Acoustics. Measurement of sound absorption properties of road surfaces in situ - Extended surface method1 Scope This part of ISO 13472 describes a test method for measuring in situ the sound absorption coefficient of road surfaces as a function of frequency in the range from 250 Hz to 4 kHz. Normal incidence is assumed. However, the test method can be applied at oblique incidence although with some limitations (see annex F). The test method is intended for the following applications: determination of the sound absorption properties of test tracks

BS 8580-1 applies to risk assessments being undertaken on-premises

are not provided in this document

maintenance support performance

which is the ratio of the mass of a given volume of rubber to the mass of an equal volume of pure water at a given temperature

whether stand-alone or as part of home and building electronic systems or building automation control systems (HBES/BACS) or similar

reinforcement(s) and finishing layer(s) with or without the mechanical fixing device(s)

The essential characteristics of metadata include: it is descriptive data

Note 2: BS EN 60966-2-1 should be supplemented with detailed specifications giving additional details as required by the application

managing such activities including policy and preparedness

the test method described in BS EN 14117 enables you to identify the most suitable coating products used for the protection or repair of concrete structures

A monitoring check is useful in identifying the defects of the circuits

This method is applicable to the following types of preparations or systems: