fklowry
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FK Lowry Piling LtdNI Office: Lisburn+44 (0) 28 9250 1450ROI Office: Carrick-on-Shannon+353 (0) 71 961 6866Email: [email protected]: www.fklowry.com
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FK Lowry Piling provides foundation and infrastructuresolutions throughout Ireland, operating on major commercialschemes through to smaller residential developments.
We focus on delivering quality piling solutions supportedby expert knowledge and a professional service, workingin partnership with our clients to deliver projects on timeand within budget.
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Our Company
Our heritage spans four decades.We have been trading as FKLowry Piling Limited since 2004,when our parent company, LaganHoldings, merged FK PilingLimited and Lowry Piling (Ireland)Limited. Since the merger, FKLowry Piling has continued tobuild on the success of itspredecessors, blending the skills,resources and expertise of bothcompanies as the largest residentpiling specialist in Ireland.
In recent years we have significantlyincreased and improved our pilingand foundations capability andbusiness operations, driven by:
• Recruitment of key experienced andspecialist personnel
• Ongoing training and personaldevelopment programs to thebenefit of our staff, company and customers
• Completion of quality, environmental, safetyand other benchmarking accreditations
• Continual investment innew plant, processes and technology with 12 rigs, inhouse design servicesand concrete product manufacturing
Our market presence spansthe entire island with landmarkprojects including VictoriaSquare in Belfast and HeustonSquare in Dublin. In 2006, ourparent company, Lagan Holdings,acquired Dew Piling, a sheet pilingspecialist based in the UK.
This now positions FK LowryPiling as the only piling companyin Ireland which is able to offeraccess to the entire range ofpiling solutions.
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1 | Precast foundation system2 | CFA rig3 | Junttan PM20 rig4 | Viking hammer5 | Heuston Square, Dublin
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Accreditations & Policies
As an innovator and market leader, wehave attained all relevant accreditationswhich provide our customers with additionalconfidence and reassurance that FK LowryPiling represents a quality company witha responsible and professional approachto business, our customers, our employeesand the environment.
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Most recently we achieved certification of our Integrated Management Systemfrom SGS UK Ltd. This assessment addressed the relevant standards, namelyquality, environmental and health and safety.
QualityWe realise that in a demanding and challenging marketplace we will onlysatisfy customer requirements by investing in the best people, plant, processesand technology to fulfil our own high performance expectations when it comesto delivering quality in all areas of product range, manufacturing standards,operations and service. Our quality focus has resulted in independent auditedaccreditations such as ISO 9001 and membership of the Federation of PilingSpecialists, which resulted from a detailed and challenging audit from the firstindustry body to introduce compulsory auditing for its members. The FPS auditalso addressed environmental, health and safety, training and technical ability.
1 | CFA crew2 | Barcoded precast pile3 | PM20 rig instrumentation4 | CFA rig, auger inserted5 | Junttan PM20, precast install6 | Pile reinforcement cage
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EnvironmentSince being awarded the ISO 14001 standardmid-2003 our culture of continuous improvementhas realised significant environmental advantages.
We continuously endeavour to reduce the effectsof our operations on the environment and to lead theway in terms of environmental awareness. This hasresulted in numerous changes in order to reduceour carbon footprint. Such improvements include:• Changing from oil based burners in our
manufacturing plant to a cleaner natural gas solution• Implementing separate disposal and recycling
facilities for used materials• Implementation of motion sensor lighting in our offices• Use of GGBS in our piles as a cement replacement• Use of bored displacement piling thus reducing the
amount of spoil to be disposed to landfill• Installation of geothermal piles for clients wishing
to avail of ground heat sources.
Health & SafetyAs a manufacturing and contracting company involvedin the construction industry, the health and safety ofour workforce is of paramount importance. Since2004 we have held OHAS 18001 and Safe-T-Certstandards in recognition of our safe working practices.
While OHAS 18001 is a cross-industry standard,Safe-T-Cert was developed jointly by theConstruction Employers Federation in Belfastand the Construction Industry Federation in Dublinspecifically for our sector. We have also won industrycommendations and awards, including NISO/NISGOccupational Safety Awards 2007.
PeopleOur people are the key to our success.The depth of experience that we offer to clientsis unique given the diverse backgrounds of our staffin the global foundations industry and the Irishconstruction sector. All staff actively pursue agreedpersonal development plans as part of our Investorsin People accreditation.
We have developed company policies andinitiatives in conjunction with our staff to achieveobjectives in relation to business delivery andstakeholder satisfaction.
Corporate Social ResponsibilityAs a responsible company we support numerouscommunity based initiatives including Habitat forHumanity and Business in the Community as wellas supporting sports clubs, schools and charities.
Accreditations Summary:
• Integrated Management System• Quality: ISO 9001• Environmental: ISO 14001• Occupational Health & Safety: OHAS 18001• Federation of Piling Specialists• Safe-T-Cert• Investors in People
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FK Lowry Piling offers 8 types of piling solutions to clients throughoutIreland. We believe that no other resident piling company has accessto such a comprehensive piling solutions portfolio.
Piling Solutions
1 | Croke Park, Dublin2 | Victoria Square, Belfast3 | Raking pile install, Michelstown bridge abutment4 | Cathedral Quarter, Belfast5 | St. Anne’s Cathedral, Belfast6 | Belfast docks7 | Heuston Square, Dublin
Our main piling and foundationsproducts include:
1. Driven Precast & Steel PilesDriven precast piles represent our original core product. We havemore than 30 years experience installing them throughout every countyin Ireland. Our driven piles may be steel H, steel sheet, steel tubular orprecast concrete.
2. CFAContinuous flight auger (CFA) piles are a low noise and vibration free solutionin comparison to driven piling. CFA piles are used where the project environmentis sensitive to such issues.
3. Precast Foundation SystemOur precast piles, caps and ground beams products, which are fullyinsured and designed to British Standards, have been installed throughoutIreland as a quality fast-track build solution.
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4. Retaining WallsWe have extensive experience installing retaining walls,both secant and contiguous, in projects throughout Ireland.Other piles include rotary bored, CFA, DTHH, sheet andking post piles.
5. Rotary PilesRotary bored piling methods are used when large diameterpiles are required to provide high load capacity or fordealing with difficult ground conditions such as bouldersand rock. The system uses a telescopic Kelly bar andtemporary steel casing over the upper part of the pile.When the pile is bored to the required founding strataa reinforcement cage is inserted and the pile is usuallyconcreted using the tremmie technique.
6. Rock Drilling (DTHH)We offer rock drilling using down the hole hammer (DTHH)methods for sizes up to 600 mm in diameter.
This removes the requirement for chiselling and coring inrock and due to the high penetration rates of DTHH equipmentensures more rapid project completion. Other drilled pilesinclude CFA and rotary bored.
7. Bored Displacement PilesOur extremely powerful drilling rig is capable of screwinga simple drilling tool into the ground while displacing soilsideways. Bored displacement piles are used where lowvibration and minimal spoil generation are important inproject delivery.
8. Sheet PilingDew Piling, based at Oldham in England, is the specialistsheet piling company within Lagan Holdings. Dew Pilingis the leading UK sheet piling contractor with over 70years experience, specialising in permanent and temporarysheet and web piles. Dew has now completed a range ofprojects in Ireland and our access to their expertisestrengthens our overall piling portfolio.
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Driven precast piles represent our original core product. All piles are manufacturedto BS EN 12794 standards. We have more than 30 years experience installing pilesthroughout every county in Ireland. Our driven piles may be steel H, steel sheet, steeltubular or precast concrete.
1. Driven Piles
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Driven piles are an economical piled foundation in comparison withsome other systems available on the market. It is a ‘displacement’system in that the existing soils are ‘displaced’ in the ground bythe pile being driven in rather than the soil being removed from theground by boring of the material. This is one of the many advantagesof using driven piles as there is no spoil to be removed from site.Other advantages include:
• Off site manufacture of the piles under controlledfactory conditions
• Direct loading capacity being determined duringpile installation
FK Lowry has phased out all rope operated rigs for the installationof driven piles and these have been succeeded by purpose built stateof the art Junttan PM20 piling rigs. There are currently 7 in the fleetand these are capable of installing a variety of pile types, sizes andsections in order to deal with almost any loading condition encounteredwithin the construction industry today. All rigs are fully instrumentedwith the latest NDT computerised recording system, providing realtime data on length, set and rate of installation and additional recordswhich can be used in our QA management system.
For technical information on the jointing process, dimensions andloads see Page 20.
The Manufacturing Process• Input materials are sourced from other Lagan companies and delivered to our
precast pile manufacturing facility in Lisburn• Casting of piles takes place under quality controlled processes using undermould
heating systems for rapid curing• Each pile is given a unique bar code for traceability and stock control purposes• Piles are moved into stock piles for final curing• Our dispatch office manages the distribution of piles to our projects throughout
Ireland ensuring efficient timely delivery to meet project needs
Example projects using Driven Piles include:
Project
Retail Development, LetterkennyBulk Store, Belfast Docks
Corbally Link Road, Limerick
Westlink, Belfast
Sligo ESB
Mitchelstown
Scope
270mm precast concrete piles450mm CFA, 270mm & 355mm heavily reinforced verticaland raking piles for new storage facility305mm steel H - piles and 270mm precast piles for newbridge abutments and link road270mm piles (5 No different reinforcement specifications)for new retaining wall structure250mm precast mini piles installed with purpose built rig fornew pylon bases for a new ESB distribution line355mm precast concrete piles installed to a 1:4 rake
Approx. Value
€ 1,900,000£ 1,100,000
€ 280,000
£ 250,000
€ 82,000
€ 80,000
1 | Raking pile installation2 | Quality checked stock piles3 | Pile manufacture
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FK Lowry Piling has carried out bored continuous flight auger (CFA)piling throughout Ireland since 1990. This is a low noise and vibrationfree system in comparison to driven piling.
2. CFA Piles
The method involves drilling the pile to a design depth andpumping high slump concrete through the central auger stemas the auger is withdrawn.
The system is controlled by onboard computer which measuresdepth, concrete flow, torque and pressure. Given that the boreis supported by the augers during pile construction it eliminatesthe requirement for temporary casing support fluids and istherefore particularly well suited to waterbearing ground conditions.
After concreting operations have been completed, reinforcementis installed by plunging or vibrating the cage into the wet concrete.
CFA piles are installed using Soilmec CM48 and CM50 for pilediameters between 300mm and 600mm diameter. For pilediameters between 600mm and 900mm and bored displacementpiling the higher torque Soilmec R625 and Junttan 18-30 machinesare used for installation.
4 | Inserting pile cage, Duncrue, Belfast5 | CFA rig, Queen’s University, Belfast6 | Dublin
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Example projects using CFA include:
Project
Victoria Square, Belfast
Duncrue WwTw, Belfast
Sligo WwtwCossan, AthloneLongwood Rd, NewtownabbeyStockmans Lane, BelfastCustom Barracks, Athlone
Scope
Mix of 600mm and 750mm diameter CFA, 750mm diameterbored and 219mm diameter bottom driven mini piles600mm diameter bearing pilesand 900mm diameter secant piled retaining wall600mm diameter bearing piles for settlement tanks450mm diameter piles for residential housing development450mm diameter bearing piles for retail development750mm diameter bearing piles for bridge foundations300mm diameter bearing piles
Approx. Value
£ 4,200,000
£ 700,000
€ 400,000€ 250,000£ 130,000£ 100,000€ 50,000
Launched in 2003, our Concrete Products Division manufactures precast caps, beamsand piles for use in projects throughout Ireland. Our system fulfills growing contractordemand for the provision of a one-stop rapid solution to piled foundations.
3. Precast Foundation System
The robust, durable beams are predominantly precast units made atFK Lowry’s yard from other Lagan raw materials and transported tocustomer sites.
The precast system is a rapid solution to piled foundations, acceleratingthe build program for the contractor by reducing the timescale forfoundation completion by up to fifty per cent. We also negate the needfor an external design cost as full design of the foundation system isdelivered in-house.
Additional benefits include reduced wastage, a safer system of work,higher QA standards, non-weather dependant implementation, and fullyinsured, certified and guaranteed solutions. The contractor also hasonly one sub-contractor to deal with, reducing the number of differenttrades and suppliers and management of those trades on site.
The foundation system is installed using either our Junttan PM20 rigsor our new excavator mounted Viking piling hammer and 30 tonnetracked excavator.
Our beams are manufactured in either 350mm or 450mm widths ina quality controlled environment. Each solution is designed to suitthe requirements of the individual project. In addition to the exampleprojects detailed below, we also provide solutions for smallerdevelopments and even single self build houses throughout Ireland.
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Scope of Caps & Beams Projects• Precast concrete pile supply & installation• Break down piles and expose steel• Construct pilecaps either in-situ or precast• Supply and install precast ground beams• Install formwork and grout beam joints
Concrete Foundation Package• One reputable contractor• Robust system• Short lead in & construction times• Safer system of work• Environmentally friendly• Quality of service• Product guaranteed
Example projects using our Precast Foundation System include:
Project
Kinlough, Co. LeitrimLisdoo, DundalkMeadowlands, DownpatrickWell Rd, WarrenpointThe Cotton, DonaghadeeMill Valley Park, Ligoniel
Scope
93 No detached houses110 No houses30 No townhouses13 No detached houses24 No townhouses15 No houses
Approx. Value
€ 1,300,000€ 720,000£ 260,000£ 230,000£ 170,000£ 100,000
1 | Cut piles and cast caps2 | Beams delivered and positioned3 | Beams jointed, grouted and backfilled4 | Floor slabs delivered and positioned
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Opposite:5 | Secant wall, Golden Lane, Dublin6 | Retaining wall, Dublin7 | Bearing pile installation, Heuston Square
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Contiguous Wall
• Constructed like bearing piles (CFA techniques)• Guide wall not necessary• Designed for bending moment and shear• Can be load bearing• Spacing - dependent on soil• Economical• NOT a water retaining structure
Secant Wall
• Positive interlock• Water retaining• Reinforce “male” piles only• High lateral resistance/load bearing• High tolerances with guide walls• Complex wall layouts• Conventional rotary/CFA plant• Economic alternative to diaphragm wall
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We have extensive experience installing retaining walls, both secant and contiguous,in projects throughout Ireland. These walls can be constructed to tight tolerancesclose to existing buildings to maximise basement size. FK Lowry is viewed within theindustry as offering the full package from design to successful project delivery.
4. Retaining Walls
Both types of walls can be designed to cantilever or propped(anchored external or internal) to restrict displacement of the wall.Secant walls will provide protection against water up to Type A inaccordance to BS8102. Sequencing of installation is also ofparamount importance in the installation of both types of wall.
These walls maximize the space of the basement footprint whichis of increasing interest to developers as land prices continue toescalate. These walls can also be designed to take permanentloads, both axial and moment, from the structure above reducingthe need for internal columns within the basement.
Contiguous and secant walls can be installed using our entireCFA fleet. The selected rig is dependent on ground conditionsand required pile size.
The table below illustrates how we have been involved in projects ofall sizes. At present we have the capability to install walls up to 900mmin diameter with a pile length up to 25 metres. The retained height isdependent on ground conditions, the largest to date being 14 metres.
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Example projects using Retaining Walls include:
Project
Westgate (Heuston Square), Dublin
Linenhall St, Belfast
Wellington Square, Belfast
Main St, Killbeggan
Crumlin Rd, Belfast
Scope
750mm & 900mm diameter secant wall with ground anchorsand 600mm diameter tension piles600mm diameter secant piled retaining wall & bearing pilesfor retail development 600mm diameter secant wall and 450mm diameterbearing piles for residential development600mm diameter contiguous piled wall for residentialdevelopment 450mm diameter contiguous piled wall forresidential development
Approx. Value
€ 4,500,000
£ 360,000
£ 200,000
€ 80,000
£ 50,000
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Rotary bored piling methods are used when large diameter piles arerequired to provide high load capacity or for dealing with difficult groundconditions such as boulders and rock.
5. Rotary Piles
In operation, a telescopic Kelly bar and temporary casing is used toform piles up to 60m in depth which greatly exceeds even the largestof CFA piling rigs. The augers fitted to this type of rig are “short”flights with the augered soil brought to the surface and removed fromthe auger by “spinning off”. Various tools can be used to deal withvariable ground conditions encountered including bottom-openingdigging buckets for gravels and core barrels equipped with hardenedteeth for breaking up weakly cemented deposits.
Forming the pile with rotary boring equipment requires installation oftemporary steel casings over the upper portion of pile bore which isin loose or weak unstable ground. The temporary casing also sealsoff water below the water table and allows the pile to be constructedin a dry bore. Typically, the steel casing is handled by a crane andinserted using the rig or a casing oscillator. A stabilising fluid suchas bentonite or polymer may be added when it is not possible to installcasings to sufficient depth to ensure stability of bore during drilling.
Concreting in “dry” bores is usually a straightforward procedure. Oncompletion of the drilling, the reinforcement is placed with suitablespacers centrally in the bore. During concreting, the casing is withdrawn,always maintaining a head of concrete within the casing. In water-bearing ground the tremmie method of concreting is employed toensure that concrete is placed to the base of the pile.
Additional advantages of rotary bored piling methods over standardCFA piling include, firstly, that concrete can be left low where deepcut offs are required. Secondly, given that the reinforcement is placedin the pile bore prior to concreting, it is possible to use much longerreinforcement cages than is possible with CFA.
Example projects using Rotary Piles include:
Project
Ballylumford CCGT Power StationHilton Hotel, BelfastDodder Spillways, DublinBT Tower, BelfastWellington Rd, Enniskillen
Scope
750mm diameter bearing piles 900 & 1200mm diameter bearing piles900mm diameter contiguous piled wall1200mm diameter bearing piles 600mm diameter contiguous piled wall
Approx. Value
£ 1,100,000£ 650,000€ 600,000£ 500,000£ 150,000
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1 | Rotary piling, Victoria Square, Belfast2 | Rotary piling, Victoria Square, Belfast3 | Ballylumford
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FK Lowry Piling can provide rock drilling using down the holehammer (DTHH) methods at pile sizes up to 600mm diameter.
6. Rock Drilling (DTHH)
This removes the requirement for chiselling and coring in rockused in rotary bored piling and due to the higher penetrationrates of DTHH equipment this ensures more rapid completionof the project.
DTHH piles are typically used as an alternative to rotary boredpiling methods when high rock levels or the presence of bouldersprohibit the use of standard CFA bored piling. The loading capacitycan be significantly higher than CFA given that the piles can befounded within competent rock.
There are challenges associated with the DTHH system. Thissystem is for rock drilling and therefore the system does not dealwell with overlaying strata. In such instances overburden systemsare required which include the provision of temporary or permanentcasings. It is also essential to control the issue of rock chippingsand dust by using water injection in the lines, shrouding of thehammer and adequate protective site hoarding.
Example projects using DTHH include:
Project
Shelbourne Rd, Ballsbridge
M50, Dublin
York St, DublinRossaveel
Scope
610mm diameter secant piled retaining wallfor retail development610mm diameter retaining wall for proposedhighway scheme 610mm diameter bearing piles for retail development610mm diameter permanently lining bearing piles
Approx. Value
€ 300,000
€ 300,000
€ 250,000€ 120,000
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4 | DTHH5 | DTHH bit6 | Soilmec rig, Rosaveel
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Bored displacement piles are used where low vibration andminimal spoil generation are important in project delivery.
7. Bored Displacement Piles
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Bored piles are normally selected due to low vibration duringinstallation compared to driven displacement systems. However,bored piles generally produce spoil as the material is removedfrom the bore and replaced with concrete in situ.
Bored displacement piles also have the advantage of low vibrationbut are formed by rotating and pushing the digging tool into theground and displacing the sides of the bore. Hence little or nospoil is generated by a bored displacement system.
Bored displacement piling requires very high torque machinesin order to screw the drill rods and tool into the ground. Not allground conditions are suitable for this method of piling and itsuse is generally limited to granular rather than cohesive materials.
We have developed new digging tools to ensure our plant issuitable for a wider range of ground conditions. Other benefitsof this approach include reduced pile lengths for equivalent orgreater load capacity.
Displacement piles are installed using Soilmec R625 and Junttan18-30 piling rigs.
We have carried out Bored Displacement Piling at:
Project
Linenhall St, BelfastMays Meadow, BelfastButtercrane Shopping Centre, NewryLisburn Rd, BelfastStockmans Way, Belfast
Scope
450mm diameter bearing piles for retail units450mmdia bearing piles for retail units450mm diameter bearing piles for retail development450mmdia bearing piles for retail units450mm diameter bearing piles for residential development
Approx. Value
£ 120,000£ 90,000£ 80,000£ 80,000£ 40,000
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1 | Pile installation2 | Bored displacement heads
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Dew Piling, based at Oldham in England, is the specialist sheet piling company withinLagan Holdings. Dew Piling is the leading UK sheet piling contractor with over 70 yearsexperience, specialising in permanent and temporary sheet and web piles.
8. Sheet Piling
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3 | Combi-wall and cofferdam, Limerick Tunnel4 | Dalston5 | Dundee Combi Wall6 | North Street Culvert
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Sheet Piling projects include:
Project
Limerick Tube Tunnel
Keshcarrigan, Co.Leitrim
The Point Theatre, Dublin
Ikea Store, Belfast
Cherry Valley, Belfast
Scope
Two large cofferdams on either side of the River Shannonalong with temporary access jetties extending into the river.Steel sheet piles and large steel tubular piles driven asa combi-wall.400 sheet piles at water’s edge of housing andmarina development180No 18m SX27 high yield sheet piles forpermanent basementLX25 x 11m long installed using a 17m ABI LeaderRig for temporary cofferdam7.5m long VL605 sheet piles to stabilise a road
Approx. Value
€ 13,000,000
£ 250,000
£ 200,000
£ 30,000
£ 25,000
Dew has now completed a range of projects in Irelandand our access to their expertise strengthens our overallpiling portfolio.
The company also undertakes projects which involve tubularpiles, H piles, tension piles, walings, ties and anchors.
Areas of Dew expertise include:• Roads and Bridges: cofferdams, access jetties, sheet
piling and temporary sheet pile walls• Industrial, Commercial and Residential: permanent
sheet piling, temporary sheet piles, ground anchors• Ports and Harbours: coastal defences, dock wall
stabilisation, construction of quay walls, sheet piled slipways, cofferdams for outfalls and mooring dolphins
• Permanent Basements: Steel sheet piles to retain theground and carry vertical loads, which are increasinglybeing specified for permanent basements, car parks andunderground water tanks
• Canals and Inland Waterways: jetties and floating mooringpontoons, concrete capped steel pile moorings, embankment stabilisation, flood alleviation, sheetpiling to seal potential leaks
• Environmental: Temporary and permanent cut-off walls,use of sealants to restrict flow of contaminants throughsheet pile clutches
• Rail: Sheet pile walls for slope stabilization, steelbearing piles to support overhead gantries
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Here is a sample of ourmain rigs. Manufacturerdata sheets on theseand additional rigs areavailable to downloadfrom our websitewww.fklowry.com
Plant
TECHNICAL SPECIFICATION CM - 50 R - 625
Description Hydraulic Piling Rig Hydraulic Piling Rig
Number in Fleet 2 1Products installed CFA piles, Down the Bored Piles, CFA Piles, Displacement
Hole Hammer Piles Piles, DTHH piles and Precast Piles, Steel Piles, Sheet Piles
Depth Range 25 metres Up to 45 metres dependingon method
Size Range Typically up to 600mm Up to 2500mm diameterdiameter Cast in Situ Piles Drilled Piles
Leader (self erection)Length 22808 22500Max Pile length 19000 + 6000 extension 19000 + 6000 extensionMax pile diameter mm 900 1200Max drilling speed rpm 41 30Max torque kNm 100 240Winches (single line pull 1 layer)Main winch Kelly/hammer kN 102 240Optional main winchAuxillary winch 41 140Optional auxiliary winch 1Auxiliary winch 11 for CFAEngine Cummins QSB5.9C Deutz BF6M 1016CFuel Tank LitresHydraulicOil flow max litres/min 320 2 x 280Pressure max bar 300UndercarriageTransport width mm 2900 3000Working width mm 4200 4200Crawler length mm 4660 5350Width of track shoes mm 900 900Ground Pressure kN/m2 106 146Weight kg (approx) 39000 70000Rotary heads for bored pilesHydraulic hammers for DPC rigsMax energy (kNm)Max stroke (mm)Blows per minute, adjustableRam weight (kg)Total weight (kg) incl drive cap
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PM 18–30 PM 20 RAMTEC VR1 RTG 19M LEADER RIG
Hydraulic Piling Rig Hydraulic Piling Rig with Excavator Mounted Hydraulic Hydraulic VibratoryAccelerated Drop Hammer Piling Rig Leader Rig
1 7 1 1Bored, CFA, Displacement, Precast Piles, Precast Piles, Sheet and Steel PilesDTHH, Precast, Steel Steel Piles, Sheet Piles Steel Piles, Sheet Pilesand Sheet PilesUp to 45 metres depending Unlimited (depending on Unlimited (depending onon method ground conditions) ground conditions)Up to 2500mm diameter Typically up to 350mm Square 200/250/270mm Square Max 19m PileDrilled Piles Precast Concrete Piles Precast Concrete Piles
25050 22000 5620 12150 Min / 20340 Max19000 + 9000 extension 15000 10000 190001200 4042300
200 100150
120 80 17.510050Cummins QSM11 Cummins QSM5.9 Depends on Base Machine CAT C16 (Water Cooled)850
2 x 258 + 196 2 x 160 + 86 45 2 x 350300 300 200
Depends on base machine (DOBM)3500 3100 DOBM 30004500 4100 DOBM 45005640 4760 DOBM 50001000 800 DOBM 700195 135 DOBM 10075000 54700 4400 + Base Machine 55800
60 501200 130040–100 1–1105000 20007900
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The following two pages display technicalconsultation tables of information which youmay find useful for quick reference purposes.
1. Consultation Tables
Technical
Choosing a Piling System
PRECAST CONCRETE CFA CONCRETE ROTARY
Advantages Disadvantages Advantages Disadvantages Advantages Disadvantages
Value - most Lateral ground Large size range Depth limitations Large size/load Sloweconomical movement 300mm to 1200mm (up to 24m) rangesolution
Large size/ Low shear/ High moment Limited length of Depths up to 65m Expensive - labourload range moment capacity shear capacity reinforcement & plant intensive
Unlimited depth Noise/vibration Low noise/ Not good with High shear/ Spoil removalvibration obstructions moment capacity
Raking piles Inability to Speed of Spoil disposal Low noise/ Requires continuouscan accomodate penetrate rock installation vibration concrete supplylateral loads
Groundwater not Obstructions can Can bore into weak Concrete supply Allows visual Bore Support -a limitation to be difficult to weathered rock inspection of castings/bentonite/construction overcome sub soil polymer/waterprocess
Off site fabrication Rock boringgreater confidence can overcomein QA obstructions
Self proving ‘set’ Can maintainindicates load tight tolerancescarrying capacity
Follow on workcan progressimmediately
No spoil/arisings= clean site
Pile Type
Displacement Replacement
CFA Rotary BoredCast In–SituPrecast
LargeDisplacement
LowDisplacement
BoredDriven AugerDTHH
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Geotechnical Specification
Reinforcement Data
Sectional Areas of Groups of Bars mm2 (Mild Steel Groups)
Weights of Groups of Bars KG per Linear Metre (Mild Steel)
Bar Size
mm 1 2 3 4 5 6 7 8 9 10
6 0.222 0.444 0.666 0.888 1.110 1.332 1.554 1.776 1.998 2.220
8 0.395 0.79 1.185 1.58 1.975 2.37 2.765 3.16 3.555 3.950
10 0.616 1.232 1.848 2.464 3.080 3.696 4.312 4.928 5.544 6.160
12 0.888 1.776 2.664 3.552 4.440 5.328 6.216 7.104 7.992 8.880
16 1.579 3.158 4.737 6.316 7.895 9.474 11.053 12.632 14.211 15.790
20 2.466 4.932 7.398 9.864 12.330 14.796 17.262 19.728 22.194 24.660
25 3.854 7.708 11.562 15.416 19.270 23.124 26.978 30.832 34.686 38.540
32 6.313 12.626 18.939 25.252 31.565 37.878 44.191 50.504 56.817 63.130
40 9.864 19.728 29.592 39.456 49.320 59.184 69.048 78.912 88.776 98.640
50 15.413 30.826 46.239 61.652 77.065 92.478 107.891 123.304 138.717 154.130
Bar Size
mm 1 2 3 4 5 6 7 8 9 10
6 28.3 56.6 84.9 113.2 141.5 169.8 198.1 226.4 254.7 283
8 50.3 100.6 150.9 201.2 251.5 301.8 352.1 402.4 452.7 503
10 78.5 157 235.5 314 392.5 471 549.5 628 706.5 785
12 113 226 339 452 565 678 791 904 1017 1130
16 201 402 603 804 1005 1206 1407 1608 1809 2010
20 314 628 942 1256 1570 1884 2198 2512 2826 3140
25 491 982 1473 1964 2455 2946 3437 3928 4419 4910
32 804 1608 2412 3216 4020 4824 5628 6432 7236 8040
40 1260 2520 3780 5040 6300 7560 8820 10080 11340 12600
50 1964 3928 5892 7856 9820 11784 13748 15712 17676 19640
TERM UNIAXIAL COMPRESSIVE FIELD ESTIMATION OF HARDNESSSTRENGTH MN/M2
Extremely Strong > 200 More than one blow of geological hammer requiredto break specimen
Very Strong 100–200 More than one blow of geological hammer requiredto break specimen
Strong 50–100 Hand held specimen can be broken with single blow ofgeological hammer
Moderately Strong 12.5–50 5mm indentation with sharp end of geological hammerModerately Weak 5.0–12.5 Cannot be cut by hand into triaxial specimen
Weak 1.25–5.0 Crumbles under firm blow with sharp endof geological hammer
Very Weak < 1.25 May be broken in the hand with difficulty
Rock StrengthBased on Geological Society Engineering Group Working Party reports
Standard Penetration Test Sands and Coarse Silts Undrained Shear Strength of Cohesive Soils (C.P. 2004)
NO. OF BLOWS RELATIVE ANGLE OF*
PER 300MM DENISTY INT FRICTION
DEG
0–4 Very Loose < 29
4–10 Loose 29–30
10–30 Medium Dense 30–36
30–50 Dense 36–41
Over 50 Very Dense < 41
(* after Peck, Hanson and Thorburn)
UNDRAINED FIELD INSTRUCTIONSC.P. 2001 1957 WIDELY USED SHEER
STRENGTHKN/M2
Very Stiff Hard > 150 Brittle or very toughStiff Stiff 100–150 Cannot be moulded
Firm to Stiff 70–100 in the fingersFirm Firm 50–75 Cannot be moulded
Soft to Firm 40–50 in the fingers bystrong pressure
Soft Soft 20–30 Easily moulded inthe fingers
Very Soft Very Soft < 20 Excludes betweenthe fingers when
squeezed in the fist
CONSISTENCY
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Pile JointingThe Section to be joined is lowered on to the previously driven section. A metallocator, fitted as the pile is being lifted, assists in precise mating of the two jointplates. Four locking keys are inserted in the corners of the pile and driven home.Final security of the joint is achieved by burring over joint plate corners to lockthe keys permanently in position.
The standard Hardrive joint is designed to match the pile strength in compressionand tension. For specific conditions a modified Hardrive joint is available that fullymatches the pile strength in compression, tension and bending.
Pile Dimensions and LoadsHardrive piles can be manufactured in nominal sizes ranging from 250mm to 355mmsquare and with design loads ranging up to 1500 kN. Standard sizes manufacturedin Ireland are given in the table below. For guidance purposes only, typical normalmaximum pile lengths and loads are given but in favourable circumstances, Hardrivepiles have been installed with capacities and lengths in excess of these. The actualloading of piles under specific contract conditions depends upon the spacing andlength of the piles and sub-strata conditions. Hardrive piles have been successfullydriven to depths in excess of 70 metres in ideal conditions.
1 Having installed the first pile unit the secondone is lowered on to it and aligned by means of the metal ferrule
2 & 3 Four locking keys are inserted in the corners of the pile joint and driven home.
4 The ends of the plate corners are deformedto lock the keys permanently into the joint.
Driven precast piles represent our original core product. We have more than30 years experience installing them throughout every county in Ireland. Ourdriven piles may be steel H, steel sheet, steel tubular or precast concrete.For further information on our projects and the manufacturing process see page 8
2. Hardrive PrecastConcrete Piling System
Typical Working Loads
Driven Precast Piles CFA Piles
250mm 600-800kN 300mm dia. 300-500kNWL WL
270mm 800-1000kN 450mm dia. 1000-1200kNWL WL
355mm 1350-1500kN 600mm dia. 1500-2000kNWL WL
The above loads require The above loads requirea minimum concrete a minimum concretestrength of 45N/mm2 strength of 30N/mm2
Pile Dimensions and Loads
Normal Normal Unit Length Normal Range Safe Design Load (kN)
External (6m, 8m, 10m, 12m)
Size (mm)
Min (m) Max (m) Cohesive Non- Rock
Soils Cohesive
Soils
250 x 250 3.5 12 400-600 600-1000 600-1000
270 x 270 3.5 12 600-800 800-1200 800-1200
355 x 355 3.5 12 1000-1200 1200-1500 1200-1500
The Jointing Process
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Lateral LoadsDepending upon the precise loading and soil conditions.Hardrive piles can be designed to withstand some degreeof lateral loading.
As a guide, a vertical pile would normally be designed tosustain a lateral load of more than 2-3% of its designedaxial load (typically 10-25kN) in favourable groundconditions. For higher lateral loads it is normal to takeadvantage of the ability of the Hardrive pile to be drivenat a rake of up to 1 in 3.
A note of caution should be sounded in that rakingpiles may be subject to high bending stresses wheninstalled through deep fill or compressible soil asmay occur beneath, for example, an embankment.Our technical department would be pleased to adviseon individual situations.
ConcreteThe piles are cast in factory conditions using highstrength concrete with a characteristic strength of50N/mm2. The mix is also designed to provide a highearly strength to allow demoulding of the units within24 hours of casting.
ReinforcementThe reinforcement cage is composed of four mainlongitudinal bars bound into the corners of the squarespiral or helix which forms the lateral reinforcement. Thelongitudinal reinforcement bars are usually high yieldsteel of either 12mm, 16mm, 20mm, or 25mm diameter,depending upon the loading conditions.
As an alternative configuration eight 12mm diameter highyield steel bars can be used. The spacing of the links ofthe lateral steel varies along the body of the pile, beingclosest at the end of each unit to restrain the burstingforces generated during driving.
Main longitudinal reinforcement is either hot-rolledor cold-worked deformed high yield steel to BS4449:2005with a minimum specified characteristic yield strength(s-c-y-s) of 500N/mm2. Spiral reinforcement is round mildsteel bar to BS4482:2005 with a minimum s-c-y-s of250N/mm2 or hard drawn high yield steel wire toBS4482:2005 with a s-c-y-s of 500N/mm2.
3. Material Properties
Pile Longitudinal Section
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Summary
Pile Types
• Driven Precast• CFA• Precast Foundation System• Retaining Walls
(Contiguous & Secant)• Rotary Piles• Rock Drilling (DTHH)• Bored Displacement Piles• Sheet Piling
Main Plant
• CM-50 (x2)• R 625 (x1)• PM 18-30 (x1)• PM20 (x7)• Ramtec Viking VR1 (x1)
Factfile: FK Lowry Piling
• Largest resident piling specialist in Ireland• Expertise in creating foundation solutions
in or on poor ground• History spanning 4 decades• 2 locations serving all of Ireland• 12 rigs• CFA, Bored, Precast and Steel Pile installation• Rock Drilling expertise• Precast Piles of 250, 270 and 355 made
any length using jointing systems• Concrete products division including
Precast Foundation System
• Rotary Bored• In house product design• Committed to excellence in all areas of
our business• Accreditation in areas of Quality,
Health & Safety, Environment, IIP• Highly responsive to all customer requirements• Dew Piling acquired by Lagan Holdings in
2006. Dew Piling is a major sheet piling contractor with over 70 years experienceand 7 rigs operating throughout the UK
Supporting Ireland’s Regeneration
Belfast Dublin
Accreditations:
• IntegratedManagement System
• Quality: ISO 9001• Environmental:
ISO 14001• Occupational Health
& Safety: OHAS 18001• Federation of Piling
Specialists• Safe-T-Cert• Investors in People
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Contacts
1. FK Lowry Piling Ltd.5 Pond Park Road East,Lisburn, Co. Antrim BT28 3RQ.T: +44 (0)28 9250 1450 F: +44 (0)28 9250 1451E: [email protected] Walsh, Managing Director;Douglas Cook, Operations Director;Robert Sleator, Technical Director;Adrian O’Rourke, Precast Foundation System
Email: [email protected]
2. FK Lowry Piling Ltd.Unit 14 Park Lane,Townparks,Carrick-on-Shannon,Co Leitrim.T: +353 (0) 71 961 6866F: +353 (0) 71 961 6867E: [email protected] Bannard, Business Development Manager ROI
Web: www.fklowry.com
Example Projectsby RegionThe following map illustrates a sample ofthe locations throughout Ireland where wehave carried out projects in recent years.Project values range from several thousandto several million pounds/euros.
LEINSTERRetail Units, Omni Park, Dublin St Bridget’s School, Dublin Apartments, Blackrock Rd, Dundalk Lanesborough ESB pylon bases, Longford Office development, Fitzwilliam Quay, Dublin Retail & Office Units, York St, Dublin Retail Development, Capel St, Dublin Athlone Rd, Longford Custom Barricks, Athlone Housing Development, Cossan, Athlone Kilkenny Leisure Centre Retail Unit, Castlecomer Rd, Kilkenny Residential & Retail, Heuston Sq, Dublin Portlaoise Retail Park Tallaght Arts Centre Housing, Point Rd, Dundalk Housing, Wexford M50 Widening
MUNSTERKemmy Business School, Limerick University Castletroy Park Hotel, Limerick Corbally Link Rd, Limerick Mitchelstown Bridge Abutments, Tipperary Boathouse, Limerick University Euro Business Park, Cork Nenagh to Limerick N7 Upgrade Languages Building, Limerick University Tallow, Waterford Bunratty, Shannon Raheen Business Park, Limerick
CONNAUGHTRetail Park, Carrick-on-Shannon Wastewater Treatment Works, Sligo Toberbridge, Sligo Residential Development, Kinlough, Leitrim Altamount St, Westport Geesala, Ballina Keshcarrigan Marina Development Residential, Atalia Rd, Galway
ULSTERHotel, Victoria Place, Belfast Shopping Centre, Monaghan Housing, Scotch Street, Portadown Housing, Downpatrick Rd, Killyleagh Retail Park, Letterkenny Comber High School Bangor AcademyHousing, Ballyconnell Marina, CavanHousing, Drumquine, OmaghHousing, Jubilee Rd, Newtownards Asda, Enniskillen Housing, Meadowlands, Downpatrick Ulster American Folk Park, Omagh Housing, Bunbeg, Donegal Kilroot Power Station, Carrickfergus Harbour Upgrade, Warrenpoint Custom House Apartments, Belfast Cathedral Quarter, Belfast Magilligan Prison Wastewater Treatment Works, Letterkenny Brookfield Special School, Moira Westlink Retaining Walls, Belfast Office Development, Clarendon Dock, Belfast