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New Zealand Standard 6803

In New Zealand, noise from most construction and maintenance, including roads, is managed in accordance with New Zealand Standard NZS 6803:1999 ‘Acoustics – Construction Noise’. The Transport Agency manages and minimises potentially unreasonable noise effects during state highway construction and maintenance, so far as is practicable, in accordance with this standard.

NZS 6803 provides the following guideline noise limits for construction and maintenance works. These limits apply outside neighbouring buildings; one metre from the façades and 1.2 to 1.5 metres above the relevant floor level.

Time of week

Time period

Duration of works at a location

less than 14 days

less than 20 weeks

more than 20 weeks

LAeq(t)

LAFmax

LAeq(t)

LAFmax

LAeq(t)

LAFmax

Noise limits at residential neighbours

Weekdays

0630-0730

65 dB

75 dB

60 dB

75 dB

55 dB

75 dB

0730-1800

80 dB

95 dB

75 dB

90 dB

70 dB

85 dB

1800-2000

75 dB

90 dB

70 dB

85 dB

65 dB

80 dB

2000-0630

45 dB

75 dB

45 dB

75 dB

45 dB

75 dB

Saturdays

0630-0730

45 dB

75 dB

45 dB

75 dB

45 dB

75 dB

0730-1800

80 dB

95 dB

75 dB

90 dB

70 dB

85 dB

1800-2000

45 dB

75 dB

45 dB

75 dB

45 dB

75 dB

2000-0630

45 dB

75 dB

45 dB

75 dB

45 dB

75 dB

Sundays and public holidays

0630-0730

45 dB

75 dB

45 dB

75 dB

45 dB

75 dB

0730-1800

55 dB

85 dB

55 dB

85 dB

55 dB

85 dB

1800-2000

45 dB

75 dB

45 dB

75 dB

45 dB

75 dB

2000-0630

45 dB

75 dB

45 dB

75 dB

45 dB

75 dB

Noise limits at commercial/industrial neighbours

 

0730-1800

80 dB

-

75 dB

-

70 dB

-

 

1800-0730

85 dB

-

80 dB

-

75 dB

-

For each time period there are two noise limits: an average (LAeq(t)) and a maximum (LAFmax) [acoustics terms]. For typical daytime construction lasting less than 20 weeks, the guideline limits are 75 dB LAeq(t) and 90 dB LAFmax. The LAeq(t) noise limits for works lasting less than 20 weeks are also shown on the following graph.

During the day, most people tolerate higher noise levels from temporary activities, compared to permanent activities. Therefore the guideline limits for temporary work are higher. However, at night the limits are similar to those for permanent activities, to prevent sleep disturbance.

The State highway construction and maintenance noise and vibration guide contains information about the implementation of this standard.

For further information contact environment@nzta.govt.nz.

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