynotice.

One Project Manager of a remotely locatedbridge job was asked by HO to carry outPre-tender Site Investigations for a nearbyprestigious Work-in –View (WIV) – a majorbridge job.

Such pre-tender site investigations ofmajor WIVs are usually carried out bydeputing staff of different levels inorganizational hierarchy from site and HO.

1) FRESH JUNIOR ENGINEER (CIVIL)

To start with PM sent one young freshJunior Engineer (Civil ) for preliminary siteinvestigations. While returning at night hisJeep broke down. Since the location wasvery remote, there was no possibility of anyHotel being available in the vicinity fornight stay. After extensive search for coupleof hours, JE could locate one farmer'splace who agreed to provide shelter for anight but said that they don't have extraroom and asked him whether he would liketo stay upstairs sharing the room with ababy or alternatively he can sleep in theshed of buffalo.

JE thought for a moment and opted for abuffalo shed thinking why to get wet withthe baby.

Next day at 7 O'clock in the morning, onesweet voice woke him up. He saw onegorgeous looking cute young girl in hersweet seventeen with a cup of tea in herhand wishing him“Good morning".

After pinching himself repeatedly andconfirming that he is not in his dreams,while continuing to rub his eyes, JE asked, "Who are you ?”

The girl replied, " I am the 'baby' of thefamily & further asked,“Who are you?”

JE replied,“ I am stupid fellow who opted tosleep in the shed of buffalo. !!!!"

(Even several years after this incidence, ifsomeone was to ask him which is the singlemost regretful choice he made in his life;with tears in his eyes, he would narrate thisincidence.)

2 ) F R E S H J U N I O R E N G I N E E R(MECHANICAL)

Then PM sent one fresh young MechanicalEngineer for site investigations. His Jeepalso broke down while returning at night.He landed up at one widow's place whoreadily agreed to provide shelter for thisyoung handsome Mech. Engineer.

Around midnight, the widow wakes him upto say that the door of her bedroom is openand that she could not lock the door as it'slatch requires repair.

Unable to understand the hint, rubbing hiseyes, Mech. Eng. gets up, goes to Jeep,brings tool box from Jeep, repairs the latch,goes to his room and started snoring !!!!

3 ) F R E S H J U N I O R E N G I N E E R(ELECTRICAL)

Then PM sent one fresh young ElectricalEngineer for site investigations. His Jeepalso broke down while returning at night.He landed up at one lone lady's place whoreadily agreed to provide shelter for thisy o u n g E l e c t r i c a l E n g i n e e r a n daccommodated him in Guest room.

Around midnight, the lady takes out fusefrom the main switch. There was totaldarkness all around. She waited for an hourfor something to happen but whennothing happened, she entered Guestroom with a pillow and blanket in her handand wakes up Electrical Engineer and said,“ It appears there is power break-down.There is total darkness all around. I amafraid of darkness….”

Unable to understand her statement or heraction, still clueless, Electrical Eng. ;rubbing his eyes, gets up, locates mainswitch board, replaces fuse, escorts thelady back to her room, switches on nightlamp for her, comes to Guest room andwent to deep sleep !!!!

4) SITE ACCOUNTANT

Then PM sent one young Site Accountantfor site investigations. His Jeep also brokedown while returning at night.

In search of a shelter for a night, he went toone place and requested for one night stay.The owner said, " I am sorry, I can'taccommodate you. We have youngdaughters in our house."

He got similar answers at next two places.

Frustrated, he thought he should now

search a house in this village where thereare no daughters.

In order to cut short conversation, at nextplace he asked the owner, "Are there anyyoung daughters in this house ?”

Owner asked, "Why ?”

The Accountant replied, " I want to sleephere for one night !!!!"

( For several months after this incidence,the Accountant could not walk nor hecould sign vouchers with his hand! )

5)VETERAN STOREKEEPER

Then PM sent veteran Storekeeper for siteinvestigations. His Jeep also broke down atnight while returning. He located a"suitable" accommodation for himself. Heliked this so much that he decided toextend his stay and to inform his wife hesent a cryptic telegram: " Busy buying. Willreturn home Friday " but packed offimmediately and rushed back home whenhe received a return telegram from his wifereading : " I leave it to you when to returnwhich you decide yourself but comebefore I start selling what you are buying!!!!"

(In good olden days there were no cadres ofPurchasers and Storekeepers were used tob u y m a t e r i a l s a l s o a p a r t f r o mstorekeeping.)

6)VETARAN Sr. CIVIL FOREMAN

Then PM sent one veteran Sr. Civil Foremanfor site investigations. His Jeep also brokedown while returning at night. He located aDoctor’s place who was on night duty.Doctor’s wife readily agreed to provideshelter for him. The Forman introducedhimself, made himself comfortable andexplained the importance of profession ofForemen, habits of Foremen etc. etc. to thelady.

Unexpectedly Doctor arrived from nightduty early. He saw an unknown person inhis bedroom. Furious, he reached out tohis drawer for pistol. Shocked by this hiswife yelled, “ Behave yourself ! Don’tbehave irrationally ! If everyone startsbehaving irrationally like you, very sooncountry will lose many Foremen !!!! Do youknow Foremen are real craftsmen and as itis their category is depleting very rapidly!!!!”

7) PROJECT MANAGER

T h e n P M h i m s e l f w e n t f o r s i t einvestigations. His Jeep also broke down atnight while returning. He located a placewhere lady's husband happened to be afrequent traveler Civil Engineer and was ontour on that day.

Around midnight, unexpectedly lady'shusband arrived from tour. He saw astrange person in his bedroom. Furious, hetook out his pistol, loaded it and pointed atPM but when he was about to pull trigger,his wife fell on her knees and pleaded, "Please, please ..; dear, don't kill him beforehe writes a Method Statement ..... !!!!!"

8) VETERAN AREA MANAGER FROMREGIONAL OFFICE

Then veteran Area Manager from RegionalOffice thought he should also carry out siteinvestigations - this being majorWIV Job.

Being senior citizen, he was alwaystravelling with his wife whom he marriedthirty years ago. He had met her at his firstposting at job site and could marry herafter a long courting period.Their Jeep alsobroke down at night while returning. Insearch of a shelter for a night they landedup in a place - the location of whichresembled to their first site where theyspent lot of time courting with each other.

After dinner, while sitting in verandah, hiswife going down memory lane, startedrecollecting those golden moments theyshared during those beautiful days of theircourtship.

She asked, "Do you remember - we wereused to sit in verandah like this and youwere used to hold my hand ?”

Area Manager said, " Yes, I do remember "and he reached over to her and held herhand.

Then she said, " Do you remember - youwere used to kiss me on my forehead?"

Area Manager, nodding affirmatively,leaned over and kissed her on herforehead.

Going further down memory lane she said," Do you remember - you were used to biteme on my neck ?

Area Manager again nodded affirmativelybut immediately got up.

She asked, " What happened? Where areyou going?"

Area Manager replied, " Just a moment,please. Let me bring my teeth lying ondining table !!!!”

9) GENERAL MANAGER (TENDERING)FROM HO

Then GM (Tendering) from HO thought ofgetting first hand feel of site beforepreparing the Tender. His Jeep also brokedown while returning at night. In search ofa shelter for a night, he landed up in a placewhere a lady was staying alone. She readilyagreed to give shelter. In absence of extrabed they had no option but to share thebed. He occupied right side of the bed.

After some time the lady started droppinghints after hints but in vain. So ultimatelyshe said, “ I am uncomfortable on left sideas I am used to sleep on right side. You rollover me, I roll under you and we tradesides.”

No response.

Impatient now, she reframed her proposal,“ Ok, listen. I roll over you, you roll under meand we trade sides.”

No response.

Loosing hopes, finally she said, “ I don’tthink you understand what I really want.”

Breaking his silence, GM said, “ I know. Iknow….. Let me tell you, when I was small,my brother was used to play this with me totake possession of full bed. I know that youwant me to get up so that you can occupyfull bed but be informed that I am notgoing to allow this to happen at any cost !!!You know I am matured now and no longera small child that I don’t understand yourhidden agenda and intentions !!!”

10) CONTRACTS MANAGER FROM HO

Then Contracts Manager from HO thoughthe should also conduct site investigationsas he would not like this prestigious job togo in the hands of competitors. His Jeepalso broke down while returning at night.In search of a shelter, he landed up in aplace where a lady was staying alone. Sheagreed to give shelter but said she has noextra room. Since it was almost midnightand difficult to search other place,Contracts Manager reluctantly decided tostay there but he became real lyuncomfortable when he saw that herroom was too small and neither there wassecond bed nor any place on floor to sleep.

But reconciling to this, he asked her , " Doyou have some extra pillows ?”

The lady started wondering about hispurpose of asking for extra pillows but shereplied, "Yes, I do have " and gave him threeextra pillows.

Contracts Manager placed these pillows onbed in a row and created a sort of partitionon bed bifurcating space for him on oneside and for the lady on the other side ofrow of pillows and slept in his portion ofbed.

In the morning, on the breakfast table, thelady asked; "What exactly you do ?”

Contracts Manager replied, " I am CivilEngineer, specialized in Bridges. In yourvillage new major bridge is coming up. Weare going to submit tender for this bridge. Iam here to do pre-tender reconnaissancesurvey and to decide strategy to completethis bridge in available contract period."

The lady said, " I don't think you can bridgethis river in available time. "

Furious the Contracts Manager said, " Whatdo you mean when you say I can't bridget h i s r i v e r ? D o y o u k n o w, I a minternationally renowned Bridge expertwith several Awards to my credit?”

The lady coolly replied, " May be.”

The Contracts Manager said, “ What maybe? It is a fact. I am respected all over thecountry and also internationally in civilengineering fraternity for my expertise inbridge engineering.”

She again said, “ May be but I am prettysure you can't even cross this river – what totalk of bridging it."

By now the Contracts Manager was boilingwith anger. Red faced he asked her, " Whatmakes you think so and that too with somuch conviction?"

The lady replied, " Whole night wasavailable to you but you could not crosseven three pillows and you expect me tobelieve that you will built a bridge forcrossing such mighty river? !!!”

11) DIRECTOR

Then Director thought he should alsoinvestigate site – this being vital job for theCompany. His Jeep also broke down in thenight while returning. In search of a shelterfor a night, he .......................................

PS : All the genericcharacters portrayed in thisH u m o u r a r t i c l e a r efictitious. Resemblance toany person- living or dead ispurely coincidental norfrequent break-down of Jeepreflects in anyway on themanufacturer of the Jeep noron performance of PlantDepartment who maintain itnor lack of “practical”knowledge among freshg r a d u a t e s r e f l e c t o ncountry’s education systemnor this is intended to labelsite staff or HO staff in anyparticular category.

WORKS IN PROGRESS

275m Chimney at Sagardighi, West Bengal

IDCT- Opal, Dahej, Gujarat

CLC at Bramhaputra Bridge, AssamWazirabad Flyover, New Delhi

Sagarkatte Bridge, Karnataka

Elevated Water Tank, Rajasthan

NEWS FLASH

1. Foundation Stone Laying

Hon’ble Minister for Road Transport andHighways Shri. Nitin Gadkariji laidFoundation Stone for 5km-long four-lane road from Varnapuri to Mormugaoharbor including the 3.2km-longflyover. Also present were, Hon’bleMinister of Defence, Shri. ManoharParrikar, Hon’ble Chief Minister of GoaShri. Laxmikant Parsekar, Hon’bleMinister of PWD, Goa Shri. SudinDhavalikar, and other CabinateMinisters of Goa.

While talking to media persons, Hon’bleP W D M i n i s t e r S h r i . D h a v l i k a rannounced that, this Rs. 550 croreproject has already been tendered.

2. CourtesyVisit

Mr. P. S. Raizada & Mr. Arvind Singh fromDelhi office, made a courtesy visit toHon’ble Minister for Law & Justice – Mr.Sadanand Gowda on his Birth Day.

3. Green Initiative at CMRL ProjectSite

Mr Veeraraghavan, working at ourCMRL Package is a committed soldierfor environment Protection. With an outof box thinking, he moved from pillar topost at CMRL Project site to collect 1200KG of waste paper and deposited it withITC (Paper and card Board Division)under the Gammon Banner. It was notan easy task but with positive and anenviable quality of patience in him, he

sustained his efforts to accomplish histask.

By this initiative he has preventedcutting of 30 trees. A Green InitiativeCertificate issued by the ITC will beartestimony of the Green approach of theCMRL Project as well as Gammon.

We place on record our appreciation toVeeraraghavan.

4. National Safety Day

Gammon Celebrated National SafetyDay on March 4; 2015. The theme for2015 was ‘Build a Safety Culture forSustainable Supply Chain’.

Various activities, games and eventswere organized across various sites andoffices for the celebrations andspreading awareness across all theworking partners.

5. Completion of Shell

Gammon’s Raigarh NDCT team hassuccessfully completed concreting of4th - 155 m tall Natural Draught Cooling

Tower Shell at Raigarh for Jindal PowerLimited on 31st March 2015. The shellwas completed in a record time of 5Months 25 days from Ring Beam level totop level with remarkable Quality,Safety & accuracy in Shell Profile.Battery of 4 Nos. 155 m tall ND coolingtowers has completely changed skylineof Raigarh.

6. RCD Rig at Signature Bridge

As an addition to the Gammon’sEquipment Bank, a RCD Rig (Make:BUMA Korea, Model: R1820, Torque:17.9 t-m) has been commissioned forspecialized Piling activity at P23Foundation of Signature Bridge, Delhi.

COMPANY NEWS

LECTURESDELIVERED

Dr. N.V. Nayak

January 23; 2015

“Redevelopment of Buildings”, at twoday Work shop cum Seminar at VJTI,Mumbai.

March 14; 2015

“Sustainability of Concrete”, duringone day seminar organized by ASCE ISWR on theme "VISION 2020- SMARTC I T I E S & S U S T A I N A B L EINFRASTRUCTURE".

Mr. Anupam Das

May9; 2015

“Well foundation Construction-Caisson foundation & Cutting edgeconstruction - new initiativesadopted at Bogibeel Bridge” at two-day National Seminar-cum-WorkshopatTezpur University

Mr. BhaveshThakkar

March 28-29, 2015

Participated in PMI- Asia PacificLeadership Institute Meeting held atBali, Indonesia.

GILPARTICIPATIONIN SEMINARS

Dr. N.V. Nayak

March 20; 2015

Participated in a Seminar at IIT, Mumbai.

M/s.V. S. Chako & Bibin Dhas

February 26, 2015,

Participated in workshop on IndustrialEngineering & Recent Industry Basedtechniques for Civil Engineerings t u d e n t s o r g a n i z e d b y R a j a sEngineering College, Tamilnadu anddelivered lectures on “Challenges &Opportunities for a Civil Engineer inIndustrial Engineering” & “Constructionand Process of aThermal Power plant.”

AWARDS

1. Mr. Umakant Kulkarni was conferredwith prestigious ‘Achiever Award’ byHon’ble Chief Minister of Bihar onbehalf of BSRDC for his contributiontowards implementation of AIIMS –Digha Elevated Corridor.

2. Mr. Anupam Das was conferred withPrestigious ‘Maharashtra PWD Medalfor the Best Paper on Construction’ byIndian Road Congress for his paper“Case Study on New Initiatives taken onCaisson Foundations and Cutting EdgeConstruction at Bogibeel Bridge”. Thepaper was printed in IRC Journal Vol.74-3 (October-December, 2013).

THANKS TOESTEEMED

CUSTOMERS

Channelization of Gomti river byDepartment of Irrigation & Water

Resources, Uttar PradeshRs. 516.73 crores

WELCOME TOGAMMON FAMILY

GENERAL MANAGER

Anand Vijayaraghavan

DEPUTY GENERAL MANAGER

J N Chandrasekhara

Devendra Verma

Somarao kulkarni

Tirumala Rao Tripuraneni

MANAGER

Chandra Bhushan Singh

C. P. Kumaravelu

Jayanta Saha

Mohammed ammarul Haque

DEPUTY MANAGER

Anil Kumar Annavarapu

Pankaj Kumar

Sunil Kumar Singh

Vivek Kumar Sharma

Srinivasulu Reddy

Parthapratim Tripath

Abhishek Jaiswal

Vishal Choubey

Korada Venkata Ramana

Anantha Kini

kinjal Chakraborty

Quamruddin

Prabhakaran Ramanathan

3. On the occasion of“World Safety andHealth Day” held on 7th April 2015,Ministry Of Labour and HumanResources, Royal Govt of Bhutanhonored Gammon’s PunatsangchhuHEP Project – I & II with “SafetyRecognition Certificate” for adoptingGood Occupational Health and SafetyPractices at workplace.

The certificate of award was given bySri. Dasho Pema Wangda, Hon’bleSecretary of Ministry of Labour andHuman Resources, Royal Govt. ofBhutan.

5. Corporate Safety Committee hasimmense pleasure in announcing theresult of the CMD Safety Shield for2013-14 as below:

1. Signature Bridge - Winner2. Jindal CivilWorks - 1st Runner up3. Nathani Heights - 2nd Runner up

Congratulations to Winner & Runnerups !

STAFF RECOGNITIONS

Mr. Nandkumar Ghawalkar, Asst.Manager – HO (SMS), participated andcompleted Nagtibba snow trekkingexpedition at Garhwal – Uttarakhandorganized by Society for Trekking &Environmental Preservation New Delhi.It was Six day trek of 35 participantsfrom various parts of country. The firstthree days involved rocky mountain ofHimachal Pradesh & last three daysinvolved trekking through Snow at thetemperature of - 60 C.

FAMILY RECOGNITIONSChi. Omkar Rajput, son of Mr. MeghrajRajput (HO–Purchase) has secured aSILVER MEDAL with his outstandingperformance in the National Jeet KuneDo championship tournament amidstcompetition from participants of thevarious states of India.

Jeet Kune Do is a very ancient gameplayed and developed in USA inspired

COMMITTEEREPRESENTATIONS

Secretary General of Indian RoadCongress has nominated followingG a m m o n i t e s i n r e c o n s t i t u t e dCommittee.

B-7 Committee

Mr. P. S. Raizada – ConvenorMr. M.V. Jatkar – Member SecretaryMr. Arvind Singh – MemberMr. ArvindTingloo – Member

BSS Committee

MrV N Heggade

B3 Committee

Dr. N. V. NayakMr. R. Prakash

BEREAVEMENT

Madam Katy N Popat, SeniorStenographer expired on March 3;2015 at the age of 71.

Madam Popat joined Gammon inJ a n u a r y 1 9 6 6 a n d r e c e n t l ycompleted her 48th year ofcontinues service. During her longtenure at HO, she worked in variousdepartments. She will always befondly remembered in Gammon byone and all.

MAY HER SOUL REST IN PEACE.

4. Gammon’s KOSI BRIDGE PROJECTwas conferred with Prestigious ‘CIDCVishwakarma Award – 2015’ under thecategory of Best Construction Projectby Construction Industry DevelopmentCouncil (CIDC).

by world famous karate fighter BruceLee.

Chi. Omkar had won 8 gold, 5 silver and1 bronze medal in his sporting career inthis game till now.

India’s first being constructed by Gammon across Yamuna river at Wazirabad,“Signature Bridge”promises to be a great tourist attraction of Delhi, the Capital of India. This cable-stayed bridge will

link NH-1 at Wazirabad on Western bank and at Khajuri Khas on eastern bank of the river Yamuna,

connecting North Delhi with East Delhi.

With a length of about 575 m (main bridge) +100 m extension and a height of 154 m, with glass

facade at top part, the proposed would have a bow-shaped steel pylon in theSignature Bridgemiddle. Two high towers will provide double cable support in the inner periphery of the carriageway.

The deck will be composite (steel and concrete) while the pylon will be in steel.

Equipped with four lanes, this engineering masterpiece will have a 1.2 m wide central verge, space

for anchoring cables, maintenance walkway and crash barrier on either side of the central verge.

Once operational the will dramatically improve access between North and WestSignature BridgeDelhi reducing present congestion and traffic jams and will become the identity of Capital City – the

way Taj Mahal is toAgra

“Signature Bridge”

Signature Bridge

Signature Bridge

- THE ACROSS YAMUNA RIVER AT DELHI