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VOLUME 4 ISSUE 1

A case study detailing the use of floorsaws, core drills, wire saws, bursters, crunchers and Robolition™ equipment in a massive strengthening and upgrading process on the Kingston Bridge and associated ramps in Glasgow. - page 4

Features - November 2005

Concrete polishing project undertaken at Edinburgh International Airport

The following Case Studies illustrate the wide range of applications for which diamond cutting techniques can be used: - Kingston Bridge upgrade - page 4 - Concrete polishing - page 6 - Replacing M1 Motorway lighting column bases - page 8 - The versatility of diamond cutting techniques - page 11 - Modifications to fire training ship - page 12 - Chain saw opens up an old mill - page 13 - Wall cutting with diamond chain saw - page 15

Journal of the Drilling & Sawing Association


Contents

Secretary's message ................................................................................................

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Upgrading the Kingston Bridge ................................................................................

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Concrete Polishing ..................................................................................................

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Lighting the way ahead ...........................................................................................

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Versatility of diamond cutting and allied techniques ..................................................

11

MV Sir Henry Fire Training Ship modifications ...........................................................

12

Opening up an Old Mill ..........................................................................................

13

Hydraulic power on the move ..................................................................................

14

Chain saw solution .................................................................................................

15

Seeing is believing for diamond chain sawing ..........................................................

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The all new Partner K750 ........................................................................................

17

Practice what you preach - the Nimbus way ..............................................................

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New PRK System from ICS .......................................................................................

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Appointment at ICS .................................................................................................

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An in-site into Nimbus technology.............................................................................

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Presentation to Rex Robilliard....................................................................................

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Advertisers index......................................................................................................

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ASSOCIATION SERVICES

LECTURES ON DRILLING & SAWING

If you are a consulting engineer, contractor or public utility that requires more information on the benefits of specialist diamond cutting and allied techniques, we can organise a talk at your premises. The DSA can provide an informative session that may be of interest to both your staff and to clients. This presentation covers the following topics: - Illustrations of the various cutting techniques and their applications - The benefits of drilling and sawing techniques compared to more traditional methods - The benefits of using DSA Members - The importance of trained, competent operators with skill cards For further information on this service, contact Hugh Wylde on: Tel: 01773 820000 Fax: 01773 821284 E-mail: dsa@drillandsaw.org.uk THE DSA COMMITTEE The Committee currently consists of the following representatives from member companies :Peter White (Chairman) D-Drill (Master Drillers) Ltd 024 7661 2858 Owen Barrett Clyde Valley Drilling Ltd 01555 870800 Ross Baxter Hilti (Gt Britain) Ltd 07703 107 607 Finlay Crocker Corecut Ltd 01506 854710 Graham Fawcett Diacutt Concrete Drilling Services 020 8540 0300 Dave Jackson Drillmaster Ltd 0114 269 6565 Shayne Major Xcalibre Equipment Ltd 024 7644 4412 Dave Swanwick East Midlands Diamond Drilling 0115 967 9000 Ken Ward Diamond Drilling & Cutting Ltd 0191 428 5566 If you would like to discuss the activities of the Association, you are encouraged to call one of the above persons. In particular, if you feel that you have any suggestions for improving the services offered by the DSA, we welcome your ideas. 2


Secretary’s Message CONCRETE CUTTER Vol. 4, No.1 November 2005 Published by the Drilling & Sawing Association Editor: Hugh Wylde We welcome editorial contributions and encourage advertisements, but acceptance is at the discretion of the Committee of the Association. Please contact the DSA Office, Suite 5.O, North Mill, Bridge Foot, Belper, Derbyshire DE56 1YD Tel: 01773 820000 Fax: 01773 821284 for further information. If you require REPRINTS of any article, please contact the DSA Office above. Magazines, newspapers and private individuals are welcome to reproduce articles, in whole or in part, provided that acknowledgement is made to Concrete Cutter, no addition or other alteration is made to the text or illustrations of any article, and no reproduction is made where the copyright Š symbol appears. Opinions and views expressed in the Journal are not necessarily those of the Association or the Editor, who shall be under no liability in connection with any article published herein. Official Journal of the Drilling & Sawing Association

Visit our Website at: www.drillandsaw.org.uk E-mail dsa@drillandsaw.org.uk

As editor of the Concrete Cutter for the last few years, I continue to be amazed by the sheer variety of work undertaken by DSA Members on a day-to-day basis. Drilling or cutting concrete and other materials may seem a fairly straightforward operation, but this does not reflect the enormous range of different construction projects where diamond cutting techniques are used to solve awkward problems. In this latest issue we are looking at, on the one hand cutting doorways in the National Fire College Training Ship and, on the other hand, the reconstruction of the anchors and base plates for motorway lighting columns where accident damage has occurred. We publish on our website copies of most of the Case Studies published in Concrete Cutter since its inception. It is hoped that visitors to the site will recognise a current problem and how it has been solved in the past using diamond cutting and allied controlled demolition techniques. However anyone needing further technical information can always call one of our members who will advise them on the most suitable method of solving their problem. Details of all our members can also be found on our Website at www.drillandsaw.org.uk. However, the ability to tackle difficult jobs successfully depends also on the skills of the machine operators. In order to provide a future supply of trained operators, the DSA has recently been instrumental in setting up and running a specialist apprenticeship scheme in conjunction with the CITB. Currently there are 25 individuals taking part in the scheme who should end up as fully trained employees with an NVQ and CSCS Card in Drilling and Sawing. We are indebted to the members who have supported this initiative. Hugh Wylde

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Case Study

Upgrading the Kingston Bridge The Kingston Bridge in Glasgow has more than 180,000 vehicles crossing it each day and is Europe’s busiest motorway bridge. Since early 1992 Glasgow City Council has been engaged in a massive strengthening and upgrading program on the bridge and the associated access ramps. The total length of the ramp is 400m, made up of two straight sections and a central 150m curved and super-elevated section spanning the main motorway. This is all supported by 15 concrete columns. From inspections carried out on the ramp several problems were highlighted. These included the curved section having become tilted over so that the deck soffit was in direct contact with the column heads, no deck waterproofing and problems with the copings and parapets. The City Council eventually opted to cut away and replace the deck on the areas not over motorway, but to keep and strengthen the central curved continuous section, which spans the M8 motorway.

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Graham Construction won the contract and employed leading national diamond drilling and sawing contractor and DSA Member, Core Cut Ltd, as the concrete drilling and sawing and specialist demolition contractor for the project. Project Manager, Jim Armour from Graham

Construction, commented that “we needed a contractor who not only possessed all types of diamond equipment which would be required on this job but a company who we felt could deliver the excellent service we needed”


Case Study Firstly the box construction needed floorsaws to separate the cantilever section from the central box section. This involved over 1⁄2 kilometre of floorsawing at 300mm depth. In addition this type of cutting was used to remove the cantilever edge sections which involved 150 cuts of 2m long. Diamond drilling was used continuously on this project, for such applications as drilling holes in the cantilever sections for lifting; drilling of access holes for wire sawing; and drilling holes to allow hydraulic bursting to be carried out to the column tops below the curved continuous section. However one of the main methods of diamond cutting used was the technique of wiresawing. In particular the Hilti WS15 wire saw was involved in the 74 cuts through the box section of the main deck. This box section was 3m wide by 1m ������������������������������������ deep with a side wall thickness of up to 533mm.

After several wires were tested on site, the Hilti LC Wire specification was chosen as it almost doubled the lifetime of other wire specifications, but still managed to produce the same cutting

performance required to meet the critical project construction programme. In addition, it was found that the pneumatic wire tensioning system of the WS15 gave a much smoother cutting action which resulted in less wire breakages in comparison to conventional hydraulically operated machines. The experience and expertise of Core Cut was crucial in the design of the pulley arrangement which was required for removing the 9 column heads. This unique design allowed the equipment to be operated remotely from the ... continued on page 19

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Case Study

Concrete Polishing Two prestigious concrete polishing contracts have recently been successfully completed by Clyde Valley Drilling. The first project was in the entrance foyer of the stunning new Air Traffic Control Tower at Edinburgh International Airport for Laing O’Rourke and B.A.A.

When fully polished the slab provides a beautiful and practical hard wearing floor finish which perfectly suits this modern, functional building. The second project was for a private client in Edinburgh where the concrete floor is an integral part of the design for the kitchen and living area. After initial meetings to demonstrate the appearance and practicality of polished concrete, CVD were fully involved in the concrete design, method of placement and programming of the works. The concrete used was an ordinary prescribed mix using O.P.C. and natural riverbed aggregates.

Several test mixes were prepared and polished. The selected mix incorporated white cement, white sand and a cream limestone aggregate. CVD oversaw the concrete pour to ensure the workmanship and concrete consistency was 6


Case Study correct, as this is the key to achieving an excellent final appearance. The client was so pleased with the result that he decided to carry out the same process on the external patio and stairways. The finished kitchen floor and patio area integrate perfectly and impressively enhanced the overall project concept. The success of both these projects demonstrates the key role of CVD becoming involved early in the project. We bring together unique knowledge of concrete technology, methods of placement,

compaction and industry leading experience in concrete grinding and polishing. This expertise has been used on other recent contracts. These include the 2500m2 basement floor slab of the Kelvingrove Art Gallery and Museum in Glasgow, as well as a large fashion retail outlet in Manchester. For further information contact Charlie Armour at CVD on 01555 870800 or see our website at www.cvdltd.co.uk.

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Case Study

Lighting the way ahead On the M1 Motorway there have been several incidences of lighting column foundations being damaged as a result of road traffic accidents with the lighting column. Consequently the lighting column anchors were damaged and could not be reused. Carillion URS, the Managing Agent for the Highways Area, called upon the expertise of East Midlands Diamond Drilling (EMDD), who are DSA members, to find a solution to the problem.

It was proposed to replace the damaged anchors by installing a new set of anchors to secure a stainless steel plinth plate. The plinth plate would then contain holding down sockets to secure the replacement lighting columns.

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After consultation with Carillion URS, it was agreed that all repair work would be carried out by a single sub contractor. East Midlands Diamond Drilling were responsible for procuring all resin anchors, removal of the damaged lighting column base plates, hole coring, anchor installation, new base plate installation and grouting. When working on the motorway the working window was restricted to six hours per night. EMDD therefore had to develop a system of work that could achieve the remedial works on a column base within the allocated time period. The anchors installed had to achieve a uniaxial pull out load of 160 kN. M24 anchors were designed at a length of 1200mm. The anchors had to be 1200mm long to achieve an effective anchorage length underneath the damaged column base. The anchors were installed in a 32mm diameter hole. EMDD decided to diamond drill the holes due to the likelihood of encountering reinforcement within the column base and to minimise the operative’s exposure to HAVS (Hand Arm Vibration Syndrome). Opting to diamond drill the holes to a depth of 1200mm presented EMDD with a problem in itself. Although the column bases were constructed in concrete the area around the base was often found to be 100mm asphalt laid over road stone and loose fill material. Securing the drill rig to the asphalt surface around the base was not an option; EMDD designed two free standing drill rigs that achieved the drilling of the four 32mm diameter holes to a depth of 1200mm within 1.5 hours using Nimbus TW3 Core Drills and a Weka DK34 110 volt motor. To ensure the pull out loads would be achieved, EMDD used a 32mm diameter profile drill. When drilling anchor holes with conventional diamond core drilling equipment, the inside of the hole remains smooth which does not give a good adhesion for the grout. The profile drill creates a series of tapered wedges expanding the width of the hole in sections along its length.


Case Study

The project was successfully completed ahead of schedule with eleven new column bases installed in seven nights.

Carillion URS is responsible for the management, maintenance and improvement of the trunk roads and motorways within Area 8 one of the Highways Agency areas in England. Area 8 covers Northamptonshire, Bedfordshire, Hertfordshire, Buckinghamshire, Essex and Cambridgeshire. When Carillion identified that the existing lighting bolt fixings were inadequate on the A14/ M11 interchange, they employed the services of EMDD to replace the anchor bolts on seventy lighting columns. The diamond drilling and profile hole system was utilised to install 280 45mm diameter anchors to a depth of 500mm. EMDD once again provided a complete service supplying and installing the anchors and managing the testing of the anchors for pull out loads to 240kN. EMDD’s involvement in the lighting column projects has enhanced their knowledge of anchors and fixings. With Liebig Fixing approval and many HILTI anchor installation projects successfully completed, they have become one of the leading anchor installers within the industry.

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Head Office: Bulkington Road, Shilton, Coventry CV7 9QL 024 76612858 Facsimile: 024 76615425 T Telephone: E-mail: admin@d-drill.co.uk Website: www.d-drill.co.uk

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Case Study

The versatility of Diamond Cutting and Allied Techniques A number of recent jobs carried out by D-Drill (Master Drillers) Ltd who are DSA Members, illustrate the wide variety of construction projects that can be undertaken by specialist drilling and sawing contractors. A MONUMENT ON THE MOVE At a new Integrated Learning Centre at Lympestone Barracks, the South West Depot of D-Drill were requested by Bluestone plc to sever an existing 4.2 mtr x 4.2 mtr x 850 mm high monument from its base ready for crane removal. On top of the main plinth was a pyramid type formation. On top of the pyramid was a large boulder and on top of that was a statue of two marines. Obviously there was a concern in the make up of the statue. Nobody knew if the pyramid and soldiers were tied in to the base as no drawings were available. Also, once the monument was cut, would it withstand a crane lift? After several site visits, it was decided by D-Drill that a track saw would be applied and a 500 mm deep rebate formed on 2 sides to enable crane strops to be used. A wire saw would then be used to do the majority of the cutting. To investigate the make up of the plinth, 4 x 150 mm holes were drilled 4.2 mtrs deep through the centre. Once completed it appeared the plinth was made up of two concrete pours. This again caused concern. It was decided that due to the movement of the two pours, it would not be advisable to pull a wire through. The two uncut sides were therefore track sawn to 500 mm deep to form a rebate all around the plinth. These were then wedged with railway sleepers and the centre of the plinth was stitched drilled out leaving the cores in place for added support. This job also involved an environmental issue. No slurry created could be allowed to contaminate the ground around the monument. So puddle pumps and bowsers were put in place to avoid this problem. Approximately 2 weeks later the monument was cut and ready to be lifted. D-Drill attended

site in case of any problems. Once the crane was in position it took 70 tonnes of pressure to lift the monument from its base and thankfully it withstood the lift. It was re-located approximately 3 metres from where it first stood! The reason for this was that the new building behind the monument was not central to it.

The lift was successful and to the satisfaction of the client. FOOD FOR THOUGHT This project was recently undertaken by MBC Specialist Services Ltd – a D-Drill subsidiary company - at the Ambrosia food factory in the South West of England where the company needed to reduce a floor level to accept a new machine. In addition, a doorway into the room had to be enlarged. Because the specialist contractor would be working in a food area, they would be limited by a tight timescale and would have to recognise environmental requirements. continued on page 21 11


Case Study

MV Sir Henry Fire Training Ship at Moreton-in-Marsh The National Fire College trains firefighters in the UK. They have a specially built concrete building in which they set fires and train the fire fighters on how to extinguish fires and rescue people.

This building is a concrete structure designed to create a ships below deck environment with limited access via ladders and hatches, etc. and in total darkness. It is also surrounded by a 2m wide moat housing great crested newts. It was found necessary for additional safety reasons to create a full size external and internal escape door in order to be able to rescue any trainees getting into difficulty. Xcalibre Equipment and Philmore Contracting, two DSA members, worked together to both advise on suitable working methods and to achieve the required exits.

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Firstly, all the protected newts were removed and the moat drained. Subsequently an access ramp was built across the moat incorporating water retaining methods plus protection in the moat itself to contain any contamination. The door in the external wall of some 450mm thick was subsequently formed by drilling corners and using a Zoro 700mm tracked chain saw to make vertical cuts. Then a horizontal line was stitch drilled across the centre with 2 holes above for the entry of forks from a maniscopic to support and remove the sections after horizontal cuts. All expended water was controlled and stored and subsequently removed from site for environmentally safe disposal, leaving the site contamination free.

The internal reinforced concrete walls were 200mm thick. After installing emergency lighting, all electrical/hydraulic equipment had to be man handled into position via the newly created external doorway. Subsequently, removal of the upper level internal doorway was achieved by diamond drilling and ring sawing into manageable pieces. These were transported by an anchored overhead 110v hoist down to ground level and onto an LPG skip loader for safe removal and disposal. This work was successfully carried out using environmentally friendly services with no vibration risk to the operators.


Case Study

Opening up an Old Mill In the construction industry there is a constant striving for perfection within a limited time frame. Perfection can only be achieved by good experienced workman and the correct tool for the job. To this end, Drilltec Ltd have embraced the ICS Chain Saw technology in their daily work routine. Recently Drilltec have been using the versatile chain saw for many contracts where quality finishes are needed e.g. enlargement of window, doors and general openings. The ICS Chain Saw is capable of cutting up to 600mm thick through re-enforced concrete with ease, so 600mm thick brickwork on a recent refurbish contract in Central London was not a problem for this versatile tool. Another example of the chainsaw’s capability was in Bradford where a conversion of an old mill required door and window openings to be cut through 600mm stone and brickwork. Using the ICS Speed Hook accessory the saw cuts were able to be made as per specification to the site agent’s requirements.

The ICS Chain Saw, which is available from Drilltec Ltd, gave incredible results with a quality finish in a short time scale. Chain sawing gives the operative the capability of working in confined spaces but still having the capability of sawing materials up to 600mm thick. For more information on chain sawing or any other services please call Drilltec on 0800 7311 814. 13


Product News

Hydraulic power on the move Xcalibre introduces a revolutionary concept to the UK diamond cutting and demolition market – the K9-4. The K9-4 is a self-drive hydraulic multi tool carrier giving the facility to break, crush, burst, saw, drill and lift and shift and much more. Over 75 different attachments are available, which can be fitted in minutes using the quick hitch system. The operator stands on the back and easily drives it around the work site. Controlling the K9-4 is easy and the driving position means you can see exactly where you are positioned, almost to the millimetre. Powered by diesel engine, LPG or 3-phase electric motor and weighing in at less than 1 tonne, this powerful unit produces hydraulic flows of up to 47 litres per minute at 225 bar. At only 790mm wide it can fit through most door ways. Although new to the UK, the K9-4 has been used around the world for both carrying and powering Continued on next page

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Case Study

Chain Saw Solution It is difficult to see how the specialist contractor could have carried out a recent wall sawing contract so cost-effectively without using a diamond chain saw.

The diamond chain saw in action. The neat, narrow slot for the box lintel can be seen at the top of the opening

Faced with the problem of cutting four openings in a curved 350mm thick cavity wall, the contractor quickly selected an ICS 633GC petrol chain saw from Nimbus as the obvious answer. As the company representative pointed out, “Had we elected to use a wall saw the curved face would have presented severe track-mounting

problems and in any case over-cutting could not be tolerated. Stitch drilling would have meant similar problems and wire sawing could hardly be justified.” Forming part of the Wyke Regis Infant School near Portland, the curved wall comprised a 200mm thick outer skin in Portland Stone, an inner face of 100mm thick concrete blocks and a 50mm wide cavity between the two. Because of a change of use three 1200 x 60mm window openings were needed plus a 1200mm square opening for a hatchway. Using water coolant from a standard domestic supply, the 6.5 hp chain saw achieved a 1.2m long cut in around 10-15 minutes and provided 6.2 m2 of cutting without chain replacement. The contractor completed the whole job in three working days including breaking out. As their representative commented, “The chain saw enabled us to cut the narrow slot at the top of each opening to accept the lip of a box lintel and left a clean, neat opening with no making good required. Our customer, Bournemouth–based Westmade Ltd., were clearly impressed with the result and we have now been asked to quote for a further opening”

Continued from previous page

the whole range of hydraulic diamond drilling, wall sawing, wire sawing and chain sawing equipment. When used with a breaker, it provides the breaking power of much larger machines whilst at the same time further reducing any hand arm vibration exposure for the operator. 15


Product News

Seeing is believing for Diamond Chain Sawing Diamond chain technology for cutting concrete was pioneered and made viable by ICS in the mid 1990s. Many contractors who bought into the technology at the time found that it wasn’t the everyday, every application tool they had expected it to be and so, despite a compelling case in its favour, use of the system is not as widespread as many believe it deserves to be. Now ICS has teamed up with UK dealer Duradiamond in a campaign to show DSA Members the advantages of cutting concrete with diamond chain by offering a free ‘no obligation’ demonstration of the system anywhere in the UK.

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But just what are the applications where chain has the advantage? Firstly it’s the depth of cut which can be up to 60cm. Then it’s the ability to cut small, mechanical openings in a fraction of the time of other methods, for example, perfect corners and an endless variety of irregular shapes and flush cuts that are just not possible with circular saws. continued on page 20 16

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Product News

The all new Partner K750 Low emissions, low vibration, low maintenance and high power With the all new K750 power cutter, Partner have succeeded in developing a 12” (300mm) or 14” (350mm) petrol, hand held, power cutter that offers low emissions, low vibration, lower fuel consumption, lower noise levels and higher torque & power. In the traditional 2-stroke engine the fresh intake of fuel/air mix is used to expel the burnt exhaust gases, the problem with this is that some of the fresh fuel/air mix can be lost, being expelled along with the exhaust gases, causing harmful emissions. On the Partner K750, instead of flushing out the exhaust gases with this fuel/air mixture, it pushes out the burnt exhaust gases using fresh clean air. A simple, yet innovative process that Partner has developed and termed “Dual Charge”. The K750 engine is fitted with twin flushing ducts and a barrier of clean air is forced between the fuel mixture and the exhaust gases, pushing out the exhaust gases and leaving the fresh fuel/air mixture in the cylinder chamber, resulting in a ‘clean’ two stroke engine. “Dual Charge” technology delivers greatly increased torque, and increased power; it lowers fuel consumption by upto 33 percent, and, very importantly, reduces harmful emissions by as much as 70 percent without increasing the weight. Another advantage of this unique “Dual Charge” process is that it also lowers the engine’s

running temperature, therefore adding to the overall reliability of the machine. The fuel tank, handle, and intake system is an entirely new vibration dampening unit, resulting in significantly low handle vibration for the operator’s health and comfort. For the all new Partner K750 the results obtained in accordance to EN 1454 are: at top speed 3.3 m/s2 at the front handle, and 4.7 m/s2 at the rear handle. This latter, higher figure is the one that Partner quote, putting the machine within the green colour zone, as per the HAE colour coding traffic light reference. The K750 has the patented active air filtration system, based on 3 separate filter processes. Centrifugal force at the cooling fan separates approx 80% of the dust particles from the intake air. This pre-cleaned air then passes through the main filter, which is an oil impregnated foam filter before the third back-up paper filter stage. To now even further improve this filtration system, a settling compartment has been added where any extra dust can settle. continued on page 21

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Product News

Practise what you preach – the Nimbus way As HTC`s exclusive UK agent, Nimbus actively promotes the Swedish specialist’s unique Superfloor system. To prove the point Nimbus has created its own in-house Superfloor so that visitors to its Burgess Hill manufacturing centre can see the result for themselves. In a single weekend Nimbus sales managers Richard Rider and Chris Emmins transformed 40m2 of worn, 15year-old flint concrete into a ground and polished Superfloor demonstration area. The site’s machinery service centre provided the opportunity and since the floor of its goodsin/despatch area had been subject to busy forklift traffic over the years this proved the ideal area for treatment. The Nimbus managers commenced work on a Friday evening as the department shut up shop for the weekend. Using a 7.5 kW, HTC 650 machine, two initial grinding stages removed the top few millimetres of concrete and exposed the aggregate.

The HTC 650 machine in action at Burgess Hill

Then followed a grouting operation to take care of pinholes in the concrete and this was followed in turn by the application of an impregnator to harden the surface. Having left the floor to harden overnight, the twoman Nimbus team returned on the Sunday to carry out the final grinding stage followed by three stages of polishing. By late afternoon the job was finished and by Monday morning the service centre became fully operational once again. But the difference was not hard to find since the department now had a hard, long-life floor that is virtually maintenance–free, nonslip and environmentally friendly.

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Case Study continuation from page 5

bridge deck whilst the cutting was carried out within the tight constraints of the deck soffit.

Once the section of column to be removed had been divorced, they were then lifted out, and 6no x 75mm diameter x 1350mm deep holes drilled into the remaining section to facilitate the immediate installation of the new precast column heads. Running concurrently with the removal of the Stobcross on-ramp was the extensive removal and replacement of approx 1750m of the westbound parapet structure. Core Cut used its recently acquired Hilti TS20 high frequency Wallsaw to cut some of the parapet walls. This facilitated their subsequent removal using Robolition 150C equipment fitted with hydraulic crunching and breaking attachments to carefully reduce the parapet to deck level within a very

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restricted operating area. The reconstruction of the new parapet structure involved Core Cut using a Ferroscan to survey the remaining deck to determine the position of the existing reinforcement before installing approx. 12500no Hilti resin anchors which would act as starter bars for the new reinforcement.

Apart from floorsaws, varying types of drilling equipment, wiresaws, wallsaws, bursters, crunchers and Robolition equipment, Core Cut also used Bobcats and Microplaners to remove the residue of the road surfacing. As Jim Armour from Graham Construction said, “this project clearly showed the experience, expertise and comprehensive range of equipment that Core Cut has at their disposal to do an excellent job within the time limits.”

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Product News

New PRK™ System from ICS

providing faster cutting and much improved economy for 853PRO hydraulic saws continuation from page 16

ICS is proud to announce its latest innovation, the all-new PRK™ diamond chain cutting system. PRK™ is a sprocket-guide bar-diamond chain system combination which dramatically increases speed of cutting by up to 40%. Designed for use with ICS 853PRO hydraulic saws, PRK™ incorporates a higher tooth count drive sprocket system and new diamond chain design with narrower, low profile diamond segments. The PRK™ system will saw up to 11” deep with a tapered, wider-base guide bar. This new guide bar provides greater stiffness, making straighter cuts possible. The PRK™ diamond chain is now the lowest priced professional chain from ICS, so conversion is very economical, and as simple as

changing just the sprocket and guide bar. According to company president Jake VanderZanden “This innovation is specifically targeted at improved cutting speed and cost efficiency for Pros. We recognize that time savings is a strong benefit of ICS technology and PRK™ delivers more”. Diamond Chain Technology for cutting concrete was pioneered and made viable by ICS. Since introducing the world’s first concrete chainsaw in 1992, chainsaws have gained popularity because their portability (gas saw models) and depth of cut (up to 24”) provide the ability to cut small mechanical openings in a fraction of the time of other methods. Headquartered in Portland, Oregon, ICS is a division of Blount International Inc., a diversified manufacturing company with distribution in 130 countries worldwide. To learn more about ICS and its products, visit at www.icsbestway.com. 20

And all of this unique versatility is achieved at a speed other systems are unable to match and with a portable tool that’s safe, reliable and easy to maintain. And it’s not just concrete that can be cut: rebar reinforced concrete, masonry, concrete block, natural stone and abrasive concrete are just a few of the materials commonly encountered on which the ICS diamond chain saw is in its element. Ian Digger of ICS says, “Specifying diamond chain sawing means general contractors and engineers need not be afraid of tendering for difficult jobs. ICS professional saws are built to withstand heavy commercial use in the harsh environment of concrete cutting.” DSA Members who would like to arrange a free demo should call Ian Digger on 07870 633 358 or John Clark at Duradiamond 07836 229 358.


Case Study & Product News continuation from page 11

The job entailed cutting a reinforced concrete floor slab 250mm deep around the perimeter and breaking the reinforced concrete out with the Brokk 90. The openings were then cut and broken out through 500 mm thick brickwork wall behind the polythene screening using a diamond ring saw from both sides plus a Brokk 90 for breaking out. The Brokk 90 was a valuable asset to the completion of this particular project as it enabled MBC to speed up the work and reduce labour costs. In fact, the only only practical way of completing this project with the problem of fuel emissions and timescale was with the Brokk 90.

D-DRILL GET “SIGNED UP” BY PRE-SEASON CHELSEA F.C.

D-Drill (London & South Office) were recently called in to cut out a service duct to allow for the installation of a new gas main in the catering block at the prestigious Chelsea Village development. The task involved diamond core drilling through a 1 metre thick reinforced concrete ground beam at a precise angle to enable entry into the building which, in itself is a routine job. However, with the first game of the season only a couple of days away and capacity crowds expected for the local derby with Arsenal, there was no time for making good, etc. Within a couple of hours the job was completed without any damage to the newly completed building. Seen here being waved off by a satisfied customer is life-long Chelsea fan, Dave Smith, Supervisor of D-Drill (London & South Office) who “incidentally” carried out the work!!!

continuation from page 17

The all new K750 runs for even longer and with fewer intervals between services. A poly V-belt now offers strength and flexibility, giving longer service life and less need for adjustment, resulting in less down time. Starting is made easier for the operator thanks to a manually operated decompression valve. This device halves the amount of force required to pull-start the engine. The ergonomic styling and design of the all new K750 means that the exhaust muffler has been doubled in size and incorporates a larger intake system, allowing the engine to run 25 percent quieter, which benefits both the operator and the surrounding environment.

Partner have thought of the operator with many other features such as a reversible cutter arm that allows close cutting to a wall or floor, an integrated water kit to suppress dust, a clear window on the fuel tank to show how much fuel is left and avoid any unnecessary stoppages when fuel runs out unexpectedly. The all new Partner K750 - low emissions, low vibration, low maintenance, and high torque & power. For more information, or to arrange a demonstration, contact Partner Dimas UK Tel: 01453 820325. 21


Concrete Segments

Appointment at ICS Diamond chainsaw manufacturer ICS has appointed Nic Laurens as its European Sales and Marketing Manager. “I have joined ICS at a very exciting time” says Nic Laurens “We have a superb product range, and a good distribution network. I will be focusing on the development of customer awareness, showing what we can do”. Nic will be responsible for the sales and marketing in Europe, the Middle East and Africa.

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Concrete Segments

Presentation to Rex Robilliard At the end of the last Annual General Meeting of the Drilling & Sawing Association Ltd, the Board made a presentation of a Royal Crown Derby plate to Rex Robilliard who recently retired as President of the Association. Many of the people within the Drilling and Sawing Industry will have come across Rex during his period with the Association, both as Committee Member, Chairman and President. During this time the membership of the Association went from strength to strength. Also he was instrumental in developing the Drilling and Sawing Certification Scheme that now forms the basis of the Drilling and Sawing NVQ. Without Rex’s enthusiasm, our industry would not have achieved the standards of training and competence that are currently in evidence. We all wish him a happy and healthy retirement.

An In-site into Nimbus Technology

THE NEXT EDITION... The Journal welcomes information on any contract, large or small, involving drilling and sawing work. If you feel a project would make an interesting Case Study, please let us know, as we can help with the preparation of a feature for future editions of the Concrete Cutter. We need help in promoting our industry. Contact Hugh Wylde at the DSA Office: Tel: 01773 820000 E-mail: dsa@drillandsaw.org.uk

List of Advertisers Now up and running, the brand-new Nimbus website www.nimbus-diamond.com offers fast and easy access to a wealth of information. Diamond products are divided into three main application areas, construction, stone and floor preparation, in each case offering full details of tools, techniques and machinery. Also included are sections on news, covering the latest application stories, Health & Safety, with Do`s and Don`ts for drill and saw operation and a comprehensive section giving information on the parent company Saint-Gobain. The Nimbus site is subject to ongoing updating and development, and a new E-commerce facility, coming shortly, will make the site more interactive than ever.

CA Drillers .................................................. 22 Clyde Valley Drilling Ltd ................................ 7 Core Cut Ltd ................................................. 4 D-Drill (Master Drillers) Ltd.......................... 10 Diamond Drilling & Cutting Ltd.................... 20 Diamond Drilling & Cutting Services ............ 22 Dimas UK ................................................... 17 Drilling & Sawing Association .......... back cover Drilltec Limited ............................................ 13 Duradiamond Ltd ........................................ 16 East Midlands Diamond Drilling............... 3 & 9 Hilti (Gt Britian) Ltd ....................................... 5 Holemasters Demtech Ltd............................ 22 Kriscut Concrete Drilling & Sawing Co. Ltd... 22 Nimbus Diamond Tool & Machine Co. Ltd.... 18 Tyrolit UK Ltd............................................... 19 Xcalibre Equipment Ltd................................ 14 23



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