Table
3.12 Noise Correction due to
Screening Effect for Assessed NSRs when Helicopter Operating at the Proposed
new helipad
|
NSR |
Approach |
Hovering |
Idling |
Take Off |
Remarks |
|
Flight Path:
Approach from the East and Takeoff to the West |
|||||
|
The Bauhinia
(N5) |
No correction due
to screening effect |
Totally screen by Shun Tak Centre; negative
correction of 10 dB(A) |
Totally screen by
Shun Tak Centre; negative correction of 10 dB(A) |
No correction due
to screening effect |
Measurement on
Harbour Commercial Building which have direct line of sight to the existing
helipad during all modes of helicopter operations. |
|
Ka On Building (N6) |
No correction |
Totally screen by Shun Tak Centre; negative
correction of 5 dB(A) |
Totally screen by
Shun Tak Centre; negative correction of 5 dB(A) |
No
correction |
Ka On Building could
not view the whole process of approach (from the east), hovering and idling
mode of helicopter at existing helipad during measurement due to partial
screen from Shun Tak Centre ; no correction for approach mode and negative
correction of 5 dB(A) for hovering & idling in the calculation. |
|
Talon Tower (N6a) |
No correction due
to screening effect |
No correction due
to screening effect |
No correction due
to screening effect |
No correction due
to screening effect |
- |
|
Flight Path:
Approach from the West and Takeoff to the East |
|||||
|
The Bauhinia (N5) |
No correction due
to screening effect |
Totally screen by
Shun Tak Centre; negative correction of 10 dB(A) |
Totally screen by
Shun Tak Centre; negative correction of 10 dB(A) |
No correction due
to screening effect |
Measurement on
Harbour Commercial Building which have direct line of sight to the existing
helipad during all modes of helicopter operations. |
|
Ka On Building (N6) |
No correction due
to screening effect |
Totally screen by
Shun Tak Centre; negative correction of 5 dB(A) |
Totally screen by
Shun Tak Centre; negative correction of 5 dB(A) |
No correction |
Ka On Building could not view the
whole process of idling, hovering and take off (to the East) due to partial
screen by Shun Tak Centre during measurement, no correction for measured
noise level for take off mode and negative correction of 5 dB(A) for hovering
& idling in the calculation. |
|
Talon Tower (N6a) |
No correction due
to screening effect |
No correction due
to screening effect |
No correction due
to screening effect |
No correction due
to screening effect |
- |