Appendix G — Checklist for Acoustical Planning, Design and Post-occupancy Assessments
Gazette pages 4967–4969 · Official gazette pages (PDF, 188 KB) — use for exact tables and figures.
Form G: Checklist - Acoustical Planning, Design and Post-occupancy Assessments
Instructions:
a) A separate form should be filled in for each space/room/building
b) Fill in with text or put tick mark, as applicable
c) After filling in and signing Expected Result in Planning Design Phase, submit the form to the project owner/ client
d) A photocopy of the submitted Form (as mentioned above) shall be filled in and signed for Post- occupancy Findings
1. Name of the space/room/building for Acoustical Planning and Design: ….....................
2. Project name : ……………………………...………………………...…………….……
3. Location : .......…………………………………………………………………………...
4. Owner/Client : ..........……………………………………………………………………
5. Lead Consultant : ……………………………………………………………………….
6. Acoustical Consultant : …………………………………....……………………………
7. Type of acoustics involved in the space: Speech Music Multipurpose
8. Noise Survey on Site and Surroundings: Conducted Not Conducted
9. Noise Map: Prepared Not prepared
10. Design Parameters of the Space/Room/ Building: Sl. No. Design Parameters Expected Results Post-occupancy Findings in Planning and Design Phase
a) Method Adopted: Assumptions Instrumental Survey
Only Manual Calculations Opinion Survey
Computational Analysis, Both of above Simulation and Prediction
b) Ambient/Background
level: i) L10
i) ............... dBA i) ............... dBA
ii) Leq ii) ............... dBA ii) ............... dBA
c) Reverberation Time: i) At 1 kHz
ii) Average of all
i) ............... s i) ............... s
applicable
frequencies ii) ............... s ii) ............... s
Sl. No. Design Parameters Expected Results Post-occupancy Findings in Planning and Design Phase
d) Sound level in audience
area (Average) ................ dBA ................ dBA
e) Diffusion in audience
area - Difference
between max. and min.
sound level: ................ dBA ................ dBA
f) Signal-to-Noise Ratio
(SNR) ................ dBA ................ dBA
g) Intelligibility:
i) PSA i) .............. % i) .............. %
ii) AI ii) ............... % ii) .............. %
iii) STI iii) .............. % iii) .............. %
h) Reverberance: Live Live
Based on average Average Average absorption coefficient Dead Dead : <0.2 = Live, 0.2 - 0.4 = Average, >0.4 = Dead
i) Speech Privacy
Rating: .................... .....................
J) Overall quality Excellent Good Excellent Good
(perceptual
Average Poor Average Poor
evaluation):
Signature of the Acoustical ............................................... ............................................... Consultant: Date: ..................................... Date: .....................................
Source: Bangladesh National Building Code 2020, S.R.O. No. 55-Law/2020, Bangladesh Gazette (Extraordinary), 11 February 2021. Tables, figures and equations: refer to the linked gazette pages.