products, applications and technical information · 2 anchor systems (international) ltdsupplies...

Products, Applications andTechnical Information

2

Anchor Systems (International) Ltd suppliesmechanical and grouted anchor systems for a wide range oftemporary and permanent works. It is the exclusive UK supplierof the well proven and versatile range of Vulcan earth anchorswhich have been employed worldwide for a multitude ofstructural and groundwork applications.

Vulcan earth anchors provide an efficient, reliable and cost-effective means of stabilising stone and masonry structures aswell as slopes and embankments consisting of virtually anydisplaceable substrate. Immediate proof loads upto 450kN are achievable on a single anchor in the correctground conditions and grouted mechanical anchors, a conceptdeveloped by Anchor Systems, further increases theireffectiveness in weak substrates.

As part of its on-going programme of improving Vulcanperformance, Anchor Systems was also instrumental in thedesign and application of complete stainless steel anchorassemblies, incorporating high yield bars, to enhance theirstrength, durability and overall life expectancy. It also originatedthe Combi-Tec system of fully concealed anchor installation, withno external plates, for listed, historic and sensitive structures.

Formed in 1995, Anchor Systemsoffers a comprehensive advice,design, specification and sitetesting service. It supplies groundanchors, helical anchors andconcrete anchor bolts to principlecontractors or direct to clientsthroughout the UK, Ireland andinternationally.

ComprehensiveServiceAdvice and specification assistanceOur technical team is available to provide advice on appropriateanchor schemes. To prepare a specification it is essential toestablish: load requirements with safety factors; soilcharacteristics; soil report; bore hole logs if available; installationdepth of anchor and setting out; design life of the system; top endtermination.

Site testingThe anchor system should always be proof tested on site prior tocommencement of the main works to confirm the holdingcapacity of the anchor in the prevailing substrate.

Installation serviceFor those clients requiring a complete supply and installationservice we can offer a list of approved contractors for most areas.

Equipment hireFor clients involved in one-off installation or who do not intend topurchase equipment we offer for hire all the necessary tools andequipment to undertake anchor installation.

ContentsIntroduction ......................................................2Comprehensive Service ....................................2Vulcan Applications...........................................3Vulcan Range....................................................4Load Bearing and Pattress Plates ......................4Vulcan Anchor Sizes..........................................4Vulcan Installation.............................................5

Pipeline Anchoring ............................................6High Yield Bars..................................................6Anchor Drains ...................................................6Tree Anchoring System .....................................6Vulcan Design and Performance........................7Project Reports .............................................8-9Clients ............................................................10

3

Applications

Structural Stabilisation

Slope Stabilisation

Erosion Control

Temporary Structures

Underwater Fixtures

ReliableProviding immediate, simple and very effective stabilisation, Vulcan earth anchorsystems have wide ranging applications for both temporary and permanent worksand have proved themselves to be reliable under virtually all displaceable groundconditions.

Cost-effectiveWith rapid installation, they are both efficient and cost-effective and have beensuccessfully employed around the world for stabilising structures and slopingground, securing temporary works, erosion control and underwater projects.

VersatileVulcan anchors can be supplied in anodised aluminium, galvanised cast iron andcomplete stainless steel assemblies. They are available in a range of sizes andoffer a choice of termination plates, including a fully concealed top termination withthe Combi-Tec system, making them ideal for historic or listed structures.

� Sheet piles and trench sheeting

� Retaining walls

� Road and rail embankmentsand cuttings

� Bridge abutments

� Lock and canal walls

� Tunnel linings

� Gabion baskets

� Revetment matting

� Coastal defences

� Cliff stabilisation

� Overhead gantries

� Geotextiles and bio rolls

� Scaffolding

� Guyed structures and masts

� Temporary relocatable structures

� Pipelines and buoys

� Seabed matting

� Floating docks

� Tree kits

� Ski mats

� Security chains and locks

� Covered tennis courts

VULCAN®

AS-10Material:Stainless Steel; Cast Iron SGLoad range:4 – 27 KN

Tie Bar:Carbon Steel

Tendons:Paracore; StainlessSteel; MS Galvanised








4

The Range


Anchor Type Tie Bars & Tendons Load Bearing andPattress PlatesLoad bearing top termination or pattress plates are custom madeto individual sizes, shapes and materials to suit customers’specific individual requirements.

Tie Bar:H.Y. Carbon Steel

Tie Bar:H.Y. Carbon Steel

Anchor load ranges are for guidance only

Tie Bar:Carbon Steel

Tendons:Paracore; StainlessSteel; MS Galvanised

Tie Bars:H.Y. Carbon SteelStainless Steel

Tendons:Stainless Steel;MS Galvanised









Developed byAnchor Systems, theCombi-Tec systemcomprises a stainlesssteel tube, front plateand polyester sockwhich is insertedover the installed anchorbefore pressure fillingwith grout to produce amechanical and chemicalbond within the structure.This provides a totallyconcealed top terminationfor Vulcan earth anchors,making it ideal for historicand listed structures.

5

Installation

Machine Mounted Hand Held

Vulcan anchors are designed to be driven into the ground usinghydraulic or pneumatic equipment, with little or no disruption tothe structure or surrounding area.


Once the anchor has been driven to the required depth the driverod is removed.


A tensile load is applied to the attached tie bar or tendon. Thisrotates the anchor into the locked position for maximum loadholding capacity. The anchor is then proof tested to thedesigned loading requirements before the top termination isfitted, as specified by the civil or structural engineer.

1. Remove stone or brick or core drill clearance hole

2. Position anchor for installation

3. Drive in anchor to required depth

4. Insert Combi-Tec sock over Vulcan anchor

5. Inflate sock by injecting cementitious grout andleave to cure

6. Tension anchor to working load and secure torecessed front plate with load nut

7. Crop excess bar, mortar around Combi-Tec

8. Replace cored material and make good

Combi-Tecconcealed toptermination

6

� traditional or Paracore tree kits� robust and easy to install� no special tensioning tools needed� anchor points hidden below ground� easily re-tensioned or de-tensioned

PipelineAnchoring System� for land or underwater applications� corrosion resistant components� Kevlar webbing connects pairs

of anchors to secure pipeline

High YieldBars

Tree AnchoringSystems

Anchor Drains

� carbon steel for temporaryapplications

� stainless steel for permanent andcorrosive situations

� stainless steel tensile strength inexcess of 650N/mm2

� can be cut on site withoutdamaging thread

� anchors can be simply extended asrequired by means of a threadedcoupler

� system can be safely grouted toenhance performance

� enables anchors to bere-tensioned, if necessary

� ideal for road and railwayembankments and retaining walls

� relieves puddle pressure� prevents ground becoming saturated� helps avoid embankment failure

� rapidly and easily installed� simple, effective and economical � available in cast iron with carbon

steel bar or stainless steel

Vulcan Anchor Drains are a quick, simple andeffective means of reducing water puddlingwithin clay slopes and behind retaining walls.

A length of ‘Colbond’ wicking material issecured to the Vulcan anchor bar by means ofcable ties and strain relief nuts. Once theanchor has been installed in the normal waythe drive rod is withdrawn and the AnchorDrain provides an instant drainage channel.

7

Design & Performance

ConsiderationsLoad RangeFrom 1kN – 450kN subject to ground conditions.

Required Life Span/ Material Specification1. Long Term corrosion resistance for up to and in excess of 120 years using

Grade 304 or Grade 316 passive stainless steel. 2. Medium Term up to and in excess of 40 years using cast iron galvanised

anchors fitted with stainless steel tendons.3. Short Term, i.e. temporary works, using cast iron galvanised anchors with

either carbon steel high yield bars or galvanised tendons.4. Light Weight anchors are normally supplied in LM 25 aluminium.

N.B. All of the above are subject to prevailing ground conditions and the presenceof any aggressive properties such as acids or stray electrical currents. Insulators orinsulating membranes should always be used to separate dissimilar metals.

Performance RequirementsWorking and proof loads are achieved by selection of the appropriate anchor for theground conditions. All components, including tie bar details, are designed to a safetyfactor as agreed with the specifier.

Programme ConsiderationsThe simplicity of the system and its speed of load application make the Vulcansystem a favourite for tight programme situations.

Visual AppearanceTop terminations for tie bars and tendons can be varied to suit the situation. Thesecan be fully concealed for visually unobtrusive stabilisation of historic or listedstructures. Pattress plates in various sizes, shapes and materials are available tosuit specific requirements.

ANCHOR SYSTEM AS05 AS10 AS20 AS30 AS50 AS90 AS120 AS200 AS300 AS400

Tendon Type M-8 M-12 16mm HYB 16mm HYB 20mm HYB 20mm HYB 25mm HYB 28mm HYB 30mm HYB 30mm HYB

Independent destructive TESTof Mechanical anchor head (kN) 30 55 70.74 112.6 195.3 195.3 222.2 356.7 450 500

Ultimate strength of tendon (kN) 15 64 121 121 188 188 295 370 566 566

Limiting structural strength 13.5 49.5 63.7 101.3 169.2 169.2 200 321 405 405

Anchor Head surface area mm2 3,481 6,781 15,637 21,130 29,093 48,734 104,517 65,886 104,769 216,078

Common Soil Type Description Blow Count or “SPT” Ultimate anchor resistance (kN)

Very Dense and/or CementedSands; Coarse Gravel and Cobbles 60+ 13 27 63 87 119 169 199 271 405 450

Dense Fine Sand; Very HardSilts and Clays 45 - 60 12 24 57 77 106 169 199 242 384 450

Dense Clays; Sands and Gravel;Very Stiff to Hard Silts and Clays 35 - 50 10 20 48 64 89 149 199 202 322 450

Medium Dense Sandy Gravel;Very Stiff to Hard Silts and Clays 25 - 40 8 16 38 52 72 120 199 163 259 450

Medium Dense Course Sand and Sandy Gravel; Stiff to Very Stiff Silts and Clays 14 - 25 5 11 26 35 49 82 177 112 178 367

Loose to Medium Dense Fine to CoarseSand; Firm to Stiff Clays and Silts 7 - 14 4 7 18 24 33 56 121 76 121 251

Loose Fine Sand; Alluvium; Soft-FirmClays; Varied Clays; Fill 4 - 8 3 6 14 18 26 43 93 58 93 193

Peat; Organic Silts; Inundates;Silts; Fly Ash 0 - 5 2 4 10 14 19 33 71 45 71 148

Vulcan Ultimate Holding Capacities in kNs

N.B. For guidance purposes only – True capacity must be tested with a load lockerTests have conclusively shown that if an anchor is grouted into poor ground, the results achieved are very good. Details are available upon request.Note: All underground work requires proper safety and location procedures. do not install an anchor until you know what is below the surface. It isimperative in all cases that all anchors are fully load locked before being put into service.

LEAST SUSCEPTIBLEto corrosive attack (more noble)

MOST SUSCEPTIBLEto corrosive attack (less noble)

Platinum

Gold

Silver

Stainless Steel, Type 316(passive) - Vulcan

Stainless steel, Type 304 (passive)

Titanium and its alloys

Monel

Copper-nickel alloys

Copper

Aluminium bronzes

Gunmetals

Brasses

Tin

Lead

Stainless steel, Type 316 (active)


Lead/tin solder, 50/50


Cast iron

Mild steel

Cadmium

Aluminium and its alloys

Zinc and its alloys

Magnesium and its alloys

Corr

osio

n su

scep

tibili

ty o

f met

als

All kN loadings are based upon theoptional tendon choice for themechanical Anchoring systems toachieve Ultimate Resistance Test.

8

Project

Sheet PilingDocklands Light Railway

Gabion BasketsNelson Close, Exeter

RevetmentMattingSt Agnes, Scilly Iles

Cliff StabilisationNefyn, Gwynedd, North Wales

Embankment StabilisationThe A2 at Boughton

GeotextilesMerstham Cutting, Croydon

GuyedStructuresTelegraph Poles,Network Rail

9

Reports

Retaining WallsMerthyr Vale

Tennis Court CoversGarnison Tennis Club, Strasbourg, France

ScaffoldingPower lines crossing railway tracks

Bridge AbutmentsLondon to Brighton Mainline

Temporary RelocatableStructuresChelsea Flower Show

Tree KitsNew Business Park

Anchor Systems has provided stabilisation solutions on a wide varietyof major projects for an impressive list of key contractors, leading

engineering consultancies, local authorities and government agenciesplus a considerable number of private clients, including:

Main Contractors� Alfred McAlpine� John Mowlem� Carillion� AMEC� Morrison Construction� Brown & Root� Amey � Rock Engineering� TJ Brent� Celtic Rock� Norwest Holst� Denys, Belgium� JN Bentley� RMG Construction JV� Charterbuild� Skanska� Birse Rail� Laing Group� Jackson Rail� Kier Group� WT Specialist Contracts� Fondedile� Thyssen� Ritchies� CAN� Dean & Dyball� Breheney� May Gurney� Miller Civil Engineering

Consultants� Ove Arup� Glamorgan Engineering� Consultancy� Anthony Hunt Assoc.� Crouch Waterfall & Ptnrs� Mouchel� Atkins� Babtie Group� John Grimes Partnership� Opco� Halcrow� ABB Lumus Global� Scott Wilson Kirkpatrick� Maunsell� Capita Symonds� Veryards� Cass Hayward & Ptnrs

Local Authorities& GovernmentAgencies� The Highways Agency� The Environment Agency� Norwich City Council� Rochester upon Medway

City Council� City of York Council� Surrey County Council� Torquay Borough Council� Council of the Isles of Scilly� Gwynedd Council� Devon County Council� Shepway District Council� South Gloucestershire

Unitary Authority� Essex County Council� Exeter City Council� Plymouth City Council� Gateshead Metropolitan

Borough Council

Private Clients� DeBoer Structures� Arena Structures� D&R Scaffolding� Dixons Scaffolding � Trad Scaffolding� SGB Scaffolding� Amps Scaffolding� Network Rail� London Underground� British Waterways� BT Cellnet� Lisbon Airport Authority� Anglian Water� Green-Tech� Radius Plastics� BP, Holland� Cable Domes� Walter UK� Ballymore� Shell, Holland� Greenfix� Dawson Wam

Anchor Systems (International) LtdUnit 45, Rowfant Business Centre, Wallage LaneRowfant, West Sussex England RH10 4NQ

Tel: +44 (0) 1342 719362 Fax: +44 (0) 1342 719436e-mail: [email protected]

www.anchorsystems.co.uk

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