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Design fires are an essential part in designing tunnels and tunnel fire life safety systems. Fire characteristics are used to establish the sizing of ventilation and other mechanical equipment in tunnels and the scenarios to consider when developing emergency response plans. They are also used, indirectly, when considering the impact of fires on the structure. As such, design fires form the base input for emergency ventilation, evacuation, and structural design analyses. A design fire is generally defined in terms of heat release rate, and species output as functions of time. This session summarizes efforts to develop a set of design fire scenarios for both road and railway tunnels.

Design Fires for the Design of Road Tunnels (CH-12-C081)
Ahmed Kashef, Ph.D., P.E., Member, Joao Viegas, Ph.D., Antoine Mos, Ph.D., Norris Harvey, Ph.D., P.E.
This product contains: Recorded Presentation Audio (mp3) Slides (pdf)

NYCT R-142 Train Design Fire Scenario Characteristics (CH-12-C082)
Greg Sanchez, P.E., Member
This product contains: Recorded Presentation Audio (mp3) Slides (pdf)

A New Approach to Determining Passenger Rail Vehicle Design Fires (CH-12-C083)
Jeffrey Tubbs, P.E., Member, Jarrod Alston, P.E., Kurt Schebel, Nicholas Dembsey, Ph.D., P.E., Brian Meacham, Ph.D., P.E., Mathew Johann, P.E.
This product contains: Recorded Presentation Audio (mp3) Slides (pdf)