Fires in Mass Transit Vehicles Guide for the Evaluation of Toxic Hazards (1991) / Chapter Skim
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Appendix D: Transit Vehicle Interior Materials
Appendix D: Transit Vehicle Interior Materials
Pages 73-84
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From page 73... ...
Transit vehicle procurement, construction, and arrangement; materials properties and trade-offs; and descriptions of typical materials used for rail and bus vehicle interiors are reviewed here. TRANSIT VEHICLE PROCUREMENT AND CONSTRUCTION Currently, no standard specification is used in the United States for the procurement of rail or bus transit vehicles.
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From page 74... ...
After a contract is awarded, the car builder follows the contract bid book and contract drawings to deliver a vehicle design and then produces a certain quantity of cars tailored to the specific requirements of the particular rail transit system. In a specific instance, two transit systems have recently jointly used one basic vehicle specification, with certain modifications, to purchase vehicles built by the same car builder.
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From page 75... ...
This may be accomplished through a design process that is directed at eliminating potential ignition sources, providing for early detection, containing fires should they occur, and limiting fire propagation through vehicle configuration and proper materials selection. Existing Rail Transit Vehicle Materials Selection Guidance Currently, the fire safety guidance available from the Urban Mass Transportation Administration (UMTA)
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From page 76... ...
Currently, no single federal agency has codified the design requirements necessary for fire safety of transit vehicles. Some guidance is available to the designer, however, such as the UMTA Flammability Guidelines and the National Fire Protection Association's Standard 130, Fixed Guideway Transit Systems.
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From page 77... ...
size, resistance to graffiti and vandalism, weight, maintenance, formability to desired shapes, and cost. Plastics have gained wide usage as transit vehicle liners because highly suitable components can be economically produced, usually at reduced weight.
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/' l l ~ -~/~/~~ FIGURE: D-1. Vehicle undereat equipment.
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From page 79... ...
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From page 81... ...
The following sections identify and describe vehicle interior materials by material function. Seating Bus transit vehicles are equipped with various types of seats.
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From page 82... ...
Insulation Insulation materials are used to control occupant compartment noise and to minimize heat input or heat loss to the occupant compartment and thereby provide a comfortable ride. Fiberglass batting and sprayed-on polyurethane foam have commonly been used as bus insulation materials.
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From page 83... ...
Miscellaneous Door edges and window seals are made of elastomeric materials such as neoprene. Urethane foam has been used for armrests and padding for stanchions and grab rails.
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