Page 106 - GRIHA Manual Volume I - Introduction to National Rating System
P. 106
Criteria for GRIHA rating 93
Criterion 29 Acceptable outdoor and indoor noise levels
Objective
To use appropriate noise controls for providing acceptable levels of outdoor and indoor noise levels
to enhance comfort.
29. 1 Commitment
29.1.1 Ensure that the outdoor noise level conforms to the CPCB-Environmental Standards- Noise
(ambient standards).
29.1.2 Ensure that the indoor noise levels conform to the levels described in NBC 2005 (BIS 2005a).
29.2 Compliance
The following documents are to be submitted:
29.2.1 A sound audit report in the specifi ed format, on measured average ambient noise level at
site and indoor noise levels at diff erent locations inside the building. Noise measurement
should be conducted by an organization recognized by a competent authority and it should
follow procedures laid down by a competent authority (report to be submitted after the
building is occupied).
29.2.2 The building site plan duly signed by the architect/ applicant showing all the measures to
control outdoor noise.
29.2.3 The drawings and narratives showing measures as described in NBC 2005 (BIS 2005a), to
control indoor noise.
29.2.4 Cut sheets, specifi cation sheets, commercial brochures of sound absorbent materials and
bill of quantity demonstrating the use of sound absorbent materials in the building design.
29.3 Appraisal (maximum points – 2)
29. 3. 1 The outdoor noise levels are within the acceptable limits as set in CPCB-Environmental
Standards- Noise (ambient standards), as per clauses 29.2.1 and 29.2.2 (1 point).
29.3.2 The indoor noise levels are within the acceptable limits as set in NBC 2005 (BIS 2005a), as
per clauses 29.2.3- 29.2.5 (1 point).
Criterion 29 Acceptable outdoor and indoor noise levels
Objective
To use appropriate noise controls for providing acceptable levels of outdoor and indoor noise levels
to enhance comfort.
29. 1 Commitment
29.1.1 Ensure that the outdoor noise level conforms to the CPCB-Environmental Standards- Noise
(ambient standards).
29.1.2 Ensure that the indoor noise levels conform to the levels described in NBC 2005 (BIS 2005a).
29.2 Compliance
The following documents are to be submitted:
29.2.1 A sound audit report in the specifi ed format, on measured average ambient noise level at
site and indoor noise levels at diff erent locations inside the building. Noise measurement
should be conducted by an organization recognized by a competent authority and it should
follow procedures laid down by a competent authority (report to be submitted after the
building is occupied).
29.2.2 The building site plan duly signed by the architect/ applicant showing all the measures to
control outdoor noise.
29.2.3 The drawings and narratives showing measures as described in NBC 2005 (BIS 2005a), to
control indoor noise.
29.2.4 Cut sheets, specifi cation sheets, commercial brochures of sound absorbent materials and
bill of quantity demonstrating the use of sound absorbent materials in the building design.
29.3 Appraisal (maximum points – 2)
29. 3. 1 The outdoor noise levels are within the acceptable limits as set in CPCB-Environmental
Standards- Noise (ambient standards), as per clauses 29.2.1 and 29.2.2 (1 point).
29.3.2 The indoor noise levels are within the acceptable limits as set in NBC 2005 (BIS 2005a), as
per clauses 29.2.3- 29.2.5 (1 point).
