Analytical models are developed in the report for: (1) soil loads from auger borer construction, (2) transverse bending stresses from pipeline pressurization in contact with soil disturbed by auger borer construction, and (3) three-dimensional stresses in buried pipelines subjected to repeated train loadings. In addition, an analytical model is developed for longitudinal bending stresses and deformations caused by carrier pipe settlement adjacent to cased crossings. Improved practices for cased crossings are reviewed. It is concluded that thicker wall pipe and greater depths of installation represent feasible alternatives to casings, although some additional evaluation of these alternatives is necessary to develop optimum design and construction procedures.


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    Title :

    State-of-the-Art Review: Practices for Pipeline Crossings at Railroads. Executive Summary


    Contributors:

    Publication date :

    1986


    Size :

    61 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    State-of-the-Art Review: Practices for Pipeline Crossings at Railroads

    T. D. O'Rourke / A. R. Ingraffea / H. E. Stewart et al. | NTIS | 1986


    Pipeline crossings under railroads and highways

    Spangler, M.G. | Engineering Index Backfile | 1964


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    Transmission line crossings over railroads

    Mershon, Ralph D. | Engineering Index Backfile | 1908


    Wire crossings over and under railroads

    Reed, J.S. | Engineering Index Backfile | 1947