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    G4/W-Beam System

G4/W-Beam System

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Semi-rigid W shape section galvanised steel highway barrier. W-Beam is the most common roadside crash barrier in use in Australia. ACP supplies two standard types of W-Beam guardrail, 4.0m NLL Standard Panel and 5.0m NLL Standard Panel


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W-Beam is roll formed from coil steel and sheared to length. It is then punched, slotted and hot dip galvanised in accordance with AS/NZS 3845 and local state guardrail specifications.

W-Beam is available ex-stock in standard effective lengths of 4.00 metres and 2.00 metres for NSW, SA, QLD, WA, NT, ACT and 5.00 metres and 2.50 metres for Victoria and Tasmania only.

Curved W-Beam

The standard straight section will align to give a smooth transition on curves with a radius greater than 45m. Pre-curved W-Beam is required for tighter radii and may be curved to traffic face concave or convex.


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W-Beam to Thrie-Beam to Type F Barrier Transition - Typical

Thrie-Beam Guardrail

Sentry Barrier W Beam System - Longitudinal Barrier

Sentry Median Barrier W Beam System - Longitudinal System

Sentry Barrier TL-4 ThrieBeam System - Longitudinal Barrier


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W-Beam complies with the requirements of: AASHTO,  AS/NZS 3845 - Road safety barrier systems.  Approved for use by Australian State Road Authorities.


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Specifications differ between States, refer to technical drawings (under Product Literature) and to the local specifications and drawings register for your local state road authority available online.

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