W-Beam Crash Barriers
Single Beam & Double Beam Highway Guardrail Systems
TMR Traffic Safety manufactures premium W-beam crash barriers that set the standard for highway safety in India. Our single beam barriers and double beam barriers provide reliable protection for highways, bridges, and urban roads while meeting stringent MORTH and IS 17090 requirements.
Whether you need highway guardrail for NHAI projects, state highway improvements, or urban infrastructure, our W-beam systems deliver exceptional performance with 550 g/m² galvanizing for decades of corrosion resistance.
W-Beam Crash Barrier Specifications
IS 17090 compliant technical specifications for W-beam highway guardrail systems
Material Specifications
| Property | Requirement | Standard |
|---|---|---|
| Steel Grade | E250 / E350 | IS 2062 |
| Tensile Strength | 410-580 MPa | IS 2062 |
| Yield Strength | ≥ 250 MPa | IS 2062 |
| Elongation | ≥ 23% | IS 2062 |
Dimensional Specifications
| Dimension | Standard Value | Tolerance |
|---|---|---|
| Section Width | 310 mm | ± 2 mm |
| Section Height | 83 mm | ± 2 mm |
| Wave Length | 100 mm | ± 1 mm |
| Radius of Curvature | 26 mm | ± 1 mm |
| Steel Thickness | 3.0 mm / 4.0 mm | ± 0.2 mm |
Coating Specifications
| Parameter | Value | Test Method |
|---|---|---|
| Zinc Coating | 550 g/m² minimum | IS 2629 |
| Coating Thickness | 80 microns | IS 2629 |
| Adhesion | No peeling | IS 2629 |
| Uniformity | 3+ dips in Preece test | IS 2633 |
Post Specifications
| Post Type | Section | Length | Application |
|---|---|---|---|
| I-Beam | 150×75 mm | 1.5 m – 2.5 m | Standard installations |
| C-Channel | 150×75 mm | 1.5 m – 2.5 m | Median barriers |
| Sigma | 135×55 mm | 1.5 m – 2.0 m | Cost-effective option |
W-Beam Barrier Components
A complete highway guardrail system consists of multiple engineered components working together
W-Beam Rails
The primary energy-absorbing element, manufactured in standard 4.32-meter lengths for efficient transportation and installation.
Posts (I-Beam / C-Channel / Sigma)
Vertical support elements that anchor the barrier to the ground. Post spacing typically ranges from 2.0 to 4.0 meters depending on containment requirements.
Spacers
Blockout spacers maintain the required offset between the rail and post, ensuring proper vehicle interaction during impact.
Fasteners
High-strength bolts, nuts, and washers connecting rails to posts with proper galvanizing for corrosion resistance.
Spacer Types
| Spacer Type | Material | Size | Application |
|---|---|---|---|
| Wooden Spacer | Hardwood | 150×200×300 mm | Standard use |
| Composite Spacer | Recycled plastic | 150×200×300 mm | Eco-friendly |
| Steel Spacer | MS Steel | 150×200×300 mm | Heavy duty |
Fastener Specifications
| Component | Specification | Standard |
|---|---|---|
| M16 Bolts | Class 8.8 | IS 1367 |
| M16 Nuts | Class 8 | IS 1367 |
| Washers | Hardened, 50 mm OD | IS 2016 |
| Galvanizing | 550 g/m² | IS 2629 |
W-Beam Barrier Installation Standards
Proper installation is critical for W-beam crash barrier performance. TMR Traffic Safety follows MORTH and IRC guidelines for every installation.
Single Beam vs Double Beam Barrier
| Feature | Single Beam | Double Beam |
|---|---|---|
| Number of Rails | 1 W-beam | 2 W-beams |
| Rail Spacing | N/A | 350 mm (typical) |
| Height to Top Rail | 750 mm | 1100 mm |
| Vehicle Types | Cars, LCVs | Cars, Trucks, Buses |
| Speed Suitability | Up to 60 km/h | Up to 100+ km/h |
| Cost | Lower | Higher |
Installation Geometry
| Mounting Height | 750 mm (single) / 1100 mm (double) |
| Post Embedment | 1.2 m – 1.5 m in concrete/soil |
| Rail Overlap | 250 mm minimum at joints |
| Camber | 1:4 to 1:6 slope for drainage |
| Setback | 1.5 m – 3.0 m from roadway edge |
Post Spacing Guidelines
| Spacing | Application | Containment |
|---|---|---|
| 2.0 m | Critical locations, terminals | High |
| 3.0 m | Standard highway sections | Normal |
| 4.0 m | Low-risk areas, medians | Normal |
Installation Process
Site Survey
Mark post locations per design drawings
Excavation
Dig post holes to specified depth
Post Setting
Install posts plumb and at correct height
Backfilling
Compact concrete or soil around posts
Rail Installation
Bolt rails to posts with spacers
Torque Verification
Ensure proper bolt tightness
Inspection
Final quality check and certification
W-Beam Barrier FAQs
Common questions about our W-beam crash barriers
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