T-18 LogRail

T-18 Log Rail combines the natural beauty of wood with the strength of steel providing an aesthetic appealing and fully crash tested safety barrier system.

Regarded as the industry leader in mixed wood and steel guardrail systems, more than 1500km of T-18 Log Rail has been installed worldwide.

The rail element is constructed from a 180mm diameter Douglas fir log. A steel U-channel is factory-fitted into the rear of the log providing the necessary tensile strength required for vehicle containment and re-direction. The rails are supplied in standard lengths of 4m.

queensland road safety with t18 log rail
t18 log rail roadside crash barrier system
t18 log rail road safety barrier

The supporting posts comprise a steel C-section that is driven directly into the ground. Once installed, the C-posts are fitted with the 180mm diameter timber cladding.

A specially engineered fishplate is used to splice the rail elements and secure the rails to the supporting posts. This assembly requires just three (3) bolts providing rapid installation. The adjustment in this connection allows for the necessary horizontal and vertical adjustment required for most roadside sites.

T-18 Log Rail can be installed with posts spaced every 2m or 4m. This provides design flexibility depending upon the available clearance from the barrier to the roadside hazard.

Safe vehicle containment and re-direction is developed through a combination of the tensile strength of the steel components and the energy-absorbing characteristics of wood.

Upon impact, the posts absorb some of the crash energy through post rotation in the surrounding soil prior to separation from the rail as they fully yield. The rail is released from the supporting posts once the connection bolt shears.

Once the rail separates from the posts, the rail forms a re-directive ribbon, guiding the vehicle away from the nearby hazard.

T-18 Log Rail has been fully crash tested to the requirements of European Standard EN1317 Parts 1 & 2, Containment Class N2.

Crash testing evaluates the structural adequacy of the barrier, the post impact vehicle behaviour and risks to the vehicle occupants.

T-18 has been successfully evaluated with posts spaced at 2m and 4m centres.