TRACTUELL Magazine No. 14, Edition 12/03

TRACTUELL

TRACTUELL 14/E32

TR

AC

TU

ELL for collection

TT Group of companies

The only

choice

for perf

ect

pipe installa

tion

Edition No. 14 • Dezember 2003

Newsletter from TRACTO-TECHNIK

Your GRUNDOMAT-Partner:

http://www.tracto-technik.de

Soil displacment

Under rail crossing withGRUNDOMAT assistedby pipe burstingon pages 4 - 6

New technique

trenchless installation ofhouse connections withGRUNDOPIT techniqueon pages 16 - 17

Pipe bursting

First sewer rehabilitaionproject with GRUNDO-BURST 800G in Chinaon pages 12 - 13

TT Technologies Inc.2020 East New York St.USA-Aurora, IL 60504Tel.: +1 630-851-8200Fax: +1 630-851-8299www.tttechnologies.comE-Mail: [email protected]

TT UK Ltd10 Windsor RoadGB-Bedford MK 42 9SUTel.: +44 1234.342.566Fax: +44 1234.352.184www.tt-uk.comE-Mail: [email protected]

TT Asia Pacific Pty Ltd31, Demand Avenue, Arundel, Goldcoast, Q 4214 Queensland, AustraliaTel.: +61 (0) 7 55 614 999Fax: +61 (0) 7 55 614 900www.tt-asiapacific.comE-Mail: [email protected]

Tracto-Technik GmbHHead officeP.O. Box 40 20D-57356 LennestadtTel.: (+49) 2723/8080Fax: (+49) 2723/808189E-Mail: [email protected]

Tracto-TechniquesSiège SocialAvenue Benoit FrachonZ. I. de BoulazacF-24750 PérigueuxTel.: +33 5.53.53.89.83Fax: +33 5.53.09.39.41www.tracto-techniques.comE-Mail: [email protected]

Nodig-Construction, the interna-tional trade platform for everybo-dy interested in trenchless pipe in-stallations and pipe-replacementsoffers loads of useful information:

nodig-construction.comonline information

• a range of used machines• latest Site stories• glossaryexplaining most of the terms con-cerning the trenchless industries

• techniquesregarding trenchless pipe installati-on and rehabilitation• events• link list• tendershere we plan on offering tendersfrom all over the world concerningtrenchless technology. At the mo-ment tenders from our partnersell2arabia can be viewed in ashort from. For details a subscripti-on with our partner is necessary.We are constantly seeking for newpartners offering international ten-ders• market newswe keep you informed with newsconcerning trenchless technology• newsletteryou can subscribe to our newsletterthat keeps you informed regularily • notice boardplatform to enable a dialogue a-mong suppliers, planners, users,contractors or other people inte-rested in the trenchless industry.

I N F O R M A T I O N

TRACTUELL 14/E 3TRACTUELL 14/E2

Contents

3 Soil displacement:Installation of a PVC sleeve pipe under a three-lane-highway

4 - 6 Soil displacement: and pipe bursting:Undercrossing of a railway line with Grundomat and Grundoburst

7 Pipe ramming:gas main installation utilizing pipe ramming and slick-boring

8 - 9 Pipe ramming:Contractor Coffey installs a Ø 900 mm steel pipe as part of urban redevelopment in Swansea/Wales

10 - 11 Pipe cracking:Contractor Arby carries out the perfect job in Michigan, USA

12 - 13 Pipe bursting: First large capacity pipe burster in China rehabilitates sewer pipein Bejing

14 - 15 Pipe bursting: Replacement of a concrete sewage pipe with GRUNDOBURST

16 - 17 HDD systems: Installation of two parallel pipes through boulder rock withGRUNDODRILL 20S

18 HDD systems: GRUNDODRILL 13X keeps emerald and heritage safe in Ireland

19 HDD systems: Four new techniques merging directional drilling and pipe ramming help contractors tackling difficult HDD projects

20 - 21 New technique: Three GRUNDOPIT models for the trenchless installation of house connections for gas, water, power and telecommunication

22 Information: New TT sales partner in Korea / Trenchless technology in India

23 Information: Get in touch with the TT products: Exhibitions and events 2004

S O I L D I S P L AC E M E N T

GRUNDOMATpulls its weight

Job:Installation of a PVC sleeve pipeØ 50 mm under a three-lane high-way (bore length 24 m), throughlimestone. Insertion of new resi-dential water service line Ø 25 mmin the 50 mm sleeve. No open cut!Customer:Residential homeowner Contractor:Clifford Collins & Son, Mt. Vernon, KY, USAEquipment:Grundomat-P 75 mmsupplied by TT Technologies

Short description:It was a residential line and the ho-meowner had been waiting for thenew service for years, but no onewould attempt the project because ofits level of difficulty. Any installationmethod would need to be trenchless.Because of the the extremely compactand dense limestone fill under theroad, Collins decided that a 50 mmPVC sleeve needed to be installedunder the road first and the actual25 mm water service line insertedinto the sleeve. Despite the toughconditions the tool made tremendousprogress. At the 20 m mark, however,they encountered some trouble. Thepiercing tool was put into reverse byturning the air hose a quarter turn.Slowly the tool began to back out ofthe bore-hole. After two hours, thetool had reversed itself and the PVCpipe out of the bore-hole. After ano-ther hour, the tool reached the exit piton the other side of the highway andthe PVC sleeve was in place. After re-moving the Grundomat from the airhose the new pipe was attached to itand pulled into place.

The water service installation project had been on the books for seven years beforeClifford Collins and Son, Mt Vernon, KY was able to accomplish the task with a Grundo-mat piercing tool.

In order to avoid damage to the 1-inch HDPE service line from the limestone fill, Collinsinstalled a 2-inch PVC sleeve first to protect the water line.

The highway could not be open cut, so atrenchless option was required.

© Copyright by:TRACTO-TECHNIK GmbHSpezialmaschinenD-57356 Lennestadt

Contents:Carola Schmidt

Setting and Layout:Anne Knour

Printed by:Druckerei Hachenburgon recycable paper

Circulation:10.000 copies

Impress

Dear Readers,

we apologize for having kept youwaiting for the latest edition ofthis newsletter, but we did so withreason.

As you will notice, we have alteredconcept and layout which meansmore practical application reportswith less text and more pictures toinclude maximum information in asingle issue.

To cut a long story short: from 2004the TRACTUELL newsletter willbe published twice a year to giveour sales partners adequate cover-age and to keep you updated onthe latest trenchless techniquesand products.

YoursTRACTUELL team

S O I L D I S P L AC E M E N T


Job:Under rail crossings, upsizingforthe trenchless installation of 12 PEØ 16 0 mm cable ducts

Project:Watford/Bletchley RemodellingPhase II

Customer: Railtrack

Contractor:Balfour Beatty Rail Projects Ltd.Subcontractor:B & W Tunnelling Limited

Project location:Little Heath Lane, Bourne End,Herts, UK

Equipment:GRUNDOMAT Ø 110 mm andGRUNDOBURST 400 G3 withQuicklock rod system,

Completion time:4 working days

Undercrossing of a railway line:Pipe bursting assists GRUNDOMAT

The working platform that was constructed for the 6 No. under rail crossings. Nospeed restrictions/limitationswere placed on the network whilst the works were carriedout. High speed trains were still travelling at 110 miles per hour.

The fourth GRUNDOMAT pilot borebeing carried out.

The 110mm GRUNDOMAT aligned in thestarting cradle in readiness to carry outthe first of 12 No. pilot bores beneath therailway embankment installing an 85 mmdiameter sacrificial liner.

Bore distance 32 metres.

At the request of Balfour Beatty on behalfof Railtrack, the accuracy of the GRUNDO-MAT was monitored using a receiver anddatasonde. NOTE: The vertical roundsteel bars that had been driven into theembankment to allow the engineers tomonitor any ground disturbance/move-ments throughout the whole of the works.No movement was recorded on any pilotbores, or even during the GRUNDO-BURST upsizing operation

The 110 mm GRUNDOMAT soil displacing hammer emerging onthe opposite embankment on the final bore.

After the 6 pilot bores had been completed, the level was once againchecked using a GRUNDOCONTROL – Level Measuring Unit

The upsizing operation was carried out utilizing a GRUNDOBURST 400 G3Quicklock rod system with a pulling capacity of 40 tonnes. The PE duct /sleeve that was installed on the upsizing operation was 160 mm in diameter.The butt fusing of the pipe was carried out on site. Each section was 12metres in length.

The pilot rod in the GRUNDOBURST400 G3 about to be pushed through the85 mm sacrificial sleeve, in readiness forthe upsizing operation.

The GRUNDOBURST 400 G3 in operation during the upsizing operation. This photo-graph was taken at the second site location.

The 4” cutting blade and 210 mm Ø ex-pander set up in readiness for the upsizingoperation to commence. NOTE: The 160 mm PE connected direct-ly to the expander, so that the bore holeis lined at all times.


continued from page - “Undercrossing of a railway line - Pipe bursting assists GRUNDOMAT”

Left: Highlights the 4” blade and 210 mm expander arriving at theworking platform following the upsizing operation.

NOTE: The Quicklock rods in the next 85 mm sacrificial liners inreadiness for the next upsizing operation.

Right: The six number 160 mm PE cableducts in position on the first site (viewfrom working platform). NOTE: the

pipes were installed at 500 mm centers

Left: The 6 No. 160 mm PE cable ducts installed at site No. 2, north of the bridge.Again, the pipes were installed at 500 mmcenters. The required accuracy was achie-ved.

P I P E R A M M I N G

Gas main installation utilizing Pipe ramming & Slick-boring

Step 1: During the slick-bore method, a pneumatic pipe rammer is used to install a borepipe under a rail line, road way or other structure.

Step 2: After the bore pipe is installed, the spoil is removed and the new product pipe isattached. A winch, track-hoe or excavator is then used to remove the bore pipe. As thebore pipe is removed, the new product pipe is pulled into place behind it.

Right: The GRUNDOMAT accuracy wasconsistent throughout the entire demon-

stration. This view being from the exitside, on site No. 1, south of the bridge.

Job:Installation of 3658 m of Ø 300 mmgas pipeline, several rail lines cross-ings. No directional drilling allowed.Customer:Nicor Gas, Aurora, Ill. Contractor:Arby Construction, New Berlin, Wis.Equipment:Grundoram Gigant Short description:The railroad was concerned aboutthe potential for voids under thetrack. The alternative constructionmethod that would not create the po-tential for slumps under the trackswas the slick-bore method. Duringthe slick-bore process the productpipe is welded to the back end of aninstalled bore pipe. A winch, track-hoe or excavator is used to pull thecasing out. As the bore pipe is remo-ved the product pipe is pulled intoplace. The bore pipe is installed witha pneumatic pipe rammer.The Arby crew successfully comple-ted all three of the slick-bores theyattempted for the project. The firstbore was approximately 36 m long.The subsequent bores were shorter,averaging 20 m each. The total timeper slick-bore ranged from 30 min. to1 hour to complete.Slick-boring and ramming are parti-cularly conducive to transmissionpipeline installation. On these typesof installations, crews usually haveenough room on either side of theroad or rail crossing to install goodsized sections of pipe. But even intighter working areas, they are stillable to ram in the bore pipe sectionby section and install the productpipe section by section.

TRACTUELL 14/E8

P I P E R A M M I N G

TRACTUELL 14/E 9

The Goliath Hammer ramming pipe number 3. This photograph reveals a subsoil whichcontained a mainly gravely clay content.

Swansea City & County Council iscurrently undertaking a large scaledrainage scheme as part of this in-vestment to service extensive areasof land in the Swansea Vale site.

The first part of this scheme was toplace a 600 mm Ø concrete stormwater pipe beneath spine road 6 ofthe Enterprise Park. The contractorCoffey Construction chosse theGrundoram Goliath to carry outthe job. The crossing at the Swan-sea Vale site was to be 52 metres inlength and called for the installa-tion of a 900 mm Ø steel pipethrough which will pass the 600 mmPE storm-water pipe.

A launch pit 24 m x 3 m x 6 m deepwas excavated and blinded withconcrete on the 4-12-02. Favourablesite conditions, allowed Coffey’s todo without sheet piles at the face ofthe embankment. A 20 m long steelI beam was set in place at the baseof the pit at a slope of 1:350 to sup-

Job:Installation of a 900 mm Ø steelpipe over 52 m length as host pipefor a 600 mm Ø PE storm-waterpipe. Customer:Swansea City & County Council Contractor:Coffey Construction, Ireland Equipment:Grundoram Goliath

Description:Swansea, the second largest city inWales, was named by the vikings.One landmark project, "SwanseaVale”, currently being jointly pro-moted by the Swansea Joint Ventu-re will act as a catalyst for futureregeneration in the area. SwanseaVale which is a new ‘green’ suburbin the north eastern sector of thecity and county, adjacent to theEnterprise park will provide a pre-stigious residential and commerci-al district and acts as a model forcity expansion in the UK.

‘Swansea Vale’ as a model for city expansion in the UK:

Steel pipe ramming as part ofurban redevelopment

port & guide the 900 mm Ø steelpipe throughout the installation.

With the first length of pipe(11.96 m in length) secured in thestart position a pushing cone & asoil removal adaptor was fittedonto the Goliath hammer. The firstpipe took just 4 hours to install de-spite strong clay conditions, ma-king an average progress of 3 mper hour. When the air supply wascoupled to the Goliath hammer thedrive started, gently at half volumeto begin, increasing to 0.75 volumeonce Coffey’s Engineers had esta-blished ground penetration of thepipe.

The first pipe took just 4 hours toinstall despite strong clay conditi-ons, making an average progress of3 m per hour. The C.C.L. boringcrew removed 1 m of spoil fromthis pipe after it was installed, &this soil removal was carried outafter every pipe was installed.

Overall view of the job taken from the end of the launch pit. As can be seen, C.C.L. usedtwo standard "600” compressors to give maximum force of impact to the Goliath ham-mer. Each compressor was fitted with a safety air cut-off valve & a lubricator was fittedto the exit air line from one of the compressors to ensure constant lubrication of theGoliath hammer.

A large block of tarmac removed from pipe. Some lumps of tarmac were 600 mm in dia-meter.

Pipe number 2 (12.59 m in length)was secured in place & aligned onday 2. The two pipes were weldedtogether using a full penetrationbutt weld. The progress of pipe 2was therefore 4.2 m/hr.

On day three, pipe no. 3 (12 m inlength) was driven across. Strongclay conditions or obstructionswere encountered 1/3 of the wayalong pipe 3. On day four the nextpipe (10.8 m in length) was drivenbeneath the road at a compressorforce of 0.75 volume. The drive ofthe first 8 m of the pipe was at2.5 m/hour.

On day five, pipe number 5 (4.8 min length) was aligned & welded.When there was 2.5 m of the pipesleft to drive it slowed to a halt dueto the build up of spoil & largeboulders behind the pushing cone.

Coffey’s decided at this stage to jetout the pipe even though it had notfully gone across beneath the road.The pipe was jetted with the mostpowerful jetting machine availableand the final 2.5 m of pipe wasthen rammed. After a final clea-ning of the pipe by Drain Brain, thecontract was complete. S.C.C.Cconfirmed that there had been nodisturbance to the road despite thereinforced pipe end cuttingthrough a number of large boul-ders en-route.

Large jets as used by Drain Brain Industrial.The jet on the extreme right is the one thatwas used in our contract. It has one jet facingforward & 10 jets facing in reverse.

The charsacter of Swansea is marked by theappealing contrast of old and new. The Norman castle, which was first mentio-ned in 1116 as being attacked by he Welsh,perfectly fits into the modern Swansea citycentre.

Large pieces of tarmac removed from thepipe. Some lumps of tarmac were 600 mm indiameter

Dynamic Pipe Bursting:

Perfect Job for Warren, Michigan


Job:Pipe bursting over 2000 m of a150 mm cast iron watermain andupsizing to 200 mm potable waterHDPE. In addition, over 377 m of300 mm cast iron needed to be burstand replaced with 300 mm HDPE.Customer:City of Warren, MichiganContractor:SOS Service, Brighton, MichiganEquipment:200 mm GRUNDOCRACK Herculeswith a 250 mm rear expander forthe150 mm mains,260 mm GRUNDOCRACK Gigantwith a 380 mm rear expander forthe 300 mm mains,10-ton Grundowinch.

Description:Like many cities throughout theUS, the city of Warren, Michiganhas experienced a range of pro-blems with an outdated and un-dersized water transmission sy-stem installed between 1930 and1950. The mains needed to be re-placed and upsized. The projectwould be the largest and the firstof its kind in the state of Michigan.Much of the bursting took placeunder heavily traveled areas inclu-ding the seven lane State Highway53, known as Van Dyke Avenueseing heavy daily traffic. Existingmains also ran under sidewalksand adjacent to commercial buil-dings. In these areas pipe burstingwould prove most valuable. In ad-dition to bursting, several smallareas were open cut, including theremoval and replacement of forty-one 8-inch diameter and two 12-inch diameter gate valves andwells. The vast majority of the pro-ject, however, was completedthrough pipe bursting.

If there was ever a perfect applica-tion for a particular job, pipe bur-sting was for the city of Warrenproject. The watermain that wasreplaced was surrounded by po-tential hazards. A 9-way Ameri-tech conduit bank containing fiberoptic cable ran parallel to thewatermain, just to the west, undera sidewalk. To the east, a large

The Grundocrack Hercules is loweredinto the launch pit. Bursting runs averagedthe length of one city block, appro-ximately 82 m.

Pipe bursting required only a small amount excavation. Disruption to the 100 or so business along Van Dyke Avenue was kept to a minimum.

The SOS Service crew used a Grundowinch with a 10-ton pulling capacity. The constanttension, variable speed winch played a key role in the success of the project.

The GRUNDOCRACK Gigant arrives inthe exit pit. Warren clay soils have beenknow to conduct stray electrical currents,contributing to the deterioration of theold cast iron mains.

600 mm diameter water transmissi-on line bordered the watermain.Moving the main further to thewest, under the sidewalk, wasruled out. Moving the main to theeast, directly under Van Dyke, wasalso ruled out several reasons. Thatleft two options: open cut and re-place or pipe bursting.

Pipe bursting’s low profile made itthe method of choice. Burstingwould not interfere with the Ame-ritech conduits or the 600 mmwater transmission main and workcould be confined to a single laneof traffic. The city would also see adramatic reduction in amount of,and costs associated with, pave-ment replacement versus an open

P I P E B U R S T I N G

cut application. Burst lengths ave-raged one city block, approxima-tely 82 m. Depending on repairsencountered, bursting times aver-aged 20 minutes to one hour. Boththe Hercules and Gigant burstingtools were able to overcome a mul-titude of point repairs, due in largepart to the guide head technology.

Although work progressed at arate comparable to open cut, dis-ruption to the 100 or so businesseswas minimal. Driveways werekept open, water users on VanDyke were only out of water for afew minutes while being transfer-red on or off the temporary bypassand many side streets were open totraffic during construction.

The Warren, Michigan pipe bur-sting project generated a tremen-dous amount of interest. It was thefirst watermain pipe bursting jobever in the state. During the finalstages of the job, the city invited re-presentatives from other cities andengineering firms to a demonstrati-on of the method.

Dynamic Pipe Bursting:

Perfect Job for Warren, Michigan

If there was ever a

perfect application for a

particular job, pipe

bursting was for the city

of Warren project.

GRUNDOBURST 800G


Job:Renewal of a 400 mm concretepipe, wall thickness 30 mm withPE pipe SDR Ø 450 mm over alength of 270 mCustomer:Beijing Municipal AdministrationContractor:Beijing Chuanganya TrenchlessTechnology & Engineering Co.Equipment:GRUNDOBURST 800 GDescription:Late 2002 The Beijing MunicipalAdministration contracted BeijingChuanganya Trenchless Technolo-gy and Engineering Co. Ltd. to co-ordinate the total reconstruction ofover 300 m of an existing concretesewer main, some 270 m of thiswas to be done by trenchless pipebursting.

The existing 400 mm concrete pipeof 30mm wall thickness was laidon a solid slump concrete base of700mm width and 150 mm thickn-ess at the invert with steel reinfor-ced concrete caps at each pipejoint, every two metres apart. The main ranged in depth from1.5 m to 3.5 m, and went throughno less than 10 manholes and had7 direction changes, the projectwas made further challenging bythe fact that the main ran througha narrow street between the BeijingUnion University and local resi-dential highrise units.

The Chuanganya Trenchless Tech-nology and Engineering company,researched pipe bursting equip-ment manufacturers in great detailworld wide, evaluating cost ofequipment, equipment specificati-ons, performance/history/job re-ports of equipment, technical sup-port and after sales service.

After completing a rigorous andcomprehensive study of the equip-ment available, and evaluating thesuppliers, the company chose theTT Group´s 80 tonnes pull backforce GRUNDOBURST 80 G.

Manhole No. 1

Manhole No. 2 Manhole No. 3

Manhole No. 4Manhole No. 5Manhole No. 6

Manhole No. 7

Manhole No. 8

Manhole No. 9 Manhole No. 10Manhole No. 11

L = 36.7 mL = 46.5 m

L = 38.3 m

L = 3.0 m

L = 70.7 mL = 36.7 m

L = 9.5 m

L = 43.0 m L = 34.0 m

L = 7.8 m

Sewer RehabilitationProject in Beijing

The 800 G stood out from the com-petition for many reasons, but themain virtues that made the decisi-on easier were• quality of the equipment ,• the patented interlocking Quick-

Lock Rods that enable quick andefficient operation,

• the ability of the machine to pullthe expander and new pipe intothe extended frame of the machine,

• the technical support and aftersales service.

The original sewer main was laidin 1982 and in recent years hasshown signs of serious gas corrosi-on and has required two major re-pairs in the 3 to 3.5 m depth sec-tions. It was decided that the capa-city of the main had to be maintai-ned or preferably improved, it wasthen decided that the new replace-ment would be a 450 mm SDR 21PE 80 Polyethelyne pipe.

In July, with field engineers fromTT Asia Pacific and Local TT Dis-tributor McAllen (Tianjin) on site,the project started, commencingfrom manhole one (1) through tomanhole ten (10) with the longestsection of 84 mm and an 8 degreebend at manhole two (2).

The project was completed wellwithin the capabilities of theGRUNDOBURST 800 G machine,proving itself to be an excellent in-vestment for the future for thecompany. Mr. Wang Guohui –Managing Director of The Beijing

Chuanganya Trenchless Technolo-gy and Engineering Co. Ltd. andhis General Manager Miss Bai Xia-ohong had chosen a very challen-ging project to train on the 800 Gand also introduce the first largecapacity hydraulic pipe burstingmachine into China.

They were most pleased with theperformance of the TTG equip-ment and the training and supportfrom TT Asia Pacific.




Job:A 375 mm diameter concrete pipewhich had been lined with a CIPPwas replaced by a MDPE pipe Ø450 mm SDR 17.6 over a total dis-tance of 140 m.Customer:Scottish WaterContractor:ABV East, EdinburghSite location:Longniddry, East Lothian,ScotlandEquipment:GRUNDOBURST 1000 G with450 mm diameter burster head and520 mm expander.Ground conditionsRock fill, the original pipe was laidin the late ‘60s.

The reason for carrying out the aboveworks using trenchless technology was tominimize any damage to the area which is a triple SI site (site of special scientific inte-rest). Also, caution had to be taken due tosalt marsh growing in the area.

Overall view of site from the launch/working pit - total bore distance 140 metres.

The launch pit face which was designed/constructed to withstand pulling forces ofup to 200 tonnes.

The 520 mm diameter expander with 450mm PE stub being butt fusedto the pipe string in readiness to be transported to the exit pit.

The guide rod having just arrived in theexit pit. It took approximately 1 hour and40 minutes to push the QuickLock rodsthrough the existing 375 mm Ø lined con-crete pipe to the exit pit.

Once the 520 mm expander and PE pipewere connected to the 350 mm diameterguide and 450 mm bursting head, the burs-ting operation commenced.

This photo clearly shows the expander beingdocked in the extension frame on the GRUN-DOBURST 1000 G following the successfulcompletion of the bursting operation.

One of AMEC site personnel removingthe CIPP which had become gathered a-round the newly installed 450 mm MDPESDR 17.6 pipe.

This photograph shows the expander and450 mm pipe about to be connected tothe guide cone and bursting head.Note the prevailing ground conditions.

Once the 520 mm diameter expanderhad been butt weldedto the pipe string, itwas then transportedto the exit pit by 2No. 360° excavators.

GRUNDOBURST 1000G replaces 375 mm

concrete pipe

TRACTUELL 14/E16 TRACTUELL 14/E 17

H D D S Y S T E M S

JobInstallation of two HD-PE pipesdiameter 355 mm SDR 17 throughlarge boulder rock beneath theDublin outer ring road over 55 mlength at depths of 2,50 to 3,50 m.

Contractor:Coffey ConstructionCustomer:South Dublin County CouncilProject:Dublin Outer Ring Road, N7 Naas Road, South Dublin

Equipment:GRUNDODRILL 20 SGRUNDOREAM backreamerDetection euipment:DCI Eclipse systen

Mixing systemMA 05 plus electric generatorDrilling fluid:80,000 litres (17528 gal) of Waterand 3.5 tonnes of Bentonite

Time:Pilot bore: 3.05 hours1st pre-ream with 350 mm: 2 hours2nd pre-ream with 509 mm: 3 hours Pipe pulling: 55 minutes.

GRUNDODRILL 20Scopes with parallel bore through boulder rock

The overall view ofthe job site with theGRUNDODRILL 20Sin the foreground.

The bore head being located using theDCI Eclipse system.

The bore has been completed - the bore head arrives in the exit pit.

The sonde housing, along with the bore head, being disconnectedfrom the drill string, the new low torque connector makes discon-nection much faster and easier.

The first of the two pipes arriving into the start pit along with the backreamer. The first installation has been successfully completed.

The GRUNDOREAM along with its exchan-geable blades arriving in the start pit. Thedummy set of rods can also be seen arrivingin the start pit, in readiness for the secondpre-reaming operation.

The first of two pre-reams is about to commence –the photo shows the GRUNDOREAM 350 mm backreamer, and behind it the dummy set of rods thatwill be pulled in the bore hole.

The 509 mm back reamer along with the355 mm SDR 17 PE pipe being pulled intothe bore. This installation of the pipe took55 minutes.

The GRUNDOREAM along with its exchan-geable blades arriving in the start pit.

Both pipe installations completed to the sa-tisfaction of Coffey Construction. The TTengineer is also happy that the installationshave been completed.

TRACTUELL 14/E 19

H D D S Y S T E M S

Some of the most spectacular trench-less projects have been accomplishedthrough the use of directional drilling.Drill operators and manufacturers arefinding new and creative ways of tack-ling tough projects and difficult situati-ons by utilizing pipe ramming techno-logy to assist directional drills. Recent-ly, several pipe ramming techniqueshave been introduced that are helpingdrill operators solve drilling problemsand tackle tough conditions. The tech-niques are changing the way drillersapproach projects and respond to pro-blems on the job.

A) Bore SalvageThe first technique is used to remove astuck product pipe are simple yet high-ly effective. During a bore salvage thepipe rammer is attached to the end ofthe partially installed product pipe.The pipe rammer needs to be attachedto the pipe so that it pulls the pipefrom the ground. This can be accom-plished through a fabricated sleeve. Awinch or some type of pulling device isused to assist the rammer during ope-ration. In many cases, the percussivepower of the pipe rammer is enough tofree the stuck pipe and allow it to beremoved from the ground.

B) Drill Stem Recovery The principal is the same during a drillstem recovery as it is during bore sal-vage, however, there are two possibletool configurations. Depending on thesituation, contractors can remove thedrill stem from the ground or, if thestem is still attached to the drill rig,push on the stem while the drill rigpulls back.

C) Pull Back AssistThe pullback assist technique worksdirectly on getting the product pipe in-stalled. Drilling underwater or in looseflowing soil conditions a conditionknown as hydrolock can occur. Hy-drolock occurs when the external pres-sure being put on the product pipefrom ground water pressure, drillingfluid pressure and/or soil conditionsexceeds the drill rig’s pullback capabi-lity or the product pipe’s tensilestrength. The percussive action of apipe rammer in this situation is used tohelp free the immobilized pipe. Thepullback assist technique has been suc-cessfully used on steel pipe, as well asHDPE. The technique can be used as asafety measure in anticipation of hy-drolock problems or after the pipe hasbecome immobilize.

Merging HDD and Pipe Ramming

D) Conductor Barrel™The Conductor Barrel process differsslightly from the other three methodsin the sense that it deals with the actualdrilling aspect of the project ratherthan pullback or recovery. The conceptbehind the Conductor Barrel is crea-ting a clear pathway through poor soilconditions so that drilling can begin inmore preferable soil conditions. Thesuccess of a drilling operation canoften be determined right at the start.If drilling does not begin in soil that isconducive to drilling, the success of theentire project can be put in jeopardy.Loose, unsupported soils are primecandidates for this method.

During the Conductor Barrel process,casings are rammed into the ground, ata predetermined angle, until desirablesoil conditions are met. The spoil is re-moved from the casing with an augeror core barrel. Drilling proceeds withinthe casing in the desirable soil conditi-ons. In addition to assisting drillingoperations at the start, the conductorcan also serve as a friction-free sectionduring pullback or prevent situationsin unstable soils acting in a similarfashion to containment cells.

Drilling contractors throughout NorthAmerica have successfully employedall four directional assist techniques.

Technique A: Bore salvage

Technique B. Drill stemrecovery

Technique C: Pull back assist

Technique D: Conductor barrel

A)

B)

C)

D)

TRACTUELL 14/E18

Job:Installation of a pumped sewerpipe ND 250 mm beneath the RiverLiffey in Kildare (as part of the Kil-cullen Sewage Improvement Sche-me) over 65 m lenght.Contractor:Murphy International Equipment:GRUNDODRILL 13 XGRUNDOREAM with 350 mm blades Detection equipment:The latest Eclipse system from DCIand a small boat.Short description:Throughout Europe Ireland justifi-ably maintains that special recogni-tion as the Emerald Isle. The job siteclose to Newbridge town centre was aleafy green glade, the River Liffey setbeneath a canopy of mature treeswinding its way through this sedate,fertile county on its way to the ever-increasing hustle and bustle of DublinCity. Wild flowers and wildlife inabundance could be seen along bothriver banks where many a fishermanhas idled in the hope of tempting justone of those game fish into his net.

The GRUNDODRILL 13 X systemwas placed in position on the NorthWest side of the river, ready to beginthe required 65 mtr long pilot bore.The ground at this point was gravelwith large cobbles, not the easiest ofground. Despite encountering veryhard ground conditions en-route thepilot bore was completed in justthree hours, dead on target and tothe required depth. The drill headwas removed and the GRUNDO-REAM attached to the drill string tostart the pre-ream. This would openthe 82 mm pilot bore up to around300mm using the 13 X’s refined Ben-tonite mixing system. The pre-reamcompleted, the same reamer wassetup again to be pulled backthrough the bore for final sizing andsimultaneous installation of the250 mm SDR II PE Pipe. Both thepre-ream and final installation wereachieved in 1.25 hours each giving atotal job time of just 5.5 hours.

The whole mature environment wasmaintained for all those who regu-larly visit this Emerald glade and thepipe installed most satisfactorilywith no disruption.

GRUNDODRILL 13X keeps emerald and heritage safe

Overall view of the job site – bore length 65 m. Background showing the exit area.

The new Grundoream back reamer used for the pre-reaming operation. The 80 mmpilot bore was increased to 350 mm in order to accept the 250 mm water main.

The 250 mm water main has been installed to the satisfaction of the client and contractor.


Trenchless installation of house connection lines with GRUNDOPIT

Fig. 4: Core hole drilling operation.

Fig. 5: Drilling above the bore head.

Fig. 7 and 8 (above and below): The wallinlet mounted to the pipe end is pulled in.

Fig. 6: Pulling in the pipe string.

For establishing simple houseconnections the non-steerableGrundomat soil displacementhammers are available for morethan 30 years. House connectionsup to 20 m in length are carriedout in a straight course from pointA to point B. Preferably, the ope-ration is started from a connectionpit to the target pit in front of thehouse wall. Pipes up to ND 150can be pulled in with the soil dis-placement hammer. The houseinlet can be driven with a corehole drill.

The steerable Grundosteer soildisplacement hammer (guidedmole) installs pipes up to OD 63 ina pilot bore, it is usually startedfrom a core hole bore in the cellarin direction of the connectiontrench / pit. The course of theGrundosteer can be monitoredand steered. It is capable of borelengths up to 60 m in difficult ter-rain profiles (house connectionswith gradients, beneath staircases,foundations), by-passing externallines. Grundosteer works withoutdrilling fluid.

Fig. 3: In the cellar: locating the bore headfrom the front of the cellar wall.

Fig. 1: Establishing a house connection with the steerable mini bore rig Grundopit P, coming from the connection pit straight into the supply space of the cellar.

Fig. 2: Establishing a house connection with the steerable mini bore rig Grundopit S, coming from the sewer manhole straight into the supply space of the cellar.

Start out of shafts of Ø 1 m starting withthe core hole driller.

Keeping an eye on the expenses,multiple house connections are ofgrowing importance in new deve-lopment areas. The installation ofgas, water, electricity and telecom-munication lines is co-ordinated bythe single suppliers, the lines are in-stalled in one and the same trenchand connected to the service area ofthe building via special buildinginlet. Due to different connectingpoints, usually this method cannotbe used for subsequent connectionof the site, for example to the gas ortelecommunication net, or for the re-newal of potable water lines.

Depending on pipe diameters, soilconditions, bore lengths and de-gree of difficulty, the application of

the horizontal fluid-assisted dril-ling unit Grundopit is required,available in 3 different capacitygrades (standard, power and pitversion). At first, a pilot bore is car-ried out, then the pipes up to ND150 are installed in lengths up to80 m, depending on the machinetype, coming from a connection pitor a sewer manhole right into thecellar (fig. 2).

The main reasons for applicationare subsequent gas and telecom-munication house connection linesin protection pipes up to OD 63.Fibre glass lines lying in sewerpipes can be installed from themanholes without pits, in conveni-ent cases even straight into the ser-

vice space of the building. Monito-ring and steerability also enableparallel installations and under-crossings beneath roads and smallinshore waters in an extremely pre-cise manner.

In most cases, however, the borehead coming from the supplyspace is located from the front ofthe cellar wall (fig. 3). After this, acore hole bore is performed abovethe bore head (figs. 4 and 5). Assoon as the drill tools have beenchanged, the pipe is pulled in (fig.6). Its end is equipped with a speci-al wall inlet (fig. 7), which seals thecellar wall from the outside andwithin.

If the machine is started from theshaft building, the shaft is alsobored through with a core holedrill, which can be connected di-rectly. Soils, which are difficult todrill (i.e. rocks) can be workedwith the hammer bore head drivenby compressed air. As a rule, ho-wever, the operation is performedwith a standard fluid-assisted borehead from a connection pit.

The Grundopit can be operated eit-her with a simple water-polymeror a Bentonite suspension, depen-

ding on the requirements. The sui-table mixing systems are availableat your choice.

Advantages of the Grundopitoperation technique:

• flexible application due to theoptimal adaptation to varyingworking conditions

• high installation precision, quali-ty and safety

• the additional hammer bore headallows propulsion in difficultsoils

• combination drive unit with hy-draulics and compressed air

• can be started from pits sizediameter 1 m

• add-on core hole drill• by using different mixing sy-

stems, the Grundodrill can beoperated with a simple water-po-lymer or a Bentonite suspension

• due to hydraulic removal of thebore cuttings, surface damage isavoided

• the wall inlet system is sealed ab-solutely tight

METHOD DESCRIPT ION


TTAP announce the appointmentof Shin-Kang Trading Companyasthe authorized Distributor/SalesPartner for TTG products in Korea

Shin-Kang Trading Company wasestablished in June 1990 in Seoul,Korea. The Company is owned andmanaged by President Mr. Chung-Jee Won, Manager Mr. Jun H. Wonand Administration Manager Ms.Ja-Young Won.

We commenced with Bentonite bu-siness for vertical drilling marketand have since expanded to coverthe construction, environmental,wastewater treatment, and trench-less market.

The first directional drilling wasintroduced into Korea when wealso began our successful entryinto the trenchless market. Custo-mer support is our focus and weare very active in this regards.

In order to give better technicalsupport to trenchless customers, atrenchless seminar was held inKorea on April 1999. All compa-nies and all attendants were satis-fied with the seminar and gainedvaluable knowledge and techni-ques for their field. With this kind

of continuous support and goodcustomer relationship, we havebeen very successful on trenchlessmarket and more than 90% ofHDD operators are customers ofour Company.

After spending 6 years in trench-less market, Shin-Kang were eagerto do business with TT and becomea member of the TT team. TT pro-ducts are well known and popularfor their superior quality of equip-ment and their service in Korea.

We welcome Shin-Kang TradingCompany as a member of the TTAsia Pacific team, but more impor-tantly as a member of the GlobalTTG family, and we look forwardto the expansion of the trenchlessequipment market in Korea.

TT Asia Pacific Ltd appoints sales partner for Korea


In October 2000, Research Deve-lopment & Manufacturing Corpo-ration (RDMC) whose main busin-ess is manufacturing automotivegearing components, saw the po-tential for Trenchless Technologyin the Bangalore region of India.Particularly in view of the massiveincreased demand to lay a comple-te fibre-optic cable networkthroughhout the entire Continent.

The successes of the newly purcha-sed GRUNDODRILL 10 S and theskill of the RDMC operators led toa further rig being purchased - aGRUNDODRILL 13 X family rig.RDMC have used this equipmentin varied soil conditions from hardsoil to clay type and have installedØ 40 x 12 and Ø 75 x 4 of HDPEpipe simultaneously in a single in-stallation.

RDMC also purchased a GRUN-DORAM Koloss ramming hammera 145 mm GRUNDOMAT soil dis-placing hammer. RDMC are ho-ping to increase the Trenchless

As custom has it...

side of the com-pany by adding aGRUNDODRILL20 S HDD rig inthe future.

Before workingany newly acqui-red equipment, a ceremonial ritualis carried out by blessing theequipment to ensure that no harmcomes to it. This proved to be thecase of the first 13 X drilling shotwhich can be seen as the drill headarrives safely in the exit trench.

Exhibitions & Events 20042004 is going to be a busy year for TT and its sales partners withnumerous international exhibitions and local customers events for.The lists ranges from the world’s largest construction fair BAUMA inMunich over the UCT in Housten, Texas to the popular Hands-onDays in Lennestadt. Take the opportunity to get in touch with the TTproducts and the latest developments in trenchless technologies.

Exhibitions

UCT 2004 Houston,Texas/USA, January 13 – 15, 2004

SMAGUA Zaragoza/Spain, February 17 – 20, 2004

Sep Polutin Padova/Italy, March 17 – 20, 2004

NO DIG 2004 New Orleans/USA, March 22 – 24, 2004

BAUMA 2004 Munich/Germany, March 29 – April 4, 2004

Gas Expo Shanghai Shanghai/China, March 31 – April 2, 2004

H2O Ferrara/Italy May 19 – 21, 2004Water National Show AWWA Orlando/USA June 13 – 17, 2004

Afriwater Johannesburg/SA August 13 – 15, 2004

NordCon 2003 Jöngköping/Sweden August 21 – 23, 2004

Matexpo Kortijk/Belgium September 3 – 7, 2004

Aimex Sydney/Australia September 9 – 12, 2004Water Sewerage & Waste Exeter/UK September 18, 2004

Réseaux Limoges/France September 17 - 19, 2004

Entsorga Cologne/Germany September 23 – 27, 2004

MT Expo Sao Paulo/Brasil September 16 – 20, 2004

RESEAUX 2004 Avignon/France September 22 - 24, 2004

Ville sans Tranchée Paris/France Sept. 30 – 2 Ocober 2004 6.Bregenzer Rohrleitungstage Bregenz/Austria Sept. 30 – Oct. 1, 2004

Trenchless Middle East Dubai, UAE October 12 – 14, 2004

Watertech & Agrifair Cyprus October 16 – 20, 2004

IWEX Birmingham, UK November 11 - 13, 2004

NoDig Hamburg/Germany November 15 – 17, 2004

EXPONET Cologne/Germany November 18 - 20, 2004

AERION 2004 Athens/Greece November 20 – 23, 2004

EventsFaGeBo 2004 &Excell award Olpe, Germany January 30, 2004

Hands-on Days 2004 Lennestadt, Germany September 13 - 19, 2004

For details on the exhibited equipment, stand numbers and more fairsand exhibitions check the TT website at www.tracto-technik.de.



Documents

TRACTUELL Magazine No. 14, Edition 12/03