Briefly ...

Steel restraint systems are linear elements designed to straighten the path of vehicles. They are made by assembling steel components.

 

In accordance with NBN EN 1317-1/2/5, the performance are:

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• Minimum containment level: H2 (=TL4)

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• Maximum working widthe : Wn 3

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• Vehicle intrusion = VIn 3

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• Acceleration Severity Index (ASI) =  ASI B

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The additional features are:

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• Minimum distance between posts = 2 m

• To ensure the guardrail function, the overall height in relation to the concrete support ≥ 1,20 m

• To limit the influence on the structure, the maximum space requirement between front and rear post face = 40 cm

• For aesthetic reasons, the longitudinal elements are tubes with a diameter of: 10 and 12 cm +/- 1 cm

• For aesthetic reasons, the connections between the longitudinal elements are not visible on the 180° front panel (the fixing points will only be located on the 180° rear panel)

• The kerb is not anchored to the deck and a counter-feed is put in place to resume horizontal forces.

• To limit or even avoid reinforcements, the forces transmitted by post are M=0 kNm, V=44 kN