NEED FOR VENTILATION AND ITS ROLE IN TRAFFIC INSTALLATIONS. THEME: AIR POLLUTION (IN FRENCH)

THIS PAPER DISCUSSES VENTILATION SYSTEMS IN TUNNELS, AND QUOTES THE CARBON MONOXIDE CONTENT (100-150 PPM.) ON WHICH CALCULATIONS MUST BE BASED. THE SLOPE OF THE TUNNEL, ALTITUDE AND SPEED INFLUENCE THE CARBON MONOXIDE CONTENT AND TRAFFIC CONDITIONS DETERMINE THE QUANTITY OF AIR NECESSARY. AT JUNCTIONS, CUSTOMS OFFICES, ETC., WHENEVER TRAFFIC IS SLOW, THE CONCENTRATION OF GASES CAN BE LIMITED BY INJECTION OF FRESH AIR. IN CASE OF FIRE IN A TUNNEL, THE AUTHOR EMPHASIZES THE IMPORTANCE OF PROVIDING SOURCES OF FRESH AIR AT KNEE LEVEL. THE VARIOUS FACTORS INFLUENCING THE COST AND SELECTION OF VENTILATION SYSTEMS (TRANSVERSE OR SEMI-TRANSVERSE, AND LONGITUDINAL VENTILATION) ARE OUTLINED. /LCP/FESR/RRL/

  • Supplemental Notes:
    • 18 Pp, 19 FIG, 3REF
  • Authors:
    • HAERTER, A
  • Publication Date: 1967-10

Media Info

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Filing Info

  • Accession Number: 00203298
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Nov 3 1970 12:00AM