1. Scope
Describe a test standard for structural materials and fire-resistive barriers when exposed to temperatures expected in a tunnel fire.
Accidental fires and experimental fires in tunnels have shown that the realized temperatures (up to 2500 F) are much higher than building fires (less than 2000 F). This questions the validity of fire proofing structural elements and barriers based on tests using fire curves derived from building fire temperatures. It is predicated that codes relating to tunnel construction will adopt the standard and the users will be the material manufacturers, design engineers, and testing laboratories.
Keywords
RABT/ZTV Tunnel Curve;Rijkswaterstaat Tunnel Curve
The title and scope are in draft form and are under development within this ASTM Committee.
Citing ASTM Standards
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