Application references Prestressing platforms

Silos Nuclear power stations

Bridges Gaz reservoirs

MC/805

productinformation

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M-293

11/881/4

1. BRIDGES ref. prod. inf.

Suez Bridges Contractor: ARAB CONTRACTORS (Egypt)Technical: FREYSSINET (Egypt)No. of platforms: 1Capacity of platform: 1.5 tWeight of jacks: 350 kgLifting points: 2 TIRFOR TU-16H, reeved with multiple sheave blocks

Viaduct on the Recht (Belgium) General Contractor: TRAVAUX S.A. (Belgium)Technical: Laboratoire de Cinématique (Subsidiary of Freyssinet)No. of platforms: 2Capacity of each platform: 2 tWeight of jacks: 350 kgLifting points: 2 TIRFOR TU-32H,reeved with multiple sheave blocks M-605

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MC/805

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M-293

11/882/4

2. SILOS ref. prod. inf.Alexandria Cement Works (Egypt) General Contractor: ARAB CONTRACTORS (Egypt)

Technical: FREYSSINETNo. of platforms: 4Capacity of each platform: 1.5 tWeight of jacks: 250 kgLifting points: 4 TIRFOR TU-16H

Hassioud Cement Works (Egypt) General Contractor: ARAB CONTRACTORS (Egypt)Technical: DYWIDAGNo. of platforms: 2Capacity of each platform: 2 tWeight of jacks. 500 kgLifting points: 4 TIRFOR TU-32HNo. of access platforms: 2, fitted with TIRAK hoists. M-263

Suez Cement Works (Egypt) General Contractor: ARAB CONTRACTORS (Egypt)Technical: DYWIDAGNo. of platforms: 2 tWeight of jacks: 500 kgLifting points: 4 TIRFOR TU-32HNo. of access platforms: 2, fitted with TIRAK hoists M-146

Fujeirah Cement Works (Egypt) General Contractor: VOEST (Austria)Civil Engineering Contractor: SIX CONSTRUCT (Belgium)Technical: DYWIDAGNo. of platforms: 4Capacity of each platform: 1.5 tWeight of jacks: 300 kgLifting points: 4 TIRFOR TU-16HNo. of access platforms: 4 (fitted with TIRAK hoists)

Barbados Cement Works General Contractor: SIX CONSTRUCT (Belgium)Technical: DYWIDAGNo. of platforms: 4Capacity of each platform: 1.5 tWeight of jacks: 300 kgLifting points: 4 TIRFOR TU-16HNo. of access platforms: 4 (fitted with TIRAK hoists)

Damman Cement Works General Contractor: HELDE and FRANKE (Germany)(Saudi Arabia) Technical: HELDE and FRANKE

No. of platforms: 8Capacity of each platform: 1.5 tWeight of jacks: 750 kgNo. of access platforms: 8 (fitted with TIRAK hoists)

Ain Touta Cement Works (Algeria) General Contractor: SMIDTH (Denmark)Civil Engineering Contractor: SIX CONSTRUCT (Belgium)Technical: V.S.L.No. of platforms: 4Capacity of each platform: 1300 kgWeight of jacks: 70 kgLifting points: 2 TIRAK T-1000 hoists,reeved with multiple sheave blocks

Ciment Français (Beaucaire, France) Contractor: REYDELTechnical: CIPECLifting points: 2 TIRAK T-1000 hoists

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MC/805

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M-293

11/883/4

3. GAS RESERVOIRS ref. prod. inf.Das Island (United Arab Emirates) General Contractor: Chicago Bridge and Iron (USA)

Civil Engineering Contractor: SPIE - BATIGNOLLESTechnical: FreyssinetNo. of platforms: 8Capacity of each platform: 5 tWeight of jacks: 2.5 tLifting points: 2 TIRFOR TU-32Hreeved with multiple sheave blocksNo. of access cradles: 8 (fitted with TIRAK hoists) M-262

Zeebrugge Port Terminal (Belgium) General Contractor: TRACTIONEL (Belgium)Civil Engineering Contractor: SBBM (Belgium)Technical Laboratoire de Cinématique (Subsidiary of Freyssinet)No. of platforms: 6Capacity of each platform: 3 tWeight of jacks: 750 kgLifting points: 4 TIRFOR TU-32H M-261

Pyeong Taek (South Korea) General Contractor: TECHNIGAZTechnical: FREYSSINETNo. of platforms: 6Capacity of each platform: 1 tWeight of jacks: 350 kgLifting points: 2 TIRAK T-1000 hoists,reeved with multiple sheave blocks

ENFERSA Factory, Contractor: AGROMAN, Empresa Constructora S.A.Cartegena / Spain Technical: FREYSSINET

No. of platforms: 3Capacity of each platform: 3 t.Lifting points: 9 TIRFOR TU-16H M-400

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MC/805

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M-293

11/884/4

4. NUCLEAR POWER STATIONS ref. prod. inf.Cattenom I and II (France) Contractor: DUMEZ - SPIE

Technical: GPN - VSLNo. of platforms: 2Capacity of each platform: 6 t.Weight of jacks: 2.5 tLifting points: 4 TIRFOR TU-32H

Thiange III (Belgium) Contractor: Laboratoire de Cinématique (Subsidiary of Freyssinet)Technical: FreyssinetNo. of platforms: 6Capacity of each platform: 5 tWeight of jacks: 1.6 tLifting points: 4 TIRFOR TU-32H M-237

Belleville (France) Contractor: GTMTechnical GPN - FreyssinetNo. of platforms: 2Capacity of each platform: 6 t.Weight of jacks: 2.5 tLifting points: 4 TIRFOR TU-32H

Other stations (USA) Contractor: EWING - BURKE (USA)Technical: PRESCON (Subsidiary of Freyssinet)

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MC1317

Application: Handling an overhead gantry.Site: New Baldwin motorway bridge,

Saybrook, Connecticut/USA.Customer: Joint-venture PERINI / PCL / C & G.Equipment: 2 hydraulic TIRAK T-3000 hoists.

Description:

The new 770 m Baldwin motorway bridge over the Connecticutriver at Saybrook and Old Lyne has been built using a newmethod of post-tensioned pre-cast segmental concrete.

The system used an overhead gantry to transport and positionthe prefabricated segmental concrete sections amongst theheaviest and widest ever used for balanced cantilever con-struction. The 2 hydraulic TIRAK T-3000 hoists were used forhandling the overhead gantry. These large 3 tonne capacityhoists operated in both directions for achieving the necessaryto-and-fro movements to position the segments.

The pulling effort was checked by 2 DYNAFOR load indicatorswith remote display mounted in the crane cabin.

The 2 post-tensioning platforms were lifted and lowered by 2x2TIRAK T-1000 machines reeved on 4 parts of wire rope (photoPA556.2).

Application completed by GRIPHOIST Inc., Westwood/USA

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productinformation

M-607

07/941/1

PA556.2

PA556.1 PA556

bridgeconstruction

MC1314

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M-605

07/941/1

bridgeconstruction

Application: Positioning and pre-stressing prefabricatedbridge sections.

Site: Viaduct over the river Recht, for theVerviers to Prüm motorway, Belgium.

General contractor: Travaux S.A.Prestressing technique: Laboratoire de Cinématique

(Freyssinet subsidiary company).Equipment: 2 special pre-stressing platforms, 2000

kg capacity, each fitted with 2 hydraulicTIRFOR TU-32H machines, mounted in amultiple sheave system, and 2 pre-stressing rams.

Description of application:

The platforms are freely suspended from and are able totraverse along the construction beam. They are used for:

a) Transporting the personnel and materials to the workingposition during the positioning and pre-stressing of theprefabricated bridge sections (weight: 54 tonnes).These are transported and positioned using the guyedconstruction beam; total length 94 m.

b) Positioning the pre-stressing rams (weight: 350 kg)using a chain hoist which traverses along a fixed jib onthe platform.

Application completed by SECALT S.A. Luxembourg

PA112.10

MC729

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M-262110/941/4

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Application: Prestressing work (Freyssinet system)on gazometers.

Site: Liquid Natural Gaz reservoir (LNG),Das Island, Abu-Dhabi

Customer: Freyssinet InternationalBoulogne-Billancourt/France

Building owner: Abu Dhabi National Oil CorporationEquipment:– 8 special double-deck prestressing platforms (11,40 m long,

cap. 5,400 kg) each equipped with: 2 hydraulic TIRFOR TU-32H machines, 1 two-way power pack, 4 safety devicesBLOCSTOP BS 35.30, 2 reeved suspension wire ropes 88 mlong, 4 safety wire ropes 44 m long, 4 manual chain hoists1,500 kg for handling the tensioning jacks, 1 access cradle(ALTA-Mono) with 1 TIRAK T-500, 1 safety device BLOCSTOPBS 15.301, 2 safety wire ropes 45 m long.

– 8 suspension brackets.

Description of application:The work is to prestress the safety cement walls which surroundthe metallic reservoirs. The eight double deck platforms enablethe installation of the prestressing ropes and the tensioningjacks on the eight rigs simultaneously.The installation of prestressing ropes takes place at the upperlevel whereas the tensioning takes place at the lower level ofthe platform.The platform move along the rigs. They are manoeuvred by tworeeved TIRFOR TU-32H and fitted with a suspension beams'system and with chain hoists for handling the tensioning jack(500 kg).

PA161.15

PA161.9

MC729

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M-262110/942/4

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drawing 811008B/03

SUSPENSIONBRACKET

safety wire rope

suspension wire rope

TWO-LEVELWORKING PLATFORM

second working level

first working level

TIRFOR TU-32H

TIRAK T-500

overload safety device

electric winder

ACCESS CRADLE

1850

3300

PA161.8

PA161.19

BLOCSTOP BS 35.30safety device

upper limit switch

BLOCSTOP BS 15.301safety device

The small cradle designed for3 people gives access tothe bigger platform towhich it is suspendedwhatever the workinglevel.It is manoeuvredwith 1 TIRAK T-500,speed 9 m/min.

MC729

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M-262110/943/4

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drawing 811008B/03

4700 TIRFOR

TU–32H

ladder

working platform4650 2000

11300

4650

hydraulic pack

access cradle

28900

28100

chain pulley block1500 daN

jackK500

first working level

second level access traps

second working level

MC729

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M-262110/944/4

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PA161..5 - Overhead travelling trolley PA161.4 - Hydraulic power pack

Tensioning jack K500 PA161.3 - Hydraulic TIRFOR TU-32H

chain pulley block1500 daN

tensioning jackK500

MC728

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M-261110/941/2

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Application: Presterssing work (Freyssinet system)on 3 liquid gas tanks

Site: Zeebrugge port/BelgiumCustomer: Laboratoire Cinématique, BruxellesEquipment: – 6 special prestressing platforms each fitted

with: 4 hydraulic TIRFOR TU-32H, 1 four waypower pack, 4 safety devices BLOCSTOP BS35.30, 1 electric trolley for the manoeuvring ofthe tensioning jack, 8 suspension and safetywire ropes, 40 m long.

– 6 suspension systems.

Description of application:Problem: The work consists in tensioning the prestressing wireropes on the inner part, cutting the extra length of the ropes andinjecting a protective cement to prevent corrosion.Each part is fitted with 3 ribs.Inner part: height 22.30 m, diam. 75.80 m.Outer part: height 14 m, diam. 85.80 m.Solution: The contractor has used the same platforms as forthe Nuclear Plant in Thiange (se M-237). They had beenpreviously mended and modified for this new application.The platforms are suspended to special suspension system.They move in tandem along the ribs.They have three functions:– lifting personnel and material up to the working position;– operating on the left and right of each rib for the placement

of the prestressing ropes and tensioning jacks;– handling the tensioning jacks (weight 750 kg) by means of an

electric trolley which moves along a mobile beam.A metallic frame construction is needed to support the beam,which is an integral part of the platform.

PA196.18

PA196.7 PA196.14

MC728

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M-261110/942/2

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PA196.9PA196.9

+ 22,32

+ 14,00

+ 8,00

0,00

– 7,00

120°120°

120°

Nervure 2Rib 2

Nervure 3Rib 3

10001000 40

00

R 41900R 36900

Nervure 1Rib 1

MC957

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M-400110/941/1

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Application: Prestressing work (Freyssinet system)on a gas reservoir.

Site: ENFERSA factory, Cartagena S.A./Spain.Contractor: AGROMAN, Empresa Constructora S.A.Equipment:– 3 x 10 m prestressing platforms, capacity 3000 kg, each

fitted with 3 hydraulic TIRFOR TU-16H machines, controlledfrom a power pack, 3 BLOCSTOP safety devices and 6 x 40m wire ropes.

– 9 stirrups suspended from trollies to allow movement of theplatforms.

– 3 hoists for manoeuvring the prestressing jacks.

Description of application:It was necessary to prestress the concrete safety ring whichcircled the metal reservoir. The 3 platforms allowed the work tocontinue simultaneously on the 3 seams for fitting and tensioningthe horizontal wire ropes. For work on the ledge, the platformshad to be slightly reversed using the trollies on the suspensionstirrups.

Application réalisée par TRACTEL IBERICA, Espagne.

PA309.3 PA309.1

PA309

MC730

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M-263110/941/2

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PA117.1 PA117.2

PA117.5

Application: Post tensioning work (DYWIDAG system)on concrete silos

Site: Hassioud Cement Plant, EgyptCustomer: The Arab Contractor Osman Ahmed Osman,

CairoEquipment: – 2 special prestressing platforms

each equipped with:4 hydraulic TIRFOR TU-32H,1 four-way power pack,4 BLOCSTOP safety devices2x4 safety and suspension wire ropes

– 4 suspension brackets

Description of application:In the present application the platforms have been designedfor prestressing work according to the conception of theGerman specialised Co. DYWIDAG.Only one mobile beam is used for handling the tensioning jackgiving access to the wire ropes, either on the right or left rig.This suspension beam is moved manually along two rails andis telescopic so that accurate positioning of the jack ispossible.The platforms are fixed to the suspension brackets which areanchored at the top of the silo.

MC730

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M-263110/942/2

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PA117.7

drawing 810101/B/01

TIRFORTU–32H

2805

3390

2390

12208000

28053390

B

B

16001200

2000

Coupe B – B

Blocstop

chain pulleyblock 500 kg

MC495

Application: Post tensioning of cement silos(Freyssinet system)

Site: Suez Cement Company, Suez/EgyptCustomer: The Arab Contractors Osman Ahmed Osman,

Cairo/EgyptEquipment: 4 special ALTA platforms, length 8 m, width 1.56

m,each fitted with:– 4 motorised TIRFOR TU-16H machines– 1 four-way power pack– 4 BLOCSTOP BS 20.301 safety devices– 8 wire ropes C12, 80 m long– 2 overhead trolleys

Description of application:Problem: The tensioning of the prestressing ropes of 5 silos (3for clinker material and 2 for homogenisation) to the new SUEZCEMENT COMPANY plant. The silos are 76 m high.After the tensioning, the extra lengths of the ropes have to becut, and to prevent corrosion, a protective cement is injected.Solution: The use of 4 supporting platforms equipped with 4motorised TIRFORs which move up and down 4 ribs outsidethe silo wall.These platforms have 2 functions:a) lifting personel and material up to the working level where

they can operate simultaneously on the left and on the rightof each rib for the placement of the prestressing ropes andtensioning jacks,

b) handling the tensioning jacks by means of 2 chain-blocks(250 kg capacity) which are suspended from a trolleyrunning on a I-beam.A metallic frame construction is needed to support theI-beam, which is an integral part of the platform.

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M-146110/941/1

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wire rope bundle

4 way hydraulicpower pack

suspension

1800

8000

800

Ø 17000

mobile beam

TIRFORTU–16H

BLOCSTOP

4 way hydraulic power pack

PA101.8

flooring

chain hoist250 kg

MC709

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M-237110/941/2

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PA107.14

PA107.21 PA107.18

Application: Pestressing work (Freyssinet conception)at a power station

Site: Tihange power station/BelgiumCustomer: Laboratoire de Cinématique, BrusselsEquipment: 6 special prestressing platforms

dim. 5x2 m, each equipped with:– 4 hydraulic TIRFOR TU-32H– 1 four-way power pack– 4 BLOCSTOP safety devices– 1 electric pulley block for handling the

tensioning jack.

Description of application:

Problem:The work consists of tensioning the prestressing wire ropes onthe inner part, cutting the extra length of the ropes and injectinga protective cement to prevent corrosion.

Solution:The platforms move two by two along the ribs. They have threefunctions:– lifting personnel and materials up to the working level– working on the left and on the right of each rib for the

positionning of the prestressing ropes and tensioning jacks,– handling of the tensioning jacks (weight 1600 kg) by means

of an electric pulley block which moves along a mobile beam(PA107.18). A metallic frame construction is needed tosupport the beam. It is an integral part of the platform.

The platforms come in from the top by means of a crane(PA107.16/19).

MC709

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M-237110/942/2

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PA107.19

PA107.16