Noise Control In Highway Construction
Big Dig
Study Objectives
Noise In Highway Construction
Noise Exposure Evaluation Methods
Targeted Sources
Drilling Rig
Air Compressor
Power Tool Tying Rebars
Short-term Noise Levels
Octave Band Spectra
Noise Control
Hearing Protectors
Noise Reduction Rating (NRR)
Required NRR (dB)
Assessment of Noise Levels: Existing methods
Administrative Controls
Calculating a Noise Perimeter Zone
Table #1. Converting Sound Pressure Measurement to Sound Power Level (dB)
Sound Power Level
Table #2. Calculating Noise Perimeter Zone from Sound Power Measurement
Table #3. Maximum Exposure Time Within a Noise Perimeter Zone
Engineering Controls
Noise Control in Highway Construction
References - Noise Exposures In Construction Workers
Email: jmyers@aiha.org
Home Page: http://www.aiha.org
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