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Assessment Tool - Percussive Piling

Percussive Piling
Determine the Acceptable Noise Level (ANL)

- Sensitivity of Noise Sensitive Receiver (NSR)
Normal NSR
Sensitive NSR
- NSR window type

NSR with windows or other openings but without central air conditioning system
NSR (or part of NSR) with no windows or other openings
NSR with central air conditioning system
ANL

dB(A)
Determine the total Sound Power Level
- Piling method and pile type No. of unit
 
 
 
 
 
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  
There is substantial barrier between NSR facade and all of the percussive piling
NSR is a building directly adjacent to the construction site such that none of the percussive piling will be visible from NSR

None  
-Will the noise level be increased due to the confined or reverberant nature of the immediate locality of the construction site or the NSR
Yes No
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 technical assessment in accordance with the procedures in the relevant Technical Memorandum.
 

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 Last Revision Date : 07 December 2007