Transportation
- Traffic Noise Modeling (TNM)
- Railway Noise Modeling
- Noise barrier design
- Building shell noise analysis
- HUD analysis
- Local and state building codes
Transportation noise analysis begins with determination of the noise level at a particular site. The noise levels from a particular source are generally determined using either on-site measurement or computerized noise modeling. For future noise levels from roadways, the engineer will use a combination of methods to determine the impact. Phoenix NV uses the most up to date instrumentation and noise models developed and approved by the Federal Highway Administration. Airport noise levels are determined using FAR Part 150 Guidelines for individual airports. Railway noise is usually determined using either on-site noise measurements or modeled using the state of the art CadnaA noise propagation model. Only after accurate and precise noise level determination can appropriate noise mitigation design be carried out.
Phoenix NV designs noise control systems for transportation noise sources including highways, railways, and airports. Mitigation generally addresses both outdoor and indoor noise levels. Mitigation comes through site planning, building layout, and barrier design. For all transportation noise sources, interior noise levels are determined by conducting a "building shell noise analysis."
Ground vibration from highways and railways can also negativly impact existing or proposed structures. Ground vibration can be measured directly and compared to industry standards for compliance according to the building use.
-Thomas J. Aylward III, AIA, Jackson Shaw