| Appendix 4.3d Sound Power Level of Powered Mechanical Equipment for Various Construction Activities (With the Use of Quiet Equipment and Moveable Barrier) | |||||||||||||||||||
| Equipment | CNP / BS5228 | SWL, dB(A) | Mobilization & Establishment | Site Clearance | Piling (land-based) | Piling (sea-based) | Pile cap, bridge pier & abutment (land-based) | Pile cap, bridge pier & abutment (sea-based) | Bridge deck & parapet | Road construction (2 activities will be carried out simultaneously | Drainage and utilities (2 sections will be laid simultaneously) | Fill slopes reconstruction (2 slopes will be reconstructed simultaneously) | Cut slopes reconstruction (2 slopes will be stabilized simultaneously) | Reclamation (above sea level) | Retaining wall construction | Dredging | Rock filling | Sand filling | |
| Mobile crane | C.7-110 | 101* | 101 | 101 | 101 | 104 | 104 | 104 | |||||||||||
| Excavator | C.3-97 | 100* | 100 | 100 | 100 | 103 | 103 | 100 | 100 | ||||||||||
| Dump truck | C.9-29 | 109 | 109 | 109 | 109 | 112 | 112 | 112 | 112 | 109 | |||||||||
| Lorry | C.9-27 | 105 | 105 | 108 | 108 | ||||||||||||||
| Barge | 061 | 104 | 104 | 104 | 110 | 113 | |||||||||||||
| Crane | C.7-110 | 101* | 101 | 101 | |||||||||||||||
| Bored piling rig | 164 | 115 | 115 | 115 | |||||||||||||||
| Concrete pump truck | 047 | 104* | 104 | 104 | 104 | ||||||||||||||
| Vibratory poker | C.6-32 | 90* | 90 | 90 | 90 | 90 | 93 | 93 | 93 | 90 | |||||||||
| Vibratory roller | 186 | 103* | 106 | ||||||||||||||||
| Mobile diesel crane | C.7-110 | 101* | 101 | 101 | |||||||||||||||
| Bar bender/cutting | 021 | 90 | 90 | 90 | |||||||||||||||
| Concrete mixer truck | C.6-35 | 100 | 100 | 100 | 103 | 103 | 103 | 100 | |||||||||||
| Mobile crane/launching girder | C.7-110 | 101* | 101 | ||||||||||||||||
| Winch (pneumatic) | 261 | 105* | 105 | ||||||||||||||||
| Grader | C.9-11 | 105* | 108 | ||||||||||||||||
| Compactor | 050 | 95** | 98 | ||||||||||||||||
| Roller | C.8-27 | 99* | 99 | 102 | 99 | 99 | |||||||||||||
| Asphalt paver | C.8-24 | 101 | 104 | ||||||||||||||||
| Pneumatic types roller | 186 | 103* | 106 | ||||||||||||||||
| Drilling rig | 164 | 112 | 115 | ||||||||||||||||
| Air compressor (silenced) | 001 | 90** | 93 | ||||||||||||||||
| Grab dredger | 063 | 112 | 115 | 115 | 118 | ||||||||||||||
| Overall SWL | 110 | 110 | 115 | 116 | 111 | 110 | 110 | 115 | 114 | 115 | 116 | 112 | 111 | 116 | 115 | 119 | |||
| Note | * Barrier attenuation is -5dB(A) | ** Barrier attenuation is | |||||||||||||||||