Acoustic Barrier Attenuation: masonry_wall
Sound barrier insertion loss and noise reduction data for highway, industrial, and residential acoustic barriers — concrete, masonry, earth berm, metal, timber, acrylic, absorptive, jersey barrier, and composite types. Includes STC rating, octave-band transmission loss (125–4000 Hz), insertion loss at Fresnel numbers 5 and 10, NRC, lifespan, and installed cost per FHWA-HEP-10-025, ISO 9613-2, and Bies & Hansen Engineering Noise Control.
| barrier type | material | Fresnel number method | STC rating (dimensionless) | TL 1000Hz dB (dB) | TL 125Hz dB (dB) | TL 2000Hz dB (dB) | TL 250Hz dB (dB) | TL 4000Hz dB (dB) | TL 500Hz dB (dB) | barrier height ft (ft) | cost per sf installed (USD/sf) | expected lifespan years (years) | insertion loss dB at 10dB Fresnel (dB) | insertion loss dB at 5dB Fresnel (dB) | surface density lb per ft2 (lb/ft2) | weather resistance |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| masonry_wall | Brick (230mm; 440 kg/m2) | yes | 52 | 50 | 33 | 53 | 38 | 55 | 44 | 10 | 36 | 50 | 11 | 5 | 90 | excellent |
| masonry_wall | Concrete masonry unit CMU (150mm; partially grouted; 120 kg/m2) | yes | 38 | 38 | 24 | 42 | 29 | 44 | 34 | 8 | 17 | 50 | 9 | 5 | 25 | excellent |
| masonry_wall | Concrete masonry unit CMU (200mm; 151 kg/m2; ungrouted) | yes | 42 | 40 | 24 | 44 | 30 | 47 | 36 | 8 | 20 | 50 | 9 | 5 | 31 | excellent |
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