Design Fires in Road Tunnels (2011) / Chapter Skim
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Appendix D - Tunnel Safety Projects Additional Descriptions
Appendix D - Tunnel Safety Projects Additional Descriptions
Pages 150-155
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From page 150... ...
T-20 takes the lead in developing AASHTO standards and guidelines for existing and new tunnels, working with NFPA, APTA, FHWA, and the appropriate TRB committees on standards and guidelines for highway and passenger and freight rail tunnels. Tunnel safety measures such as the Mont Blanc Tunnel emergency pullout area and variable message sign showing maximum speed limit and required vehicle spacing, as well as refuge room requirements require considerations.
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From page 151... ...
6. Develop Tunnel Facility Design Criteria to Promote Optimal Driver Performance and Response to Incidents The Europeans found that innovative tunnel design that includes improved geometry or more pleasing visual appearance will enhance driver safety, performance, and traffic operation.
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By providing better knowledge about the fire and explosion hazards involved, design fire scenarios and acceptance criteria were to be developed. WP2 Technical tasks: 2.1 Development of realistic design scenarios 2.2 Define acceptance criteria (79)
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From page 153... ...
WP4 Technical tasks: 4.1 Structural elements functional performance, and load bearing capacity. 4.2 Improving components functional capacity.
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From page 154... ...
• Demonstrate, with before and after tests, that the innovative upgrading measures proposed in this project provide major improvements in fire safety when compared with the existing tunnels situation without upgrading. • Provide feedback to work packages 1 to 4 in terms of the interaction of their individual features with the features developed in other work packages.
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From page 155... ...
The report includes basic principles of design fires, tunnel fire statistics, and impacts of fires and smoke in tunnels on people, equipment and structure. The data are analyzed and different sets of data are compared to ascertain the degree of confidence attributed to the information.
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