What is the acceptable outdoor noise level for industrial areas, as per the IS-code 4954-1968?

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Question

This question was previously asked in

JKSSB JE CE 2021 Official Paper Shift 2 (Held on 29 Oct 2021)

Answer 1

Concept:

IS:4954-1968:- Recommendations for Noise Abatement in Town Planning

The acceptable noise levels for outdoor and indoor levels in different types of residential areas is given in below table:

Acceptable outdoor noise levels in residential areas
S.No.	Location	Noise level dB
1	Rural	25-35
2	Suburban	30-40
3	Residential (Urban)	35-45
4	Urban (residential and business)	40-50
5	City	45-55
6	Industrial area	50-60

The acceptable noise levels for indoor levels in different types of residential areas is given in below table:

Acceptable Indoor noise levels for various types of buildings
S.No.	Location	Noise level dB
1	Radio & TV studio	25-30
2	Music room	30-35
3	Hospitals, classrooms, auditoria	35-40
4	Apartments, hotels, homes	35-40
4	Conference, rooms, small offices	35-40
5	Courtrooms, private offices, libraries	40-45
6	Large public offices, banks, stores, etc	45-50
7	Restaurants	50-55