Mechanical ventilation of tunnels is costly because of the initial installation and the continued maintenance and operation. However, at some tunnel length corresponding to a particular altitude, traffic configuration, and topography, there is a need for this forced ventilation. The study was undertaken to help determine the pollution concentration in existing tunnels in Colorado, and predict the length of tunnels which will need mechanical ventilation. The report supplies data on short tunnels in Colorado and predicts concentrations of pollutions in longer tunnels based on formulas now in existence. Vehicle emission data for high altitudes is also reported. (Author modified abstract)


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Colorado Tunnel Ventilation Study


    Contributors:

    Publication date :

    1972


    Size :

    48 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Colorado Tunnel Ventilation Study

    B. B. Gerhardt / D. E. Donnelly / R. G. Griffin et al. | NTIS | 1973


    Tunnel driving in Colorado

    Bain, Foster H. | Engineering Index Backfile | 1909


    New Colorado railway tunnel

    Charles, K. | Engineering Index Backfile | 1945


    Submerged tunnel ventilation shaft and submerged tunnel ventilation system

    LIU SHENG | European Patent Office | 2020

    Free access

    Vehicular tunnel ventilation

    Schintler, E. | Engineering Index Backfile | 1942