VSL NEWSNUMBER ONE 1995

Editorial

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The VSL Group has been operating successfully in the South East Asian/Australasianregion for more than 25 years. We have established a skilful and creative network

of key marketing and technical staff, business partnerships and construction affiliations.

In all of our operating areas within OUI we have developed an enviable reputation formarketing, technical design achievement and construction performance. A team ofoutstanding local marketing and design engineers and construction achievers have per-formed all of their tasks with initiative, enthusiasm and overall effectiveness. Our clientshave been able to benefit from innovative design and construction solutions which con-centrate on optimizing overall project costs.

OUI has continued to thrive as a result of its long lasting local partnerships and clientaffiliations which have been nurtured with sound cultural awareness and understanding.Our valued clients are able to communicate face to face with skilled engineering per-sonnel of similar culture, in their own language. The local personnel of VSL are able totake decisions in a decentralized manner close to the scene of the action. Internationaltechnical and financial skills are readily available through well defined support structureslocated close within the operating unit.

OUI has been continually successful by focusing on its core specialized post-tensioningbusiness. The scope of our subcontract work is strategically enhanced to embracealternative design and construction methods and related complementary specialistwork.

In the French language «OUI» means «Yes». Within VSL's OUI the same positive andoptimistic approach is applied to solving the design and construction problems of ourvalued clients and to look forward to future progress.

In South East Asia / Australasia VSL is represented in each country by local companies.They are leading the different markets, thanks to their efficient presence and their qua-lity of organization. 1 am convinced that OUI is The Shining Example of the VSL Group.

Highlights of this Issue:

3 CS-PLUS in Hong Kong

8 Kuala LumpurLight Rail Transit System

9 Rambler Channel Bridge,Hong Kong

10 San Joaquin Corrido, USA

13 VSL Heavy Liftings' First inPoland

14 «Alpine Expresw» or Progresswith VSL in Saas-Fee

Front Cover:Second Stage Expressway Bangkok,Thailand. External post-tensioning and erectionby VSL of 9000 match cast segmentsfor 12 km of dual elevated expressway.

W ithin OUI, VSL continues to seek and identify specialist opportunities

which give increased scope of work forVSL and significant benefit and value toour clients. Design and constructionmethod innovation are supported byprofessional project management to en-sure that the challenging construction as-signments are completed in an economi-cal and timely manner. The organizationswithin OUI have been able to tailor theirdegree of specialization to reflect the con-struction needs of their country. Theblend between bridges, buildings, climb-form, heavy lifting, specialist engineering,ground anchoring and Retained Earthhave been skilfully refined. Exemplaryteam spirit within the operating unit hascontributed to the successful transfer oftechnical skills between the profit centresfor special projects.

been awarded thesub-contract for thesecond 52 storeytower. On the civilside, VSL are instal-ling the cable staysand post-tensio-ning for the uniqueSafti Bridge.

In Singapore, VSLhave just completed major post-ten-sioning and climb-form work for thefirst tower on thePontiac Marina (seephoto) project andhave subsequently

Operating Unit 1 -

Michel MaitreChairman of the Broad

The Shining Example of the VSL-Group

In Indonesia thebridge structuresare dramatic andchallenging. TheSudirman Flyover(see photo) con-structed in down-town Jakarta is thefirst example of theuse of the incre-mentally launchedmethod in Indo-nesia adopted inthis case to avoidany disruption tothe major trafficflow. The Barelangproject sees VSLconstructing fourmajor bridge struc-tures linking islands

within the vicinityof Batam Island,near Singapore.The projects in-clude cable stayed,balanced cantileverand precast seg-mental constructionmethods for themajor crossings.

In Australia the in-crementally laun-ched MaribyrnongBridge represents amajor civil achieve-ment. The Govern-or Philip Tower (seephoto) in Sydneyand the TuggerahShopping Centre,NSW, are twomassive examplesof VSL's Post-ten-

sioning involvementin high rise towersand expansive lowrise projects.

In Malaysia, VSL iscarrying out specia-list post-tensioningwork for the LRT(light rail) project(see photo) in KualaLumpur. We havealso been awardedthe complete super-structure contractfor the SecondCrossing Bridge lin-king Malaysia toSingapore.Foun-dation work is welladvanced and weexpect to be com-mencing on site inSeptember 1995.

In Thailand, VSLhas carried out the post-tensioningand erection of theNS4 and NS7 sec-tions of the Bang-kok Second StageExpressway.Theseelevated viaductstotal 12 kilometresin length. The suc-cess of this projectcarried out to an ex-tremely tight con-struction schedulehas resulted in theaward of additionalmajor elevated ex-pressway projects

in Thailand. TheFashion IslandShopping Centrein Bangkok (seephoto) representsone of the largenumber of majorcommercial buil-ding projects carriedout utilizing VSLdesign, post-ten-sioning and in manycases VSL Climb-form.

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Converting Research into Reality

CS-PLUS in Hong Kong

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There is no better example of the pro-cess , «converting research into reality».

than that which resulted in the first instal-lation of CS-PLUS in Hong Kong. Con-ventional prestressing enjoys widespreadacceptance and has been extensivelyused on civil projects, throughout HongKong for over 20 years. The CS-PLUSsystem is new to Hong Kong and its phy-sical introduction was the result of a com-bination of factors coming together atthe same time.

The industry in Hong Kong has close linkswith the United Kingdom and was wellaware of the question mark that had beenraised over corrosion protection of post-

The CS-PLUS configuration, used forapplications requiring enhanced corrosionprotection or improved fatigue resistance,combines the VSL Composite System(CS) stressing anchorage with the VSLPT-PLUS plastic duct system. The com-pact CS stressing anchorage is lighter,easier to install, requires smaller andshallower block-outs, and permits closeranchorage spacing in certain applications.The PT-PLUS offers a fully encapsulatedsystem with superb corrosion protection,and eliminates fretting fatigue between thestrand and duct.

An initial contact with VSL by a potentialclient resulted in immediate dispatch oftechnical literature on CS-PLUS. Sub-sequent contact revealed that the poten-tial client was committed to specifying asystem with enhanced corrosion protec-tion, furthermore they were interested inimproved fatigue resistance, more reliableand reduced friction and particularly thepotential for electrical isolation (up-gradeto CS-SUPER). Having made the initialcontact the opportunity for CS-PLUS wasquickly recognized and followed up. Fol-lowing establishment of a working rela-tionship the client was invited to view themanufacturing facility, and to discuss thesystem with VSL Technical Centre staff inSwitzerland.

The Environment

CS-PLUS Recognizing Opportunity

The local industry was similarly aware ofthe introduction in UK of the Concrete So-ciety Specification for Grouting publishedin CONCRETE July/August 1993.

Concerned owners in Hong Kong, awareof the situation in UK, were actively inve-stigating ways to improve the durability ofPost-tensioned structures through the useof new generation materials.

tensioning cables within the UK. This con-cern led ultimately to the temporary ban ofnew post-tensioned prestressed bridgesby the UK Department of Transport inSeptember 1992.

First Segment

Precast Yard

As part of the invitation a site visit to a pro-ject utilizing CS-PLUS, in the constructionstage, was arranged. The project wasbeing constructed for the Swiss FederalRailways who were kind enough to notonly facilitate the site visit but also to en-dorse the system and to offer to share theirexperience of the VSL product with thepotential client. Continuing with the followup service, budget pricing was provided,along with further presentations and dis-cussion, to demonstrate the , «Value forMoney»inherent in the system.

Endorsement

Although the clients initial interest was forfuture projects, they chose to amend 2 clauses of the specification for an exist-ing Project.The amendments, following theUK grouting code, called for sheaths to beof a «corrosion resistant durable material»and for the post-tensioning system to be«fully compatible».

Conversion to Reality

PT-PLUS 100

Construction Joint Base Slab

To comply with these revisions VSL pro-posed the CS-PLUS which was acceptedas variation in place of the conventionalanchorages and corrugated steel ducting.The final structure, a 1260 m long con-crete immersed tube consisting of 10 Nos.126 m precast, prestressed units will in-corporate 520 CS 5-31 anchorages and34,000 m of PT-PLUS ducting. The ducting will be joined by mirror weldingwith PT-PLUS couplers at constructionjoints only. When complete the tunnelwill carry a dual railway under VictoriaHarbor.

The process, «Converting Research intoReality» was facilitated; by the environ-ment, as a result of industry concerns overdurability; by availability of new technologyand recognizing the opportunity to use it;by follow up service, providing the clientwith information allowing them to reachtheir decision; by endorsement from areputable existing client and finally bydemonstrating value for money.

Andrew RoseVSL Hong Kong Ltd.Hong Kong

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South East Asia / Australasia

ACACIA Ridge Intermodal Terminal, Queensland

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The Acacia Ridge Intermodal Terminallocated in Brisbane, Queensland, has

now twice been a successful project forVSL. In 1980, VSL installed 8680 sq.mof post-tensioned slab on grade construc-tion and again lately with the installationof 29,000 sq.m of slab.

Post-tensioning also reduced the cons-truction time for the placement of thepavement to a 12 week period includingdelays due to weather. VSL carried outthe material supply, installation, stressingand grouting works for the 240 mm thickslab. Post-tensioning to the slab consistedof 5 x 15.2 mm tendons both transver-sely and longitudinally. The pavementwas designed for solid tyred forklifts witha 90 tonne axleloading.

pours a 1200 mm wide «sleeper beam»was installed with compression sealsplaced between the sleeper beam andpost-tensioned slab.

Working in conjunction with Coffey Part-ners International, VSL was able to pre-pare a post-tensioned alternative thatnot only re-designed the concrete slab,but also reduced the depth of subgradepreparation. The total design alternativeassisted Concrete Constructions (Queens-land) to win the project.

The total slab area consisted of 1.2 km ofpavement placed in eleven pours with thetypical pour length being 110 m long.Jointing of the slab was greatly reducedwhen compared to the conforming reinfo-rced concrete design. At the joint between

Barry StoryVSL Prestressing (Aust.) Pty. Ltd.Brisbane, Queensland

Post-Tensioning was the chosen solutionfor 1200 m of container pavement

Army Distribution warehouse-Bandiana, VictoriaYet Another 22,000 sq.m of Post-Tensioned on grade

J. KarabatsosVSL Prestressing (Aust.) Pty. Ltd.Noble Park, VIC

In addition to the 60,000 sq.m of slab on grade undertaken in 1994, VSL

Southern Division was awarded the post-tensioning design and construct contractfor this 22,000 sq.m of slab area.

The pavements were designed for rackingstorage, forklift loads (250 KN axle loads)and post loads.

The ability to dramatically reduce the number of construction joints and produ-ce a crack free surface whilst maintaininga thinner slab (150 mm and 175 mm thickslabs) combined with increased speed of construction were the major selling fea-tures for our client. The 112 tonne of 15.2 mm diameter strand with no passivereinforcement other than at joints and slabedges was installed in 9 weeks.

Melbourne Exhibition Centre

Anew Melbourne Exhibition Centre iscurrently under construction in the

capital of Victoria. The structure includesa 30,000 sq.m clear area exhibition hallsituated above a single basement carpark.

The floor slab will be 360 m x 84 m sup-ported on an 8.0 x 8.3 m structural grid,and is required to support up to 20 KPa liveload to provide significant user flexibility.

VSL was awarded the design and post-tensioning contract on a 2 way P.T. flatplate alternative slab design, 320 mmthick. All tendons are 5S5 (15.2 mm) slabsystem.

A feature of VSL's design is the integrationof cast-in floor service conduits andboxes, necessary for the hall's opera-tions. These boxes are required on a 3m by 3 m grid and are interconnected bycast-in conduits 110 mm diameter and60 mm diameter.

Delicate design, coordination and detailingwas required to balance the structuralrequirements of the heavy design live load,physical constraints from the boxes andconduits and practical considerations tosimplify tendon profiles without the needfor weaving of the tendons.

The resulting design achieved a highcapacity floor, simple in form, accommo-dating significant in-floor services in asafe and unobtrusive manner, which isproving economical to build!

F G. FilipponeVSL Prestressing (Aust.) Pty. Ltd.Noble Park, VIC

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Colo River Bridge, NSW

The Colo River Bridge located 25 kmnorth of Windsor, NSW is a 7 span

(5 x 28 m internal, 2 x 22 m end span)incrementally launched double tee beambridge.

The client/designer, the Roads and TrafficAuthority of NSW, decided on an incre-mentally launched solution primarily tominimize the environmental impact duringconstruction. The project was also identi

fied as an ideal model for project partne-ring - a project management procedureintended to promote superior co-opera-tion and communication between theclient, the main contractor (Barclay Mo-wlem) and subcontractors. VSL partici-pated fully in the partnership as our in-volvement was deemed to be integral withthe success of the project.

launching and installation of PostTensioning in the tee beams. VSL deve-loped a launching system using theircoarse thread CTA bars fixed to a bracketclamped to the bottom flange of thebridge. Bar jacks equipped with a conti-nuous nut winding mechanism were usedto launch. This method has the advan-tage over the traditional lift and pushmethod, of being able to be used for allsegments, except for the first and last segVSL's scope of work was the incremental

South East Asia / Australasia

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The project was completed in December1994 with launching completed 5 weeksahead of program.

The project partnering was considered byall parties a success and will be used onfuture projects.

Brad HannanVSL Prestressing (Aust.) Pty. Ltd.Thomleigh, NSW

Kuala Lumpur Light Rail Transit System 1 - Phase 1

Raymond SeahVSL Engineers (M) Sdn, Bhd.Kuala Lumpur, Malaysia

from 30 to 51 tonnes. Segments are ere-cted by balanced cantilever constructionusing overhead launching gantry weighingapproximately 180 tonnes. Both the pre-cast moulds and the launching gantry aredesigned to handle the horizontal curveof a maximum of 22 degrees. Duringerection, each segment is temporarilysupported by 2 to 4 numbers of 32 mmdiameter VSL CT stress bars before theyare permanently stressed by 5-12 ten-dons. The viaduct is currently being ere-cted on 24-hours basis as the project wasbehind schedule due to foundation pro-blems encountered by the main contrac-tor. VSL's best record so far was erecting12 segments in a 12-hour shift. The pro-ject is expected to be completed byAugust 1995.

Casting bed and existing timber bridgein background

The Kuala Lumpur LIRT System, themost talked about and prestigious

project in Kuala Lumpur is currently beingconstructed. This project plays a verysignificant role in helping to ease over con-gested traffic problems in Kuala Lumpur.

VSL's role in this project is to assist themain contractor, Taylor Woodrow Project

(M) in the design and supply of 6 numbersof match cast moulds for concrete seg-ments as well as the supply and installati-on of post-tensioning and epoxy jointingduring erection. LRT-System 1 - Phase 1consists of 2.5 km elevated viaduct.There are a total of 969 segments to beerected over 75 piers. Each segment is8.4 m wide by 2.7 m long and weighing

ments. The post-tensioning in the teebeams comprised 24 Nos. 12 strand12.7 mm strand tendons distributedthroughout the cross section, typicallycoupled at every 2nd segment.

VSL Korea takes the lead through teamwork

Pusan Harbor Elevated Expressway

Rambler Channel Bridge, Hong Kong

This 2.34 km long 4-1ane expressway ispart of a container transport bypass

road of Korea's largest harbor. A typical50m span comprises 15 precast boxsegments each 3.4 m long, and two1.68 m long diaphragm segments. Theyform twin 3 m deep single-cell box gir-ders with a 9.5m wide deck and 3.5 mwide soffit.

Construction began in February 1994 forcompletion in September 1996. VSL wasawarded a large part of the project inNovember 1993, including- Segment fabrication, transportation

and span-by-span erection- Post-Tensioning, rebar and concrete

placement for the 130 m free cantilever in-situ main span

- Supply and stressing of 1177 tonnes ofpost-tensioning

- Contractor consultancy.

JA LeeVSL Korea Co., Ltd.Seoul, Korea

Span-by-span erection using one overhead truss covering two box lines simultaneously

K H. LaiVSL Hong Kong Ltd.Hong Kong

The 1.2 km long Rambler Channel brid-ge will link Tsing Yi Island's Chung

Ching Tunnel with the Kwai Chung Viad-uct on the Kowloon mainland. Dual 3-laneexpressways are constructed by an over-head launching gantry, placing precastsegments using the balanced cantilevertechnique. Construction began in 1993and is due for completion by 1996.

VSL's scope of works involves supply,stressing and grouting of external andinternal prestressing. External tendons willbe installed, allowing full replaceabilitythroughout the bridge service life.

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USA

MARTA CIF 310 - Atlanta, Georgia

The latest extension to the North Line ofthe Metropolitan Atlanta Rapid Transit

Authority (MARTA) is due to be completedand in service in time for the 1996 SummerOlympic Games. A portion of this exten-sion consists of 1600 m of dual and paral-lel single track aerial structures. The ten-dered design for the aerial structuresconsists of 35 one and two span precastsegmental frames constructed by thespan by span method utilizing externalpost-tensioning tendons. A nearly identi-cal Cast-in-Place (CIP) on falseworkoption was also included in the bid docu-ments. The span lengths for the aerialstructures vary from 27.4 m to 42.7 maveraging 40 m.

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VSL offered an alternative design to thegeneral contractors which was based ontypically three-span continuous cas-tinplace frames utilizing internal P.T. tendon

in PT-PLUSTm duct. This alternativeimproved the construction speed for thiscast-in-place method while reducing theforming costs.

The project was bid in November 1993with the low bidder, Archer-Western Con-tractors, Ltd. selecting VSL's alternative.VSL's scope of work for this project in-cludes the engineering for the alternativeand the post-tensioning, (approximately375 tonnes). Once completed this projectwill be an integral part of the transporta-tion system for the City of Atlanta whenit hosts the Olympics in 1996.

Robert W. SwardVSL CorporationMiami, Florida

San Joaquin Corridor

The San Joaquin Hills project is locatedin Orange County just South of LosAngeles, California. It is a design/buildtoll road with a length of approximately24 Kilometers and includes 72 box girderbridges, many complex interchanges, andon/off ramps to the existing road system.It is the first privately funded highway pro-ject in California with recovery of financethrough a toll system. The general con-tractor is ,California Corridor Construc-tors., which is a joint venture betweenKiewit Pacific and Granite Construction,with Kiewit Beinq the lead partner.

VSL's scope of work is to supply andinstall post-tensioning (including workingdrawings) for the 72 box girder bridges.Typical tendon sizes on the post-tensio-ning are 5-19 and 5-31 and on many ofthe structures the tendons are over 200meters long. We are installing the strandusing our hydraulically driven wheel pus-hers designed and built in house by VSL.The longest structure on the project is353 meters in length.

In addition to the post-tensioning VSL hasa separate contract for the engineering

MGM Grand/Bally's Monorail

and supply of Retained Earth TM walls.The original quantities for this contractwere approximately 38,000 Sq.m.Through value engineering VSL hasconverted many of the Cast-in-placewalls to our Retained EarthTM systemsuch that the

total area now exceeds 58,000 sq.m. Thecontractor has been pleased with theAlec Bloem quality, speed of our design,and exe- VSL Corporation cution. Workon this project commenced San Jose,California in May 1994 and is scheduledfor completion in June 1996.

Alec BloemVSL CorporationSan Jose, California

The MGM Grand Hotel and Bally'sHotel in Las Vegas, Nevada, are soon

to be linked by a 11/2 kilometer longmonorail which is being provided by VSLCorporation.

The project was initiated in December1993 when the two hotels decided topurchase two, six car monorails from Dis-ney World in Orlando, Florida. VSL wasthen contracted to design and build theinfrastructure which consists of twin guide-ways, two stations and a maintenance fa-cility. VSL is also refurbishing the mo-norails, including brand new interiorsand exterior finishes.

The guideway structure is entirely precastand has some extremely challengingshapes for the beams with some combi-ning in plan curvature with super elevation.The beams are post-tensioned togetherinto continuous frames which typically in-clude four spans. The unique beam co-lumn connection combines structuralsteel, and prestressed concrete to takecare of the large transfer forces. The infra-structure has been designed to accom-modate the latest monorail system ofBombardier, Inc., the M6, in anticipationof the system being ultimately expandedto serve other casinos and to link withthe airport.

The on-site construction, including all theprecasting, has been accomplished infive months and the grand opening is setfor one month ahead of schedule in June1995.

Andrew PayneVSL CorporationRaleigh, North Carolina

Eastern Europe / Middle East

Contractor Capitalizes on VSL's Package Deal

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Increased cement consumption necessi-tated the expansion of the Rabigh

Cement Production Line 5 by the ArabiaCement Company Ltd. The project, situa-ted in the Western Province of SaudiArabia, was awarded to KHD HumboldWedag AG towards the middle of 1994.

A package proposal combining post-tensioning and slipforming for the sevensilos (2 Nos. clinker, 2 Nos. raw mealand 3 Nos. cement silos) was awardedto VSL by the civil works subcontractorArabian Hanil Development Co.

The post-tensioning utilizes the VSL monostrand system using S-6 anchorages.The total post-tensioning tonnage is in ex

cess of 140 tonnes and the total slipfor-med area is 41,000 sc.m.

The scope of the slipforming subcontractwas subsequently enlarged to include slip-forming for staircases, lift shafts and columns for an additional area of 8,000 sq.m.

VSL's work on site started in Septemberof 1994 and is due for completion inMay 1995.

A. Floreani, R. Mathys VSL(Switzerland) Ltd. Lyssach,Switzerland

Slipforming in progress on Cement Silo

Reeled monostrands being installed duringslipforming

Slipforming in progress on Clinker Silo

Bridge Repair Kresice, Czech Republic

VSL innovative heavy lifting enginee-ring was successful in connection

with repair works needed for a 5 spanfreeway bridge near Prague. In order totreat the bearings, the seats and the facesof the 5 x 9 = 45 nos. 30 m long girders itwas required to lift the individual spans,always two at a time, so that one wholesupport was accessible for repairs..

The original method was to build tempo-rary foundations, consisting of 2 support

towers at each bridge support, one oneach side. The lifting was planned to beaccomplished with individual small jacksunder all girders from underneath of thebridge. The manpower needed and thecoordination of the lifting was extensive.

330, one for each adjacent span. Twosupport structures wore needed persupport. There were totally four structu-res, with eight VSL lifting units, making itpossible to lift one span entirely and twoadjacent ones from one side. It required4 lifting points to lift a span totally.

The benefits to the contractor wereobvious. He had two support caps free towork on at one time, instead of one. Thepositions of the spans were changed

The VSL Heaving Lifting method simpli-fied all procedures in lifting the spans fromabove. A small steel support structure wasbuilt to rest on top of the bridge supportand it received two VSL lifting units SLU

within a very short time to make theaccess to the front of the girders easy.Several changes of locations weremade. This option did not exist with theoriginal method. Also, the preparationtime, the lifting and lowering times werevery short, and the precision of settingthe bridge into the mortar bed at thebearings was much higher. This methodis essential where no access fromunderneath exists and is much moreeconomical in any span manipulationduring bridqe repair.

Miroslav VejvodaVSL Systerny (CZ)Prague, Czech Republic

VSL Heavy Liftings' First in Poland

In May of last year, VSL had the opportu-nity to cooperate with main contractor

Avanti for the erection of a ship yard por-tal crane in the city of szczecin in WesternPoland.

Initially, the high, auxiliary A-frame at theleft was erected partly by crane, and sub-sequently by pulling it up to vertical po-

sition with VSL strand lifting equipment.This structure served for the up-endingand lifting of the shear leg. Thereafter, thepier leg (right) was erected, firstly bycrane and then by pulling with the strandequipment fixed to the top of the A-frame.

crabs, totaling 750 tonnes, was lifted to its permanent level, by means of 4 strandlifting units. For the main girder lift through70 m, a relatively calm day was chosen.

Once the legs were stabilized, the 108 mlong main box girder with the 2 crane

Lifting of the 750 tonne crane girder.

Ench MödschlerVSL (Switzerland) Ltd. Lyssach,Switzerland

Eastern Europe / Middle East

Alpine Express or Progress with VSL in Saas-Fee

The world-renowned, traffic-free holi-day resort Saas-Fee (1800 m) loca-

ted at the foot of Switzerland's highestmountain (Dom 4,545 m) continues tobuild on VSL, at present with their ultra-modern cable-car «Alpine Express»

In order to offer covered parking facilitiesto the rush of vehicles at the entrance ofthe «Pearl of the Alps» Saas-Fee a 9 floorcar park with 950 parking lots was cons-tructed in 1980 with VSL post-tensioning.

soil anchors: for the middle station (at2500 m) and the top station (at 3000 m),EIT technology for all anchors and ten-dons was exclusively used, whereby theprestressing tendons are external andalso replaceable.

Each EIT anchor and EIT prestressingtendon is equipped with an electrical loadBetween 1990 and 1992 a concrete arch

bridge with VSL P-T technology was builtconnecting the car park with the lowerstation of the Alpine Express. At thesame time the first section of this cablecar was constructed using 10 monitora-ble, adjustable and fully isolated rockanchors for the anchoring of the tensileforces of the suspension cable, as wellas another 87 monitorable rock anchorsrequired for the pylons of the cable carand the avalanche diversion dam.

The construction of the second section(1992-1994) of the Alpine Express tookadvantage of VSL's newly developedElectrically Isolated Tendon (EIT) rock and

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cell, indicating at any moment the isola-tion condition and anchor force. All in allsome 30 of these high-tech rockanchors were installed.

To complete the current developmentprogramme of the tourist resort Saas-Fee the construction of a 2nd parking of11 floors started some weeks ago,again with VSL.

Max CorpatauxVSL (Switzeland) Ltd.Penthaz, Switzeland

VSL Stay Cables used for the Bridging of the Allan River and the Rhone-Rhine Canal

78490 65490

10100

3960

00

1900

143980

Western Europe

VSL France was entrusted with the sup-ply and installation of the stay cables forthe Allan Bridge in the county of Doubs inthe eastern part of France. The 200 SSISystem (SSI = Single Strand Installation)with individually PE-sheathed, waxed andgalvanized O.W strands was adapted toallow some of the stays to be bifurcatedat the pylon end. Stay cables are between 29 m and 68 m long and con-

sist of between 18 and 36 strands. Thesolution with bifurcated stays allows thepylon to remain elegantly slender andaesthetical.

of the stays the deck is concreted, follo-wed by final stressing.

The steel superstructure of the two spans(78.5 m and 65.5 m) of the deck arepreassembled on each side, then pushedover the Allan River and the Rhone-RhineCanal, respectively. After partial stressing

Emmanuel Le ThyerryVSL France S.AEgly, France

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VSL

VSL

PUBLISHED BY VSL International Ltd., P.O. Box 7124, CH – 3001 Berne / Switzerland, Tel 41 - 31 - 66 42 22, Fax 41 - 31 66 42 50Editor: Therese Wenger

SOUTH EAST ASIA /AUSTRALIAAUSTRALIAVSL Prestressing (Aust.) Pty. Ltd.6 Pioneer AvenueThornleigh, NSW 2120Tel 61 - 2 - 484 59 44Fax 61 - 2 - 481 01 60

NORTH EAST ASIA

HONG KONGVSL North East AsiaRegional OfficeBank of America Tower, Suite 140712 Harcourt RoadCentral, Hong KongTel 852 - 537 93 90Fax 852 - 537 95 93

NORTH AMERICAU S ACorporate OfficeVSL Corporation1671 Dell AvenueCampbell, CA 95008Tel 1 - 408 - 866 67 77Fax 1 - 408 - 374 41 13

EASTERN EUROPE

SWITZERLANDVSL (Switzerland) Ltd.Bernstrasse 93421 LyssachTel 41 - 34 - 47 99 11Fax 41 - 34 - 45 43 22

WESTERN EUROPE

FRANCEVSL France S.à r.l.110 Avenue Verdun91526 EGLYTel 33 - 1 - 69 26 14 00Fax 33 - 1 - 60 83 89 95

LICENSEES

AUSTRIASonderbau GesmbH, WIENTel 43 - 222 - 892 02 80Fax 43 - 222 - 892 02 80 33

BOLIVIAPrestress VSL ofBolivia Jauregui Ltd., LA PAZTel. 591 - 2 - 321 874Fax 591 - 2 - 371 493

AUSTRALIAVSL Prestressing (Aust.) Pty. Ltd.VIRGINIA, QLDTel 61 - 7 - 265 64 00Fax 61 - 7 - 265 75 34

VSL Prestressing (Aust.) Pty. Ltd.NOBLE PARK, VICTel 61 - 3 - 795 03 66Fax 61 - 3 - 795 05 47

BRUNEI DARUSSALAMVSL Systems (B) Sdn. Bhd.BANDAR SERI BEGAWANTel 673 - 2 - 22 91 53, - 22 18 27Fax 673 - 2 - 22 19 54

HONG KONGVSL Engineers (HK) Ltd.WANCHAI / HONG KONGTel 852 - 520 16 00Fax 852 - 865 62 90

VSL Redland Concr. Prod. Ltd.WANCHAI, HONG KONGTel 852 - 598 72 28Fax 852 - 598 50 87

USAVSL Corporation NORCROSS, GATel 1 - 404 - 446 - 30 00Fax 1 - 404 - 242 74 93

VSL Corporation GRAND PRAIRIE, TXTel 1 - 214 - 647 - 02 00Fax 1 - 214 - 641 11 92

VSL Corporation LAKEWOOD, COTel 1 - 303 - 239 66 55Fax 1 - 303 - 239 66 23VSL Corporation EWA BEACH, HITel 1 - 808 - 682 28 11Fax 1 - 808 - 682 28 14

GREECEVSL Systems S.A., ATHENSTel 30 - 1 - 363 84 53Fax 30 - 1 - 360 95 43

SPAINVSL Iberica S.A., MADRIDTel 34 - 1 - 556 18 18Fax 34 - 1 - 597 27 01

BRAZILRudloff-VSL Industrial Ltda.SAO PAULOTel 55 - 11 - 826 04 55Fax 55 - 11 - 826 62 66

CHILESistemas Especiales deConstruccion SA, SANTIAGOTel 56 - 2 - 233 10 57Fax 56 - 2 - 231 12 05

GUAMVSL Prestressing (Guam), TUMONTel 67 - 1 - 646 80 61Fax 67 - 1 - 649 08 50

INDONESIAPT VSL Indonesia, JAKARTATel 62 - 21 - 570 07 86Fax 62 - 21 - 581 217

MALAYSIAVSL Engineers (M) Sdn. Bhd.KUALA LUMPURTel 60 - 3 - 242 47 11Fax 60 - 3 - 242 93 97

JAPANVSL Japan Corporation, TOKYOTel 81 - 33 - 346 89 13Fax 81 - 33 - 345 91 53

KOREAVSL Korea Co., Ltd., SEOULTel 82 - 2 - 574 - 82 00Fax 82 - 2 - 577 00 98

VSL CorporationHUNTINGTON BEACH, CATel 1 - 714 - 894 58 85Fax 1 - 714 - 894 88 96

VSL Corporation MIAMI, FLTel 1 - 305 - 592 50 75Fax 1 - 305 - 592 56 29

VSL Corporation EAGAN, MNTel 1 - 612 - 456 09 86Fax 1 - 612 - 456 92 81

VSL Corporation LANGHORNE, PATel 1 - 215 - 750 66 09Fax 1 - 215 - 757 03 81

VSL Corporation CAMPBELL, CATel 1- 1 - 408 - 866 50 00Fax 1 - 408 - 379 62 05

NORWAYVSL Norge A/S, STAVANGERTel 47 - 4 - 56 37 01Fax 47 - 4 - 56 27 21

PORTUGALVSL Prequipe SA, LISBOATel 351 - 1 - 793 85 30Fax 351 - 1 - 793 09 01

GREAT BRITAINBalvac Whitley Moran Ltd.LIVERPOOLTel 44 - 51 - 549 21 21Fax 44 - 51 - 549 14 36

INDIAKillick Prestressing Ltd., BOMBAYTel 91 - 22 - 578 44 81Fax 91 - 22 - 578 - 47 19

NETHERLANDSCivielco B.V., AT LEIDENTel 31 - 71 - 76 89 00Fax 31 - 71 - 72 08 86

NEW ZEALANDPrecision Precasting (Wgtn.) Ltd.OTAKITel 64 - 694 81 26Fax 64 - 694 83 44

SINGAPOREVSL Singapore Pte. Ltd., SINGAPORETel 65 - 235 70 77/9Fax 65 - 733 86 42

THAILANDVSL (Thailand) Co., Ltd., BANGKOKTel 66-2-237 32 88/89/90Fax 66-2-238 24 48

TAIWANVSL Systems (Taiwan) Ltd., TAIPEITel 886 - 2 - 707 72 53Fax 886 - 2 - 704 04 63

VSL Corporation LYNNWOOD, WATel 1 - 206 - 771 30 88Fax 1 - 206 - 672 30 20VSL Corporation SPRINGFIELD, VATel 1 - 703 - 451 43 00Fax 1 - 703 - 451 08 62

CANADACanadian BBR (1980) Inc.AGINCOURT, ONTTel 1 - 416 - 291 - 16 18Fax 1 - 416 - 291 99 60

VSL OFFICE PRAGUEVáclavské nám$e$sti110 00 PRAHA 1Tel 42 - 2- 2 - 236 69 92Fax 42 - 2 - 236 73 59

ITALYPRECO S.r.l., MILANOTel 39 - 2 - 481 80 31Fax 39 - 2 - 481 64 15

PERUPretensado VSL del Peru SA, LIMATel 51 - 14 - 76 - 04 23, -76 04 26Fax 51 - 14 - 76 04 77

SOUTH AFRICASteeledale Systems (Pty.) Ltd.JOHANNESBURGTel 27 - 11 - 613 77 41/9Fax 27 - 11 - 613 74 04

SWEDENInternordisk Spännarmering ABDANDERYDTel 46 - 8 - 753 02 50Fax 46 - 8 - 753 49 73

ADRESSES OF VSL COMPANIES AND LICENSEES