The aim of this advisor is to familiarize street designers with the complicated challenge of road site visitors noise. A road clothier needs to do greater than purely gather and review noise facts. they have to additionally assessment possible noise degrees and the effectiveness of decreasing road site visitors noise via place and layout good points and arrive at a cheap option to the matter.
Content:
entrance topic
• desk of Contents
1. advent
2. Nature of Noise
three. A structures procedure
four. street Noise research
five. Attenuation Measures
6. Noise Barrier layout issues
• 7. Terminology
• eight. References
Read or Download Guide on Evaluation and Abatement of Traffic Noise PDF
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Additional info for Guide on Evaluation and Abatement of Traffic Noise
Example text
Even if it is not possible to remedy the problem, analysis of the reasons that the barrier does not achieve its design noise reduction would provide a useful lesson which could be of great benefit in the design of future barriers. 2 Acoustical Considerations The attenuation of a barrier is directly related to the path length difference of the diffracted sound over the top of the barrier as compared with the direct path from the source to receiver in the absence of the barrier. How do these concepts influence the practical design of a barrier?
In general, barrier concepts utilizing extensive landscaping are the most visually pleasing of any type of wall. Walls should reflect the character of their surroundings as much as possible. Where strong architectural elements occur in close proximity to wall locations, explore a relationship of material, texture, and color. In other areas, particularly those closely related to freeway structures or other transportation elements, barriers should have a strong visual relationship, either physically or by design concept, to the highway elements.
30 Guide on Evaluation and Abatement of Traffic Noise Just as it is important to measure existing levels at receiver locations before construction of the barrier, it is useful to make measurements after barrier construction to document actual barrier performance. If the barrier has met its design goal, these measurements are useful from a community relations point of view. If the design has not been successful, it is important to recognize that fact so th;, if possible, the problem can be remedied.