β Scribed by O.C. Farquhar
No coin nor oath required. For personal study only.
This paper concerns a program to describe and analyze rock materials along Massachusetts highways. The strength of these materials and any susceptibility to failure depend on their composition and structure, as well as on hydrologic conditions and steepness of the slopes. The program will involve the details of geologic processes affecting the stability of some natural slopes in addition to selected excavations.
Highways and railroads are not as susceptible to slope stability problems in Massachusetts as in areas with higher relief or rock masses of lower overall strength. Nevertheless, certain routes have been closed from time to time because of local rock falls, as well as mudflows, embankment slippage, and other mass movements. And, although Massachusetts is a comparatively small state, there is a greater variety both of landforms and of rock types than in many larger areas. This paper describes features of a plan to examine the problems of highway cuts throughout the state, composed only of rock or weathered rock.
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