Obstruction | Additional Loss (dB) | Effective Range |
|---|
Open space | 0 | 100% |
Window (nonmetallic tint) | 3 | 70% |
Window (metallic tint) | 5–8 | 50% |
Light wall (drywall) | 5–8 | 50% |
Medium wall (wood) | 10 | 30% |
Heavy wall (15 cm solid core) | 15–20 | 15% |
Very heavy wall (30 cm solid core) | 20–25 | 10% |
Floor/ceiling (solid core) | 15–20 | 15% |
Floor/ceiling (heavy solid core) | 20–25 | 10% |
