Technical Booklet G Resistance to the Passage of Sound·Page 120·B3.2
Rounding in sound insulation calculations
No rounding should occur in calculations of sound insulation test results until required by the relevant BS EN ISO Standards.
When calculating sound insulation test results, no rounding should occur in any calculation until required by the relevant Standards, i.e. the BS EN ISO 140 series and the BS EN ISO 717 series.
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