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MSS SP-134-2025: Valves for Cryogenic Service, including Requirements for Body/Bonnet Extensions

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315

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MSS SP-150-2025: Valves for Use in Hydrogen Peroxide Service

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189

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API STD 673: Centrifugal Fans for Petroleum, Chemical and Gas Industry Services: Edition 3

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300

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API STD 674: Positive Displacement Pumps-Reciprocating: 3rd Edition

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API MPMS CH 22.3: Testing Protocol for Flare Gas Metering: Edition 2

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193

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API STD 674: Errata 3

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MSS SP-100-2025: Qualification Requirements for Elastomer Diaphragms for Nuclear Service Diaphragm Valves

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MSS SP-163-2025: Cable Suspension of Pipe – Materials, Selection, Application, and Installation

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API RP 2510A: Fire-Protection Considerations for the Design and Operation of Liquefied Petroleum Gas

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ISO 13472:2022

ISO 13472:2022 Acoustics – Measurement of sound absorption properties of road surfaces in situ – Part 1: Extended surface method

CDN $273.00

Description

This document 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 road surfaces in actual use;

-    comparison of sound absorption design specifications of road surfaces with actual performance data of the surface after completion of the construction work.

The complex reflection factor can also be determined by this method.

Edition

2

Published Date

2022-01-05

Status

PUBLISHED

Pages

29

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

This document 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 road surfaces in actual use;

-    comparison of sound absorption design specifications of road surfaces with actual performance data of the surface after completion of the construction work.

The complex reflection factor can also be determined by this method.

Previous Editions

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