Lärmfibel

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	Preface
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	1.	Introduction
	2.	Planning foundations
	2.1	General legal foundations
	2.1.1	Pollution control rights
	2.1.2	Building law
	2.1.3	Civil Code, Criminal Code and Administrative Offences Act
	2.2	The physical terms "sound" and "noise"
	2.3	Noise, sound emission and sound immission
	2.4	Acoustic principles
	2.4.1	The sound scale
	2.4.2	Calculation rules
	2.4.3	Definitions of further terms
	2.4.4	Noise measurements
	2.4.4.1	The relevance of noise measurements
	2.4.4.2	The realization of measurements
	2.4.4.3	The measurement devices
	2.5	The effect of noise protection constructions
	2.6	Summary of noise assessment values based on immission values
	3.	Traffic noise
	4.	Industrial noise
	5.	Noise from sports and leisure facilities
	6.	Noise abatement plans / Noise action plans
	7.	Planning indications
	8.	Bibliography
	9.	Thematic Websites
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PLANNING FOUNDATIONS

2.4.4.1 The relevance of noise measurements

Whenever possible, noise emissions and immissions are calculated, especially in the case of traffic noise (see chapter 3), but noise measurements are still permitted in particular ordinances and regulations.

The determination of noise pollution through measurements is used among others to assess noise in individual cases (e.g. after complaints), to determine noise emissions from particular sound sources (e.g. lawn mowers, building machines according to the enveloping surface method) as well as to assess noise abatement measures (e.g. the installation of soundproof windows).

Furthermore, it is necessary to carry out measurements in the case of complex noise structures which cannot be calculated. Another context for noise measurements is noises with discrete or impulsive components.

Noise source	Method	Applicable regulation
Road traffic	Calculation	16th Federal Immission Control Ordinance (16. BImSchV), RLS-90, DIN 18005-1
Road traffic	Calculation	DIN 45642
Rail traffic	Calculation	16th Federal Immission Control Ordinance (16. BImSchV), Akustik 04
Air traffic	Calculation	Ordinance on Data Acquisition and the Method of Calculation for the Designation of Noise Protection Areas (1st FlugLSV)
Air traffic	Calculation	Ordinance on Airport Noise Protection Measures (2nd FlugLSV)
Air traffic	Messung	DIN 45643
Water traffic	Calculation	DIN18005-1
Water traffic	Measurement	DIN 45642
Industry	Measurement	Technical Instructions on Noise (TA Lärm)
Industry	Calculation	DIN ISO 9613-2, VDI 2571 (withdrawn, but still referred to in TA Lärm), DIN EN 12354-1/-4
Building sites	Measurement	General administrative regulation for building noise (AVV Baulärm, Geräuschimmissionen)
Leisure activities	Measurement	Guideline for Leisure Noise (Annex B to the model administrative regulation on the determination, assessment and reduction of noise immissions, LAI, 1995)
Leisure activities	Calculation	VDI 3770
Sports facilities	Measurement	18th Federal Immission Control Ordinance (18. BImSchV)
Sports facilities	Calculation	VDI 3770

Table 2/1: Summary of the type of noise determination from different noise sources required by the relevant regulations

Measurements for official purposes may only be carried out by technically qualified persons or institutions, preferably recognized measuring agencies as prescribed in § 26 of the Federal Immission Control Act (BImSchG). These are authorized by the highest responsible Land authority (in Baden-Württemberg: Environment Ministry, 2008). The agencies must provide skilled personnel and the required technical equipment. The latest index of recognized measuring agencies can be found at www.resymesa.de.