1. Pro Survey
  • Regional Survey
  • Investigation of Future Traffic Volume
  • Noise Survey
  • Plan Survey
2. Setting Goals
  • Establish Noise Standard
  • Consideration exterior view, structure stability and the others
3. Establishing Measures
  • Noise Analysis
  • Establish the size of Soundproofing facilities
  • Design of Soundproofing facilities
4. Evaluation
  • Post Noise measurement
  • Verify noise standard ( O.K or NG)
  • Follow Up measures

Design

dnf-1

Noise Barrier Tunnel for Highway

dnf-2

Noise Barrier

dnf-3

Noise Barrier Tunnel for Railway