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Standard Test Method for Field Measurement of Tapping Machine Impact Sound Transmission Through Floor-Ceiling Assemblies and Associated Support Structures (Includes all amendments And changes 10/29/2013).
Automaticky preložený názov:
Štandardná skúšobná metóda pre zorné pole pre meranie Tapping Machine dopadov prenosu hluku Floor - Stropné zhromaždeniach a Associated podporných štruktúr
NORMA vydaná dňa 1.10.2013
Označenie normy: ASTM E1007-13a
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.10.2013
Kód tovaru: NS-40115
Počet strán: 12
Približná hmotnosť: 36 g (0.08 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
absorption normalized impact sound pressure level, apparent impact insulation class, impact sound insulation, impact sound pressure level, impact sound rating, normalized impact sound rating, reverberation time normalized impact sound pressure level, tapping machine, ICS Number Code 91.120.20 (Acoustics in buildings. Sound insulation)
Significance and Use | ||||||||||||||||||||||||||||
5.1 The spectrum of the noise produced in the receiving room by the standard tapping machine is determined by (1) the size and the mechanical properties of the floor-ceiling assembly, such as its weight, surface properties, mounting or edge restraints, stiffness, and internal damping; (2) the degree of flanking transmission through associated structures; and 5.2 The standardized tapping machine specified in 5.3 Laboratory Test Method E492 calls for highly diffuse sound fields and the suppression of flanking sound transmission in the laboratory’s receiving room. This field test method does not allow efforts to suppress flanking. In field tests, acoustical measurements are much more uncertain than in the laboratory since a great variety of receiving room shapes and sizes are encountered in ordinary buildings. Highly diffuse fields are seldom found and the nature of structure-borne flanking transmission can vary widely. In addition, energy can be transmitted laterally away from the receiving room. The amount of lateral transmission of energy can vary significantly between buildings. Consequently, good agreement between laboratory tests and field tests on similar floor-ceiling assemblies should not be expected. 5.4 Several metrics are available for specific uses: 5.4.1 absorption normalized
impact sound pressure level (ANISPL) and apparent impact insulation
class (AIIC)—These metrics are intended to evaluate the
performance of the floor-ceiling assembly and adjacent structures
as installed (including structure-borne flanking paths). For these
metrics, sound power from associated support structures are
attributed to the floor-ceiling assembly. Because these are
measures of the apparent performance of the nominally separating
floor-ceiling, the receiving room shall be the space directly under
the tapping machine. ANISPL and AIIC may be reported if the
receiving room has a volume of at least 40 m3 and the
smallest dimension is at least 2.3 m. In rooms of 150 m3
or greater ANISPL and AIIC shall not be determined and reported
unless, in all frequency bands necessary to calculate the AIIC, the
receiving room absorption, A2, is less than:
Results are usually not identical to laboratory tests of the floor-ceiling assembly alone. Because of the uncontrollable factors mentioned in 5.4.2 impact sound pressure level (ISPL) and impact sound rating (ISR)—These metrics are intended to assess the impact sound isolation as it exists at the time of the test due to the mechanical excitation of the floor-ceiling assembly by the standard tapping machine. The measurements can be performed in any space affected by the sound of the operating tapping machine. These metrics do not represent the performance of the separating floor-ceiling. They represent the impact sound isolation between the source floor and the receiving room. There are no receiving room absorption restrictions and no receiving room volume restrictions other than being sufficiently large to accommodate the microphone positions described in 11.3. 5.4.3 reverberation time normalized impact sound pressure level (RTNISPL) and normalized impact sound rating (NISR)—These metrics are intended to assess the impact sound isolation as if the receiving room had a reverberation time of 0.5 s. This reverberation time is typical of many furnished small offices and furnished residential living rooms and bedrooms. RTNISPL and NISR shall not be reported for receiving rooms of 150 m3 or larger. |
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1. Scope | ||||||||||||||||||||||||||||
1.1 This test method covers the measurement of the transmission of impact sound generated by a standard tapping machine through floor-ceiling assemblies and associated supporting structures in field situations. 1.2 Measurements may be conducted on all types of floor-ceiling assemblies, including those with floating-floor or suspended ceiling elements, or both, and floor-ceiling assemblies surfaced with any type of floor-surfacing or floor-covering materials. 1.3 This test method defines several procedures and metrics to assess either the apparent performance of the nominally separating floor-ceiling or the isolation of a receiving room from the sound produced by the operation of the tapping machine. The receiving room may be the space directly below the tapping machine or, in some cases, any separated space that receives sound from the operation of the tapping machine. The source and receiving rooms as well as the floor-ceiling system are identified and described in the test report. All measured levels and derivative single number ratings include the effect of flanking transmission. Efforts to suppress flanking are not permitted. Available measures and their single number ratings are the impact sound pressure levels (ISPL) and impact sound rating (ISR), the reverberation time normalized impact sound pressure levels (RTNISPL) and normalized impact sound rating (NISR), and the absorption normalized impact sound pressure levels (ANISPL) and apparent impact insulation class (AIIC). 1.4 The ISPL and ISR may be measured and reported between any two specific rooms or usage areas where the source room area is large enough to accommodate the tapping machine positions and the receiving room volume is sufficiently large to accommodate the microphone positions. For all other measures and ratings in this standard, restrictions such as minimum room volume or dimensions or maximum room absorption are imposed. Thus, conditions may exist that will not allow RTNISPL (NISR) or ANISPL (AIIC) to be measured. 1.5 Where a separating floor-ceiling assembly is composed of parts that are constructed differently on the receiving room (ceiling) side, it is not possible to measure the ANISPL and AIIC of the individual elements or portions of the assembly. In this situation, the measurement will be of the composite structure, not of an individual element. 1.6 Any single field measurement only represents the actual assembly tested and cannot be used alone to accurately predict how a similar assembly might perform. 1.7 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.8 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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2. Referenced Documents | ||||||||||||||||||||||||||||
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