Tico CV-CA
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TICO Structural Bearings - CV/CA

TICO CV/CA - High Stress Bearing As building land in modern cities is at a premium, it is common practise to build on sites near or above main line and underground rail systems. In addition, construction is becoming more closely allied to other major transport networks. These trends in construction demographics result in large amounts of ground borne noise and vibration which is transmitted directly into buildings through their, often deep, foundations. Such vibrations are a nuisance, particularly in parts of buildings where quiet is of paramount importance. To achieve a major reduction in...

Physical Properties TICO CV/CA is a high stress material composed of vulcanized laminates of the highest quality neoprene elastomer, modified by the inclusion of cellular cork, and reinforcing layers of high tensile fabric. The bearing surfaces are of a special formulation created to accept slight irregularities in bearing surfaces and to facilitate bonding on site using adhesives. Maximum Recommended Working Stress Working Stress Range In excess of 3 times the maximum recommended working stress (in accordance with BS6177) Hardness (IRHD) Density (Typical) Temperature Range -30 to +70°C...

Bearing Stress vs Static Deflection Stress/Deflection Characteristics TICO CV/CA 30 25 These graphs have been prepared from the results of extensive testing over many years. Where appropriate, data has been presented in the form of a shadow graph to illustrate the effect of shape factor on performance of the pads. All data is presented for guidance only. Bearing Stress vs Natural Frequency Stress/Natural Frequency Characteristics TICO CV/CA 45

Shear Properties Shear Characteristics TICO CV/CA 3.5 Shear Stiffness (kN/mm) Creep Creep TICO CV/CA (125 mm thick) 24 Time (minutes)

Design Considerations Because of the wide range of applications for which TICO CV/CA is suitable, and the variation of material properties under different operating conditions, it is difficult to provide a simple design guide. Transmissibility TICO CV/CA 40 Key parameters in the specification of TICO CV/CA bearings are: Frequency Ratio Fd/Fn Operating loads (dead and live loads) Available space to incorporate bearings Required natural frequency of isolation system (bearings) Disturbing frequency of vibration to be isolated (if known) The load and available area will largely determine the...

Fail Safe Fail Safe Device Steel Dowel It is also advisable to include some form of fail safe such as a steel or concrete upstand in the foundation design to support the structure should failure of the bearings occur through a major fire or other exceptional circumstance. Any block fail safe system needs to be carefully designed to take into account the natural deflection (creep) of the bearings over long periods of time. Fail Safe The incorporation of resilient structural bearings into a structure has to be considered at an early design stage to enable a safe, effective and economical...

Installation Installation of TICO CV/CA Structural Bearings will vary from application to application and also depend on the design and arrangement of the bearings. For plain bearings, pads or strips should be securely fixed in position with Tiflex Marine Epoxy Adhesive. The instructions for use of this adhesive should be followed carefully and are available on request. Precast units can be placed directly on top of the bearing without any further bonding. Good surface preparation is essential for a strong and durable bond. Surfaces onto which the bearing is to be placed, and surfaces...

TICO CV/CA modular bearings with steel fail safes. Upper bearing plate bonded to pads, note fixing studs on surface to allow concrete to be cast on top.

Similar assemblies can be employed replacing the CV/ CA with CV/M or indeed a combination of both. TICO ceramic fire blanket provides fire protection for bearing. Completed bearing with environmental shrouding. When installing TICO CV/CA bearings, care should be taken to ensure that pads are not inappropriately loaded during the construction process i.e. high vertical or horizontal forces beyond the design parameters that would overstress or damage the materials. It should also be borne in mind that the bearings will continue to deflect during construction as the weight of the structure...

Storage and Handling Supply Details On arrival on site, TICO Structural Bearings should be stored away from direct sunlight, excessive heat, chemicals or any liquid media. They should be kept in a safe, secure location where they are unlikely to be damaged or tampered with, become immersed in water, or have other building materials stacked on top of them. Bearings should be handled with care during installation to ensure that they are not dropped or in any other way damaged. Damaged bearings should never be incorporated in the works and should be brought to the attention of the resident...

Tiflex recognises that in civil applications bearings often have to be custom sized to meet the project requirements and thus we are happy to supply custom sizes up to the maximum sheet size available. CV/CA bearing materials are available in thicknesses which are multiples of 25 mm. Typical thicknesses employed are 25, 50, 75 and 125 mm. For severe environments, bearing edges can be protected with a hypalon based coating applied during manufacture. In major installations where fire protection is required, Tiflex are able to supply a protective ceramic fibre blanket and environment...