SUBWAY ENVIRONMENTAL SURVEY : MONTREAL URBAN COMMUNITY TRANSIT COMMISSION

THE ENVIRONMENTAL SURVEY OF THE MONTREAL URBAN COMMUNITY TRANSIT COMMISSION (MUCTC) SUBWAY SYSTEM WAS UNDERTAKEN AS PART OF A LARGER INVESTIGATION TO DEVELOP COMPREHENSIVE SUBWAY ENVIRONMENTAL DESIGN CRITERIA, AND FOCUSED UPON CONDITIONS PREVAILING AMONG THE MAJOR OPERATING PROPERTIES IN DIFFERENT CITIES. THE MONTREAL SUBWAY SYSTEM, WHICH BEGAN OPERATING IN 1966, WAS BASED ON THE PARIS METRO AND EMPLOYS RUBBER-TIRED VEHICLES RUNNING ON CONCRETE. THE LATTER CONFIGURATION PERMITS GRADES OF NEARLY SEVEN PERCENT WHICH TAKE ADVANTAGE OF GRAVITY DURING ACCELERATION AND BRAKING TO REDUCE POWER REQUIREMENTS. THE STEEP GRADE ALSO ALLOWS MUCH OF THE SYSTEM TO BE CONSTRUCTED AT LOWER COST IN DEEP ROCK. IN COMPARISONS BETWEEN THE MONTREAL METRO AND CONVENTIONAL AMERICAN SUBWAYS, THREE BASIC DIFFERENCES APPEAR WITH REFERENCE TO ENVIRONMENT: (1) BECAUSE OF ITS DEPTH AND LOW WINTER TEMPERATURES, VENTILATION IN THE MUCTC SYSTEM MUST PRINCIPALLY RELY UPON MECHANICAL MEANS, RATHER THAN PISTON ACTION. (2) THE MONTREAL SYSTEM IS CONSIDERABLY QUIETER, WITH MINIMAL REQUIREMENTS FOR ACOUSTICAL LINING; SQUEALING ON CURVES IS NON-EXISTENT. (3) RIDE QUALITY IS NOTICEABLY SMOOTHER. AS INITIALLY DESIGNED, THE MONTREAL METRO SUFFERED SEVERE PROBLEMS WITH HIGH SUMMER TEMPERATURES AND UNACCEPTABLE VELOCITIES ON STATION PLATFORMS AND DOORS. AS A RESULT, THE ENTIRE MUCTC SYSTEM UNDERWENT AN EXTENSIVE RETROFIT OF ALL VENTILATION EQUIPMENT. AT PRESENT THE RETROFIT OPERATION HAS BEEN COMPLETED, AND THE SUBWAY ENVIRONMENT IS WITHIN ACCEPTABLE LIMITS. APPENDED MATERIAL COVERS: GENERAL INFORMATION (ROUTES, GEOMETRY, METRO CAR DATA AND ELECTRICAL POWER CONSUMPTION), TYPICAL TRAIN OPERATIONS, AERODYNAMIC AND TEMPERATURE ANALYSES, COMPARATIVE TEMPERATURE GRAPHS FROM BEFORE AND AFTER RETROFIT, CONTROL SCHEDULE FOR FAN SHAFT FANS AND BLAST SHAFTS, BLAST SHAFT EFFICIENCIES AND FAN CAPACITIES, AIR VELOCITY AND PRESSURE MEASUREMENTS, INNOVATIVE CLOUSURES FOR FAN AND BLAST SHAFTS, DIRT AND DUST CONTROL WITH A CHEMICAL ANALYSIS, AND DECIBEL MEASUREMENTS OF FANS. /UMTA/

  • Supplemental Notes:
    • PROJ NO DC-MTD-7
  • Corporate Authors:

    De Leuw, Cather and Company

    165 West Wacker Drive
    Chicago, IL  United States  60601
  • Publication Date: 1971-10

Subject/Index Terms

Filing Info

  • Accession Number: 00242073
  • Record Type: Publication
  • Source Agency: Urban Mass Transportation Administration
  • Files: TRIS, USDOT
  • Created Date: Nov 7 1972 12:00AM