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GB/T 8485-2008The graduation and test for airborne sound insulating properties of windows and doors (English PDF)

建筑门窗空气声隔声性能分级及检测方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

July 30, 2008

Implementation date

March 1, 2009

Scope

GB/T 8485-2008 is the English-translated version of 建筑门窗空气声隔声性能分级及检测方法.

GB/T 8485-2008 is the Chinese standard "The graduation and test for airborne sound insulating properties of windows and doors". Its scope clause reads: This standard specifies the doors and windows of airborne sound insulation performance classification, test methods and test reports.

This standard applies to doors and windows of airborne sound insulation performance rating and testing. Other acoustic requirements can refer to the use of windows and doors. Its clauses include terms and definitions.

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Document preview — GB/T 8485-2008

National Standard of the People's Republic of China

ICS
91.060.50
Classification
P 32
Replacing
GB/T 16730-1997

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

  • Foreword
  • 1 Scope
  • 2 Normative references
  • 3 Terms and definitions

1 Scope

This standard specifies the doors and windows of airborne sound insulation performance classification, test methods and test reports.

This standard applies to doors and windows of airborne sound insulation performance rating and testing. Other acoustic requirements can refer to the use of windows and doors.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard. However, according to research encourages the parties to the agreement

Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 3947 Acoustics Terminology

GB/T 5823 building windows and doors term

GB/T 15173-1994 acoustic calibrator (eqv IEC 60942. 1988)

GB/T 19889.1 Acoustics Measurement of sound insulation buildings and building elements - Part 1. suppressed flanking transmission of laboratory testing facility

Requirements (GB/T 19889.1-2005, ISO 140-1, IDT)

GB/T 19889.3-2005 Acoustics Measurement of sound insulation buildings and building elements - Part 3. airborne sound insulation of building elements experiment

Chamber measurements (ISO 140-3, IDT)

GB/T 50121 construction noise evaluation criteria

3 Terms and Definitions

The term and the following terms and definitions GB/T 3947 and GB/T 5823 established in this standard applies.

3.1

Sound power transmitted through the specimen and the ratio of incident to incident acoustic power of the specimen on the formula (1).

tau = WtauWi (1)

Where.

Wtau --- transmitted through the specimen sound power in watts (W);

Wi --- sound power incident on the incident on the specimen, in watts (W).

3.2

Sound power incident on the specimen and the transmission ratio of the transmission power of the sound specimens, taking the logarithm of base 10 multiplied by 10 decibels (dB).

Sound insulation and sound transmission coefficient tau R has the following relationship.

R = 10lg1tau (2)

tau = 10-R/10 (3) […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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Editions of GB/T 8485

EditionTitleRevisionStatus
GB/T 8485-2008The graduation and test for airborne sound insulating properties of windows and doorscurrent editionCurrent
GB/T 16730-1997The graduation and test for airborne sound insulating properties of windows and doorsprevious editionSuperseded

This page sells the current edition, GB/T 8485-2008. Earlier editions are listed for reference only.

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