Galvanized Guardrail Standards
Short answer: for export projects, galvanized guardrail is specified to AASHTO M180 in North America and most export markets — minimum 550…
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Knowledge base
Guardrail & Roller Barrier Technical Notes
Specification guides, comparison notes and standards explainers written for the people who have to sign off a roadside design — procurement engineers, consultants and contractors.
Roller Barrier Dimensions and Weight
Short answer: a roller barrier unit uses 350 mm or 400 mm diameter rollers at 1.0 m or 1.5 m post spacing,…
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Roller Barrier Installation Guide
Short answer: a roller barrier is installed in six stages — set out the line, prepare the foundations, set the posts, mount…
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Guardrail End Terminal Types
Short answer: a guardrail end terminal is the engineered treatment at the start and end of a run — the point a…
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W-Beam Guardrail Specifications
Short answer: a standard W-beam guardrail panel is a 310 mm wide, 83 mm deep corrugated steel section, rolled in 2.67 mm…
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Roller Barrier Price Guide
Short answer: roller barrier cost is driven by four specification choices — roller diameter, post spacing, coating class and run length —…
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How Does a Roller Barrier Work?
Short answer: a roller barrier works by converting crash energy into rotation. When a vehicle strikes the barrier, the rows of rotating…
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Roller Barrier vs W-Beam Guardrail
Short answer: specify a W-beam guardrail for long, straight or gently curved runs where standard deflection is acceptable and budget per metre…
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Advantages of thrie beam guardrail
The thrie beam guardrail (also called tri-wave crash barrier, road barrier, guardrail barrier, metal beam barrier, etc.) is designed to install along…
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