tico structural bearings

Vibration isolation of structures using Tico Structural Bearings

Tico Structural Bearings provide amaintenance free resilient barrier for theisolation of structures from ground bornenoise and vibration.

Key advantages

• Supplied in virtually any size to suit specificconditions, so that the bearings can be engineered to give the required response.

• Can be supplied for a variety of construction methods from modular bearings on pile caps to continuous bearings in strip footings.

• Bearings can be fitted above or below ground level to suit the engineers’ requirements.

• Available in a number of grades.

• Suitable for a wide variety of applications from large buildings to light internal structures.

• All bearings manufactured from high quality constituents.

General principles

The dynamic behaviour of a mounted system canbe extremely complicated and is affected bymany factors, such as: -

• Stiffness of structure.• Weight of structure.• Disturbing frequency.• Isolation frequency.• Strain amplitude.

To achieve a major reduction in noisetransmission to a structure it is necessary toisolate the structure by the introduction of resilient bearings.

Typical CV/CA installation showing the “fail-safes” and bearing spacing to allow for “bulge”.

The resilient mounting of any structure should beconsidered at an early stage to enable a safe, effective and economic design to be engineered.

It is not possible to give a simple guide to thedynamic behaviour of a resiliently mounted structure, and advice should be sought from a consulting engineer experienced in this field.However, our Tico Structural Bearings departmentwill be happy to assist where possible.

Typical design for a studio or isolated room usingthe box within a box principle.

It will be appreciated that the selection ofbearings for a particular application is dependenton many factors. It is our custom to work closelywith consultants or other authorised bodies toensure that we provide a bearing best suited tothe application.

Industrial Products Division

Tico Structural Bearings

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Roof slab

Low frequencybearings (CV/LF)

Floatingfloor slab

MineralWool

Wall supportedon floor slab

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www.tiflex.co.ukTiflex Ltd, Tiflex House, Liskeard, Cornwall PL14 4NB. Tel: +44 (0) 1579 320808


Tico Structural Bearings

CV/CA high stress bearings

Vulcanised laminates of polychloroprene based rubber, enhanced by the inclusion of cellular particlesand alternated with reinforcing plies of high tensile fabric.

Maximum working stress 7 MN/m2

Working stress range 4.5 to 7 MN/m2

Breakdown In excess of 3 times maximum working stress (in accordance with BS6177)

Hardness (IRHD) 75 ± 5º

Density (typical) 1150 kg/m3

Temperature range –30 to +70º CPerformance of bearing may be impaired at extremes of durable temperature range.

Typical damping ration 0.043 to 0.053

CV/M medium stress bearings

This medium stress structural bearing uses the same high quality compound as is used in TicoCV/CA but is unreinforced except in the 50mm thick version, which has central reinforcement ofhigh tensile fabric.

Maximum working stress 1.4 MN/m2

Working stress range 1 to 1.4 MN/m2


Hardness (IRHD) 50 ± 5º

Density (typical) 1100 kg/m3

Temperature range –30 to 70ºCPerformance of bearing may be impaired at extremes of durable temperature range.

Typical damping ratio 0.065 to 0.085

CV/LF low stress bearings

This range of low stress bearings is supplied in two grades, both moulded from polychloroprene compounds in varying configurations.

CV/LF/B CV/LF/N

Maximum working stress 0.07 MN/m2 0.70 MN/m2

Working stress range 0.04 to 0.07 MN/m2 0.35 to 0.70 MN/m2


Hardness (IRHD) 40 ± 3º 40 ± 3º

Density (typical) 1050 kg/m3 1050 kg/m3

Temperature range –30º to +70ºC –30º to +70ºC

Typical damping ratio 0.06 to 0.085 0.06 to 0.085

A popular solution to the problem of structuraldamage caused by shrinkage, rotation,differential settlement and localised stresses

Key advantages

• Simply and economically installed between elements of a building, they provide a resilient barrier to prevent damage.

• Reduce the need for expensive finishes on mating surfaces.

• Attenuation of transmitted noise.

• Available in four grades and supplied as either standard strips or pre-cut seatings.

All Tico Resilient Seatings are manufactured fromthe highest quality materials and will prove bothdurable and age resistant over many decades,with a load bearing life expectancy in excess ofthe normal life of the structure.

Materials

There are four grades of resilient seatings, the selection of which is dependent upon a number offactors such as available support area, rotation,axial and shear loads.

Supply details

All grades of Tico Resilient Seatings can besupplied in 1200mm lengths with custom sizesavailable to suit indivdiual applications.Full technical data on all materials is availablefrom our Tico Structural Bearings department.This includes general properties, graphical dataand installation instructions


Tico Resilient Seatings

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Grade CV/PF/RS CV/CA/RS CV/M/RS CV/D/RS

Working stress 10 to 15.5 MN/m2 4 to 7 MN/m2 0.5 to 1.4 MN/m2 0.1 to 0.3 MN/m2

Ultimate breakdown In excess of 3 times maximum working stress.

Density 1200 kg/m3 1150 kg/m3 1100 kg/m3 540 kg/m3

Hardness (IRHD) 93 ± 5º 76 ± 5º 50 ± 5º 68 ± 5º

Coefficient of friction

Concrete 0.8 0.65 0.6 0.65

Steel 0.6 0.5 0.5 0.64

Durable temperature range –40 to +70ºC –40 to +70ºC –40 to +70ºC –40 to +70ºC

The Embankment Place, London, UK.


CV/PF/RS

A very high stress seating, manufactured frompress cured layers of heavy duty syntheticrubber proofed fabric, suited to the mostarduous applications.

• Separating member between combinations of steel or concrete

• Prevents damage from shrinkage or uneven support surfaces

• Employed successfully on oil rig applications

The CV/PF/RS is normally specified for arduoushigh load applications only.

CV/CA/RS

A high stress seating, manufactured from aparticle loaded polychloroprene rubber,reinforced with high tensile fabric.

• Large span floors

• Main support beams

• Bridge abutments

• Areas where support area is limited

The CV/CA/RS best satisfy the requirements ofthe majority of applications, the selection beingmade on the basis of applied stress.

CV/M/RSA medium stress seating, manufactured from aparticle loaded polychloroprene rubber; this isthe most popular seating material. Suitable fora wide range applications and can withstandhigh irregularities in support services.

• Main support beams

• Bridge abutments

• Floor slab expansion joint

• Separation between floating floor and wall

• Bund walls, etc.

The CV/M/RS satisfies the requirements of themajority of applications. The selection beingmade on the basis of applied stress.

CV/D/RS

A low stress seating, made from particleloaded polyisoprene rubber and benefiting from high damping.

Designed to accommodate normal surface irregularities under low load conditions.CV/D/RS is used in low stress applications, especially in situations benefiting from itsdamping properties.


Tico Resilient Seatings

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The Thames Flood Barrier, London, UK.

Ideal choice for accommodating large lateralmovements, particularly if associated with highvertical loads

Advantages and properties

• Maintenance-free sliding surfaces.

• Excellent wear and abrasion resistance.

• Tailored to suit individual applications.

• Comparable with the service life of the structure.

• Can be supplied ready bonded to steel backing plate for quick on-site installation.

• Excellent chemical and weather resistance.

• Low coefficient of friction between two sliding surfaces.

• Supplied with all characteristics of the resilient substrate for vibration and noise attenuation.

Supply details

Tico Bondslip bearings are manufactured tocustomers’ specific requirements and willgenerally comprise an upper and a lowercomponent. It is normal to supply the slidingbearings with the upper nylon component havinga larger plan area than the lower resiliently backedPTFE unit. This is to allow for the anticipatedmovement of the bearing and also to act as anumbrella, thus preventing detritus from collectingon the sliding surface. Our Tico StructuralBearings department will be pleased to advise onspecific designs and the selection of materials.

Bondslip identification

It is an advantage, and of considerable benefit tothe installer if the bearings are suppliedindividually identified, particularly when a varietyof sizes are employed. Bondslip units can besupplied pre-marked, each with their respectivelocation or grid position.


Tico Bondslip Sliding Bearings

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Physical properties

General properties of the typical lower member:

Construction of bearings All Tico Bond Slip Bearings are custom made forall applications. The most common construction isshown below (not to scale):

Upper member

Lower member

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Tico Bondslip Sliding Bearings

CV/PF/PT CV/CA/PT CV/M/PT

Working stress 15.5 MN/m2 5 to 7 MN/m2 1.4 MN/m2

Hardness of resilient substrate (IRHD) 93 ± 5º 76 ± 5º 55 ± 5º

Density of resilient substrate 1200 kg/m3 1150 kg/m3 1100 kg/m3

Coefficient of friction against load (PTFE to Nylon)

Stress 0.7 MN/m2 1.4 MN/m2 3.5 MN/m2 7 MN/m2

Coefficient of friction 0.09 0.07 0.05 0.04

20mm(min)

20mm(min)

Steel backing plate (gradeand thickness determinedby application). Factorybonded to sliding element.

Sliding element – 2.5mm CV/S/NGMolybdenum disulphide loaded nylonsliding face with CV/S backing forbonding to steel.

High quality PTFE factory bonded to resilientsubstrate. (Both PTFE and resilient substrategrades determined by application). Plandimensions always smaller than UpperMember CV/S/NG to create an umbrellaeffect, protecting the PTFE surface.

Allowing for heatdispersion duringwelding of backingplate to mainstructure.

Steel backing plate (grade and thickness determined by application).Factory bonded to sliding element.

Tiflex Limited has over fifty years experience inthe manufacture and distribution of a widerange of polymer-based materials andcomponents for use in industrial, marine,transportation, offshore, defence andconstruction applications.

Our Tico Structural Bearings products have a longhistory of success in attenuating the transmissionof ground borne vibration into buildings and otherstructures where vibration posed a problem.

This sophisticated range of products is dividedinto three categories, each withits own individual features that can betailored to the needs of the customer.

These categories are as follows:-

• Tico Structural Bearings

• Tico Resilient Seatings

• Tico Bondslip Sliding Bearings

The purpose of this brochure is to provide anintroduction to the Tico range of StructuralBearings. It is supported with technical datasheets and by the unrivalled service we offer tothe industry.

QualityAll Tico bearings are manufactured in accordance with Quality Standard BS EN ISO 9001.

StorageAll Tico bearings should be stored away fromdirect sunlight, excessive heat, chemicals, liquidsand cement. They must also be protected against surface damage during site storage.Under no circumstances should the bearings beallowed to become immersed in water or beplaced under other building materials.Where long-term storage is involved, a cool position away from direct sunlight is ideal.

InstallationBearings should always be handled with careduring installation. Damaged bearings should notbe incorporated in the works. The particulars ofthe damage should be brought to the notice ofthe resident engineer or consultant. Wherepossible the requirements of BS 6177 must becomplied with.

Customer supportTechnical data is available on all our materials.This includes general properties, graphical dataand installation instructions. Please do nothesitate to contact our Tico Structural Bearingsdepartment for help and advice.

Telephone: +44 (0) 1579 320808Facsimile: +44 (0) 1579 320802


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The Lloyds Building, London, UK.(Courtesy of Ove Arup & Partners)

Recommended supplementary products fromthe Tico range to complement our variousbearings and seatings

Adhesives and sealantsTico bearings should be secured in position with asuitable high quality adhesive such as:

• Tico contact adhesive rubber based contact adhesive suitable for use on light applications where a well prepared, dry and level surface exists.

• Tico marine epoxy adhesive suitable for arduous applications and in particular for medium and high stress bearings where awell prepared, dry and level surface exists.

• Tico A/SU two-part, cold curing polysulphide filler/sealant: may be used for horizontal filling where a permanently elastic joint is required.

Fire protectionTico resilient seatings and structural bearingshave a degree of natural fire resistance. Ininstallations where “fire sweep” could occur, Tiflexadvises the inclusion of extra fire protection.Our technical department will be happy to assistin the selection of the most appropriate material.

Sealing tapeTico A/ST waterproof adhesive tape is used toseal joins between seatings and infill materials toavoid the ingress of wet concrete during pouring operations.

Resilient collars and washersTico collars and washers are manufactured in arange of materials and configurations. They areused to prevent bridging of the isolation, causedby rigid contact with shear restraint dowels, bolts,etc.

Other bearing productsTiflex manufactures bearings and are notrestricted to the range we have brought to yourattention. Tiflex would be pleased to help youselect bearings that meet your requirements.

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Tico Structural Bearings Associated Products


Tico Critical Frequency Pads


For several decades Tiflex have beenmanufacturing materials which were speciallydeveloped to meet the demands ofapplications where low frequencies are thecritical factor. Tico CV/LF materials are able toisolate vibration and provide a naturalfrequency as low as 10Hz. However, TicoCV/LF materials, due to their construction, arefairly inflexible in the sizes at which they canbe supplied.

Tiflex have recognised this and have nowdeveloped a new range of structural bearingproducts which not only can be entirely flexiblein their size and where necessary thickness,but also can achieve a natural frequency underload of 8Hz. This could provide significantadvantages where attenuation of vibration iscritical. This range of products is called TicoCV/CF.

Typical Applications:• Floating Floors• Room within a room systems• Isolated foundations• Where the isolation of low

frequencies are critical

Code

CV/CF/B

CV/CF/N

Maximum Static Stress

(MN/m2)

0.07

0.7

Standard Thickness

mm (imperial)

35

25

Standard Sizes

mm (imperial)

100 x 100

250 x 250

500 x 500

100 x 100

250 x 250

500 x 500

Non-standard sizes are available up to a maximum pad size 1000 x 1000mm

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Key Features:• Unsurpassed isolation at low frequencies• Complete flexibility of supply• High lateral stability• Will isolate structures from ground borne vibration• Two grades to suit the majority of applications• Rapid installation• No mechanical parts to maintain• Should be used in conjunction with Tico adhesives• Can be provided as part of a full vibration

attenuation package including fail safes etc.• A standard range of sizes held in stock• Bespoke sizes available on request

Length(mm)

150

300

325

350

400

425

Width(mm)

Thickness(mm) Kg

300

325

350

400

425

Load RangeKN

150

175 175

200 200

250 250

275 275

25

25

25

25

25

25

25

25

25

25

5,000 - 8,000

8,000 - 10,000

10,000 - 15,000

15,000 - 20,000

20,000 - 25,000

25,000 - 30,000

30,000 - 35,000

35,000 - 40,000

40,000 - 50,000

50,000 - 60,000

50 - 80

80 - 100

100 - 150

150 - 200

200 - 250

250 - 300

300 - 350

350 - 400

400 - 500

500 - 600

Length(mm)

150

Width(mm)

Thickness(mm) Kg

Load RangeKN

150

175 175

200 200

225 225

125

125

125

125

10,000 - 15,000

15,000 - 20,000

20,000 - 22,500

22,500 - 27,500

100 - 150

150 - 200

200 - 225

225 - 275

Bearings to Achieve 25 Hz - Material CV/CA

Bearings to Achieve 10 Hz - Material CV/CA

250

275

300

250

275

300

125

125

125

27,500 - 37,500

37,500 - 47,500

47,500 - 57,500

275 - 375

375 - 475

475 - 575

Length(mm)

150

Width(mm)

Thickness(mm) Kg

Load RangeKN

150

175 175

200 200

225 225

125

125

125

125

2,000 - 3,000

3,000 - 4,000

4,000 - 5,000

5,000 - 6,000

20 - 30

30 - 40

40 - 50

50 - 60

Bearings to Achieve 25 Hz - Material CV/M

250

275

300

250

275

300

125

125

125

6,000 - 8,000

8,000 - 9,000

9,000 - 10,000

60 - 80

80 - 90

90 - 100

125 125 125 1,500 - 2,000 15 - 20

Deflection

Deflection

Deflection

3mm

3mm

3mm

3mm

3mm

3mm

3mm

3mm

3mm

3mm

18-23mm

18-23mm

18-23mm

18-23mm

18-23mm

18-23mm

18-23mm

2-3mm

2-3mm

2-3mm

2-3mm

2-3mm

2-3mm

2-3mm

2-3mm

NB: Loads indicated above are loads needed to achieve required natural frequency. They are not the maximum recommended loads for that pad size

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Length(mm)

100

1000

1000

1000

Width(mm)

Thickness(mm) Kg

250

500

1000

Load RangeKN

100

250 250

500 500

1000 50

1000 100

35

35

35

35

35

35

35

35

40-60

250-375

1,000 - 1,500

0.4 - 0.6

2.5 - 3.75

10-15

Length(mm)

100

Width(mm)

Thickness(mm) Kg

Load RangeKN

100

250 250

500 500

1000 50

25

25

25

25

450 - 650

2,800 - 4,000

11,200 - 16,000

4.5 - 6.5

28 - 40

112 - 160

Bearings to Achieve 8-10Hz - Material CV/CF/B

Bearings to Achieve 8-10 Hz - Material CV/CF/N

1000

1000

1000

100

250

500

25

25

25

Deflection

5-6mm

5-6mm

5-6mm

NB: Loads indicated above are loads needed to achieve required natural frequency. They are not the maximum recommended loads for that pad size

Deflection

3-4mm

3-4mm

3-4mm

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1000 1000 25

- Standard Products

Length(mm)

1200

Width(mm)

100

1200 200

1200 500

1200 1000

12.5

12.5

12.5

12.5

1200

1200

1200

50

100

200

25

25

25

1200 50 12.5

1200

1200

500

1000

25

25

Length(mm)

1200

1200

1200

1200

1200

1200

Width(mm)

Thickness(mm)

150

300

600

1200

75

75

1200 150

1200 300

1200 1200

1200 75

6

6

6

6

6

12.5

12.5

12.5

12.5

12.5

1200

1200

1200

1200

150

300

600

1200

25

25

25

25

CV/CA/RS

CV/PF/RS

Thickness(mm)

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Length(mm)

1200

1200

1200

1200

1200

1200

Width(mm)

Thickness(mm)

50

100

200

500

1000

50

1200 100

1200 200

1200 500

1200 1000

6

6

6

6

6

12.5

12.5

12.5

12.5

12.5

CV/D/RS

CV/M/RS

1200

1200

1200

1200

1200

50

100

200

500

1000

25

25

25

25

25

Length(mm)

1200

1200

1200

1200

1200

1200

Width(mm)

Thickness(mm)

50

100

200

500

1000

50

1200 100

1200 200

1200 500

1200 1000

6

6

6

6

6

12.5

12.5

12.5

12.5

12.5

1200

1200

1200

1200

1200

50

100

200

500

1000

25

25

25

25

25

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- Standard Products - Resilient Seatings

Project

The Trocadero Centre, London

Orville Road Housing Development, London

Eland House,London

MBC TV Studio, Battersea, London

Lantau Bridge Crossing, Tsing Ma Bridge, Hong Kong

Centre West, Hammersmith, London

Stanhope Gardens, London

36 Gloucester Avenue, London

Port Dundas, Glasgow

The Broadway, Wimbledon

Blackfriars Court, London

Evangelist House, London

Pomaret & Irdier Housing, Barcelona, Spain

CAD-B Project, Singapore

Consultants & Contractors

Ove Arup & Partners, Arup Acoustics

John Savage Associates

Ove Arup & Ptns, Hann Tucker Associates, John Mowlem Const

SW Davies, Amec Building

Mott MacDonald

Clarke, Nicholls & Marcel

Ernest Green Partnership, Sandy Brown Associates

Michael Blackler Partnership, Sandy Brown Associates

Waterman Partnership, Hann Tucker Associates

Pell Frischmann, Hann Tucker Associates

Pell Frischmann, Hann Tucker Associates

dPAC Constructions, Estudi Acustic H Arau

China Construction, NAP Acoustics

Thorburn Colquhorn, New Acoustics, Dawn Construction

Cinema Projects

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Casa Da Musica, Portugal

Runcorn Arts Centre

Somague, Dorsserblesgraaf

John Miller & Partners, Arup Acoustics, G Seddon Construction

Wood Green Cinema, London

Virgin Cinema, Cardiff

Multiplex Cinema, Isle of Wight

Mokotow Cinema Complex, Warsaw, Poland

Odeon Cinema, Dundee

Janki Cinema Complex, Warsaw, Poland

Viking Bowl Cinema, Thurso

Falkirk Cinema Complex

CTP Leisure Development, St. Helens

Brayford North Multiplex, Lincoln

Multiplex Cinema, Church Street, Lancaster

Leisure Cineplex, Festival Place, Basingstoke

The Light @ Leeds

Fulham Broadway

The Rotunda,

29-39 Head Street, Colchester

WA Fairhurst & Partners, Carnaby Structures Ltd

John Allen Associates, Wescol Glosford Plc

Edward Roscoe Associates, MDA Polska

Edward Roscoe Associates, MDA Polska

John Allen Associates, Simons Construction

J&D Pierce (Contracts) Ltd

Isleburn Structural Services

Atlas Ward Structures

BD Structures Ltd

Billington Structures

Whitby Bird & Partners, Serverfield-Reeve

White Young Green, Billington Structures

PEP Civil & Structures Ltd, Alan Saunders Associates, SDC

Clarke, Nicholls & Marcel, Alan Saunders Associates, Bourne

White Young Green, Hoarel Lea Acoustics, Costain

Ward Cole, Sharps Redmore, Simons Construction

Plaza Cinema, Regent St. London Waterman Partnership, Spectrum Acoustic Consts, William Hare

The Peacock Centre, Woking LG Mouchel & Partners

Ove Arup & Partners, Watson Steel Structures

Manchester Free Trades Hall Manchester Buro Hapold, Billington Structures

Welsh Millennium Centre Cardiff

www.tiflex.co.ukTiflex Ltd, Tiflex House, Liskeard, Cornwall, PL14 4NB, Tel: +44 (0) 1579320808

- Past Projects

tico structural bearings

Documents

alan saunders associates

high tensile fabric

includes general properties

maximum recommended loads

level surface exists

industrial products division

ground borne vibration

cornwall pl14 4nb