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| Determine
the Acceptable Noise Level (ANL) |
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|
- Sensitivity of Noise Sensitive Receiver (NSR) |
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| - NSR window
type |
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ANL
dB(A) |
| Determine
the total Sound Power Level |
| -
Piling method and pile type |
|
No. of unit |
| |
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Total
Sound Power
Level
dB(A) |
|
Determine
the Corrected Noise Level (CNL) at the NSR
|
| - Distance
between the NSR and the pile location nearest to the NSR
|
m
|
| -
Effect of barrier / screening |
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| - Will the noise level be increased due to the
confined or reverberant nature of the immediate locality
of the construction site or the NSR |
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|
CNL at
nearest NSR
dB(A) |
| CNL
- ANL = |
dB(A)
|
The
permitted hours of piling operation under a Construction Noise
Permit shall depend on the piling method and the value of
(CNL-ANL). See table on permitted hours of operation |
| Note:
All calculations above are for quick reference only. The issuance
of the Construction Noise Permit shall be subject to the result
of a thorough technical assessment in accordance with the procedures in
the relevant Technical Memorandum. |
