Excerpt from Tables and Rules for Facilitating the Calculation of Earthwork, Land, Curves, Distances, and Gradients, Required in the Formation of Railways, Roads, and Canals: Also, Essays on the Prismoidal Formula, and on the Power Required Upon Inclined Planes
The great advancement made of late years in the science of civil engineering, and the increased number of works promoted by public and private interests, in the formation of roads, canals, and railways, call for a more extended view of the theory of the construction and measurement of such works than has hitherto been given to the world, both for the better instruction of pupils, and for the facilitation of the labours of practical men. With the above object in view I have prepared the following work, especially adapted to the "measurement" of railways, and comprising in its extent a greater compilation of Tables and Essays, on the important features of this subject, than has hitherto been introduced.
During the process of calculating the cubic quantity of earthwork requisite to form a given embankment, or to be taken from a given cutting, I have found the usual methods proposed in various authors and geometric writers more or less tedious in their application; and in the more improved works furnished to the public.
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