2. Planning foundations
 

 

2.4.4     Noise measurements

2.4.4.1  The significance of noise measurements

Although noise emission and immission, especially in the case of traffic noise, are calculated whenever possible (see chapter 3), noise measurements still are and will be relevant and regulated in particular ordinances and regulations. Table 2/1 gives a summary of the way noise pollution is to be determined according to the current state of the relevant regulations and directives.

The determination of noise pollution through measurements is used among other things to assess noise in individual cases (e.g. after complaints), to determine noise emissions from sound sources (e.g. lawn mowers, building machines (according to DIN 45635, enveloping surface method, figures 2/11b and 2/11c) as well as to assess noise abatement measures (e.g. 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 components.

Source of noise Method Relevant regulation
Road traffic Calculation 16th Federal Immission Control Ordinance, RLS-90, DIN 18005-1
Road traffic Measurement DIN 45642
Railway traffic Calculation 16th Federal Immission Control Ordinance, Schall 03,
Akustik 04
Air traffic Calculation AzB (Anleitung zur Berechnung, Instructions how to calculate) according to the Air Traffic Noise Act (Fluglärmgesetz), Airport Air Traffic Noise Guideline (Flughafen-Fluglärmleitlinie), Landing field Air Traffic Noise Guideline (Landeplatz-Fluglärmleitlinie)
Air traffic Measurement DIN 45643-2 (Aircraft noise monitoring systems within the meaning of article 19a of the Civil Aviation Act (Luftverkehrsgesetz))
Air traffic Measurement DIN 45643-3 (Determination of rating level of aircraft noise exposure)
Commerce Measurement TA Lärm (Technical Instructions on Noise)
Commerce Calculation DIN ISO 9613-2, VDI 2571
Building sites Measurement AVV Baulärm, Geräuschimmissionen (General administrative regulation for building noise)
Spare time activities Measurement Recommendations by the Federal States’ Immission Control Committee (Länderausschuss für Immissionsschutz, LAI), VDI 3724 (draft)
Sports facilities Measurement Ordinance on the Prevention of Noise from Sports Facilities (Sportanlagenlärmschutzverordnung, 18th Federal Immission Control Ordinance)
Water traffic Calculation
Measurement		 DIN18005-1
DIN 45642
 
Table 2/1: Summary of the type of noise determination from different noise sources required by the relevant regulations

Measurements for official interests may only be carried out by technically qualified persons or institutions. According to § 26 of the Federal Immission Control Act, recognized measurement agencies for emission and immission determination are designated by the authority responsible pursuant to Land law through the announcement of the authority. These agencies must provide skilled personnel and the required technical equipment.
 

 

 

 

Fig. 2/11b: Enveloping surface method, hemisphere method
 

Fig. 2/11c: Enveloping surface methode, five side method
           
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