Transportation
- Traffic Noise Modeling (TNM)
- Railway Noise Modeling (CadnaA)
- 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 state of the art instrumentation and noise models developed and approved by the Federal Highway Administration. These models have been adopted by most state and local governments. Airport noise levels are determined using FAR Part 150 Guidelines for individual airports. These guidelines indicate noise impact zones from each airport and are produced on 5-year intervals. 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 highway, railway, and airports. Mitigation generally addresses both outdoor and indoor noise levels. While it is impractical to control outdoor noise from airports, noise levels in outdoor activity areas such as rear yards may need to meet certain standards established by local authorities. 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. This involves analysis of the exterior wall and window construction, the size of the windows, and the size and finish of the room.
Drawings and details of designs are produced in CAD.
This is especially helpful in determining the room feasibility for housing specifically vibration sensitive equipment.
