tico structural bearings
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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
Industrial Products Division
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
Breakdown In excess of 3 times maximum working stress (in accordance with BS6177)
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
Breakdown In excess of 3 times maximum working stress (in accordance with BS6177)
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
Industrial Products Division
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.
www.tiflex.co.ukTiflex Ltd, Tiflex House, Liskeard, Cornwall PL14 4NB. Tel: +44 (0) 1579 320808
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.
Industrial Products Division
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.
Industrial Products Division
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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www.tiflex.co.ukTiflex Ltd, Tiflex House, Liskeard, Cornwall PL14 4NB. Tel: +44 (0) 1579 320808
Industrial Products Division
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
Industrial Products Division
Tico Structural Bearings Introduction
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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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www.tiflex.co.ukTiflex Ltd, Tiflex House, Liskeard, Cornwall PL14 4NB. Tel: +44 (0) 1579 320808
Industrial Products Division
Tico Structural Bearings Associated Products
Industrial Products Division
Tico Critical Frequency Pads
www.tiflex.co.ukTiflex Ltd, Tiflex House, Liskeard, Cornwall PL14 4NB. Tel: +44 (0) 1579 320808
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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- Standard Products
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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Tiflex Ltd, Tiflex House, Liskeard, Cornwall, PL14 4NBT: 01579 320808 W: www.tiflex.co.uk
- 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