FAQ
Frequently Asked Questions
▸ What is a W-Beam crash barrier and how does it work?
A W-Beam crash barrier (also called W-section guardrail or metal beam crash barrier) is a corrugated steel safety barrier installed on the sides and medians of highways. The W-shaped cross-section provides high tensile strength while allowing controlled deformation on impact — absorbing energy and redirecting the vehicle back onto the road rather than allowing it to cross over or become airborne. DG Constructions manufactures W-Beam barriers to IRC SP 84 and MORTH specifications.
▸ What is TB11 and TB42 crash test certification?
TB11 and TB42 are crash test performance levels defined under European standard EN 1317. TB11 tests a 13,000 kg heavy truck at 80 km/h — simulating a truck collision. TB42 tests a 900 kg passenger car at 110 km/h. Barriers that pass both tests are considered the gold standard for Indian national highways. DG Constructions W-Beam barriers are certified for both levels, meeting NHAI's most stringent requirements.
▸ What is the price of W-Beam crash barriers in India?
W-Beam crash barrier price depends on steel grade, thickness (2.67 mm or 3 mm), order quantity, delivery location, and current steel market rates. Contact DG Constructions at +91 94296 93035 or marketing@dggroupcompanies.com for an accurate project quote with delivery timeline.
▸ Do you supply crash barrier accessories like posts, spacer blocks, and bolts?
Yes. DG Constructions supplies the complete crash barrier system: W-Beam rails, C-Channel or I-Beam posts, spacer blocks (block-outs), and all hardware (bolts, nuts, washers). We can also supply end treatments (flared ends, embedded terminals) as per MORTH specifications. A complete system from one manufacturer ensures compatibility and quality.
▸ How quickly can you deliver W-Beam crash barriers?
For standard W-Beam barriers (2.67 mm, 4.3 m length), we maintain stock at our Karad factory for quick dispatch. Large project quantities are manufactured to order with typical lead times of 15–30 days depending on quantity. Our NH48 location enables fast road transport to any Indian state. Contact us for delivery timelines specific to your project location.
▸ What is the W-Beam crash barrier price in India?
W-Beam crash barrier price in India depends on: (1) thickness — 2.67 mm (12G) or 3.0 mm (10G), (2) quantity ordered, (3) with or without posts & spacer blocks, and (4) current steel market rates. Prices fluctuate with MS steel prices. DG Constructions offers competitive manufacturer-direct pricing — no middleman markup. Call +91 94296 93035 or email marketing@dggroupcompanies.com with your quantity and project location for an accurate current quote.
▸ What is the W-Beam crash barrier IRC code and MORTH specification?
W-Beam crash barriers in India are governed by: IRC SP 84 — 2019 (Guidelines for Road Restraint Systems), MORTH Specification Section 800 (Road Furniture & Safety), and IS 2062 Grade 345 (steel grade). The crash test certification standard is EN 1317 (European). For galvanizing: IS 2629 / IS 4759. DG Constructions products comply with all these standards and are accepted on NHAI-contracted highway projects across India.
▸ What are the W-Beam crash barrier dimensions?
Standard W-Beam crash barrier dimensions as per IRC SP 84 and MORTH: Length — 4,318 mm (also available in 4,800 mm) | Width — 312 mm | Depth — 83 mm | Thickness — 2.67 mm (12 gauge) or 3.0 mm (10 gauge) | Bolt hole diameter — 16 mm | End overlap — 152 mm. Post spacing is 2,000 mm centre-to-centre. Post size: C-Channel 75×40 or I-Beam 150×75, embedded 900 mm into ground.
▸ What is a W-Beam spacer (spacer block)?
A W-Beam spacer block (also called a block-out) is a wooden or recycled plastic spacer mounted between the back of the W-Beam rail and the face of the post. The spacer holds the rail away from the post, allowing the barrier to flex properly on impact and improving vehicle redirection performance. MORTH specifications require spacer blocks on all W-Beam crash barrier installations on national highways. DG Constructions supplies standard spacer blocks — 150×100×350 mm wood or HDPE — as part of complete W-Beam system supply.
▸ Is W-Beam crash barrier used in railway projects?
Yes. W-Beam barriers (also called W-Beam fencing in railway context) are widely used near railway infrastructure in India. Common railway applications include: protection of road vehicles at level crossings, highway guardrails parallel to railway embankments, station approach road safety barriers, and grade-separated road-over-bridge (ROB) approach barriers. W-Beam for railway boundary applications follows the same MORTH specifications. DG Constructions supplies W-Beam barriers for railway-adjacent highway projects across India.
▸ What is the difference between W-Beam and double W-Beam crash barriers?
A single W-Beam has one rail on one side of the post — used for highway edge protection (one direction). A double W-Beam (back-to-back or double-sided) has two rails, one on each side of the post — used for highway medians where traffic comes from both directions. Double W-Beam median barriers are specified in MORTH Section 800 for divided highways. DG Constructions manufactures both single and double W-Beam systems. The double beam requires longer posts and wider block-outs. Contact us for double W-Beam specifications and pricing.
