Major contributing factor to cause of slump type landslides in highway design, construction and maintenance in California, is ground water which can be intercepted and removed by installation of horizontal drains; new hydraulic drill rig described, capable of drilling drain holes 300 ft or more in depth.


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    Title :

    Horizontal drill


    Additional title:

    Calif Highways Pub Works


    Contributors:
    Root, A.W. (author)

    Published in:

    Publication date :

    1955


    Size :

    3 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English