CDM ISO STRIP & FIX WALL

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1 & FIX WALL SYSTEM DATASHEET & FIX WALL is designed to acoustically decouple stud walls from the supporting floor structure, hence minimizing the flanking transmission of noise. It can be used to create Box in Box setups for permanent/load bearing walls, or to create a resilient attachment for a floating wall. This system utilizes the STRIP and ISO FIX resilient elastomers to secure the stud header and footer to the surrounding structure. The strip can be supplied with one or two selfadhesive sides. Installation: Place on surrounding structure Put header & footer in place and drill holes to fit ISO FIX Install ISO FIX and anchor to structure through drilled hole Steel Nut &Washer ISO FIX Required Data for Design: Required performance (insertion loss or natural frequency) Imposed permanent and temporary loads Contact surface (type and dimensions) This document is the exclusive property of Composite Damping Material () 191

2 & FIX WALL FIELD OF APPLICATION ISO FIX is a general fixation principle that provides acoustical decoupling of a suspended structure with respect to a supporting structure to which it must be connected (mainly for reasons of stability).ifwelldesigned, it ensuresan efficient reduction in the transmission of noise & vibration energy. Typical applications are: wall and structural fixation, machinery and equipment, guide rail isolation for elevator shafts, automated garage doors, pipe fixations, etc. DESCRIPTION Any of the SOLIDS materials in many shapes and sizes can be used for this application. The four components to a & FIX WALL system are: The Isolator: The resilient connection between the structure and the isolated object The Stabilizer(s): ISO FIX WALL The resilient connection between the fixation and the isolated object The Bushing: integral to ISO FIX WALL Additional resilience along the fixation (to reduce structure borne noise through the connection, especially at frequencies above 100 Hz) The Load ddistributor: ib t galvanized steel washer Typically a washer or plate to distribute isolated loads evenly on the isolator and stabilizer The following formula relates the required turning momentum M (in case a momentum key is used) to the precompression force F on the stabilizer: M = F * d / 5 (Where d = the nominal bolt diameter) During precompression, under static loading, the isolator and stabilizers act as a serial spring combination, where the precompression force over the stabilizers is equal to the precompression force over the isolator. This document is the exclusive property of Composite Damping Material () 192

3 & FIX WALL RECOMMENDATIONS The initial precompression force typically corresponds to a deflection of the stabilizer equal to 20% of the unloaded thickness. The equivalent static stiffness of the stabilizer(s) Kss (as a parallel combination of springs) is equal to the sum of the individual static stiffnesses of all the stabilizers. Kss should correspond to the equivalent static stiffness of the isolator Ksi. However, as the available surface of the stabilizers is usually smaller than the available surface for the isolator, the stabilizers should be made of a material with an equivalent (or higher) stiffness than the isolator in order to equalize the stiffnesses. The time of installation is often important for the design of the components. If precompression is applied before the gravitational load is supported by the isolator, the isolator will deflect during the installation of the mass (e.g. during construction of a building), thereby de stressing the stabilizers. Stabilizers should be designed so that they do not loosen, keeping the fixation stable at all times. If it is possible to precompress after the full gravitational load has been applied on the isolator, the stiffness and density of the stabilizer material can be equal or even lower than that of the isolator. In some cases, adjustment of the fixations both before and after installation of the isolated load may be useful. To do so, it is essential that all components remain accessible. ISO FIX systems act as a parallel combination of springs, meaningthat residual noise and vibration energy will be transmitted party via the isolator and partly via the stabilizer(s). The equivalent dynamic stiffness of the entire fixation Kd equals the sum of the dynamic stiffness of the isolator Kdi and the dynamic stiffness of the stabilizer(s) Kds. Therefore, one can estimate the influence of the stabilizers on the system dynamic stiffness using a factor of 2 if the unloaded thickness of the isolator and stabilizer(s) are almost identical. ISO FIX systems can also be used to fix vertical loads to a wall (i.e. elevator guide rails, or guide rails of automated garage doors). In this case it is recommended to resiliently support the load from beneath, to remove shear loading from the ISO FIX system. If this provision is not in place, the system elements could be improperly and unevenly loaded, and could cause short circuiting or improper performance of the system. 193 This document is the exclusive property of Composite Damping Material ()

4 & FIX WALL & FIX WALL INSTALLATION This document is the exclusive property of Composite Damping Material () 194

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