ASA S12.62 2012
$47.67
ANSI/ASA S12.62-2012 / ISO 9613-2:1996 (MOD) (R2017) American National Standard Acoustics -Attenuation of sound during propagation outdoors – Part 2: General method of calculation (a modified nationally adopted international standard)
| Published By | Publication Date | Number of Pages |
| ASA | 2012 | 38 |
None
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 11 | 1 Scope |
| 12 | 2 Normative references 3 Definitions |
| 14 | 4 Source description 5 Meteorological conditions |
| 15 | 6 Basic equations |
| 16 | 7 Calculation of the attenuation terms 7.1 Geometrical divergence (Adiv 7.2 Atmospheric absorption (Aatm |
| 17 | 7.3 Ground effect (Agr |
| 18 | Figures Figure 1 – Three distinct regions for determination of ground attenuation |
| 20 | Figure 2 – Functions a’, b’, c’ and d’ representing the influence of the source-to-receiver distance dp and the source or receiver height h, respectively, on the ground attenuation Agr (computed from equations in table 3 |
| 21 | 7.4 Screening (Abar Figure 3 – Method for evaluating the mean height hm |
| 22 | Figure 4 – Plan view of two obstacles between the source (S) and the receiver (R |
| 23 | Figure 5 – Different sound propagation paths at a barrier |
| 24 | Figure 6 – Geometrical quantities for determining the pathlength difference for single diffraction |
| 27 | 7.5 Reflections |
| 29 | 8 Meteorological correction (Cmet |
| 31 | 9 Accuracy and limitations of the method |
| 33 | Annex A (informative) Additional types of attenuation (Amisc A.1 Foliage (Afol |
| 34 | A.2 Industrial sites (Asite A.3 Housing (Ahous |
| 36 | Bibliography |
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