What noise reduction can I realistically expect from your 3m highway noise barrier?

Our 3.0m highway noise barrier achieves 15-25dB insertion loss (noise reduction), tested per ASTM E413 / ISO 10847. The actual reduction depends on: barrier height relative to the noise source-receiver line of sight, barrier length, and distance from the road. A 3m barrier typically provides: 5-8dB reduction for a ground-floor receiver 30m from the road, 8-12dB for a first-floor receiver at 50m, and 15-20dB for receivers within the "shadow zone" (no direct line of sight to the road). The composite panel construction (1.0mm perforated galvanized face + 80kg/m³ rock wool core + 1.2mm solid galvanized back) provides both sound absorption (NRC 0.85-0.95) and sound transmission loss (STC 30-35). For maximum performance, the barrier should extend at least 4× the distance past the protected area on both ends to prevent flanking noise.

What wind load can your noise barrier withstand and how are the foundations designed?

Our noise barrier is designed for wind loads per the applicable national code (typically 0.75-1.5 kN/m² depending on location). The H-beam posts (typically H200×200×8×12mm or equivalent) are embedded in concrete pile foundations (600-800mm diameter, depth per geotechnical report, typically 3-6m). Foundation design follows: (1) Soil bearing capacity from site investigation, (2) Overturning moment from wind × barrier height, (3) Deflection limit of H/100 at top of post. We provide full structural calculations stamped by registered engineers for permitting. For elevated structures (bridge-mounted barriers), we design bolt-on base plate connections with the bridge deck structural engineer. Post spacing: 2.0-3.0m standard. Panel-to-post connection uses galvanized steel brackets with EPDM rubber gaskets to prevent metal-to-metal vibration noise in high winds.

3m Highway Noise Barrier: How Much dB Reduction Can You Expect? (Test Data)

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Parameter	Value
Panel Height	3.0m
Panel Width	0.5m (standard)
Panel Thickness	100mm
Outer Skin	0.8mm perforated galvanized steel
Core	50mm mineral wool, 80 kg/m3
Inner Skin	0.6mm solid galvanized steel
NRC	0.85
STC	32
Insertion Loss	10-15 dB(A)
Fire Rating	A1 (non-combustible)
Post Type	H-section steel 100x100x6x8
Post Spacing	2.0m
Wind Load	0.8 kPa design
Zinc Coating	>=120g/m2
Standard	GB/T 19889, ISO 717

SKU: highway-noise-barrier-3m

Highway Noise Barrier 3.0m Sound-Absorbing Steel Panel

3.0m highway sound-absorbing noise barrier, achieving 25-35dB reduction for residential community protection. Perforated steel panel with mineral wool core; meets GB/T 19884 and EN 1793 standards.

Specifications

Highway Noise Barrier 3.0m Sound-Absorbing Steel Panel Technical Specifications
Panel Height	3.0m
Panel Width	0.5m
Panel Thickness	100mm
Outer Skin	0.8mm perforated galvanized steel
Core	50mm mineral wool, 80 kg/m3
Inner Skin	0.6mm solid galvanized steel
NRC	0.85
STC	32
Insertion Loss	10-15 dB(A)
Fire Rating	A1 (non-combustible)
Post Type	H-section 100x100x6x8
Post Spacing	2.0m
Wind Load	0.8 kPa
Standard	GB/T 19889, ISO 717
MOQ	100 pieces