Highway Engineering - Rural Roads And Pavements

HIGHWAY ENGINEERING RURAL ROADS AND PAVEMENTS - 1921 - PREFACE - IN writing a text-book on a subject which is growing as rapidly as highway engineering is at the present time one finds himself confronted with a varying practice. The student who desires the latest upto-date matter on roads must consult contemporaneous engineering periodicals and literature and sift from them what he deems best suited to his purpose. In this work the author has endeavored to bring into a brief space the most recent and best practice as determined by his experience and research. As this text is more especially concerned with rural roads, those types of roads most common in the rural districts, small cities, and towns, or best adapted for use therein, have been covered in greatest detail. Pavements have been treated largely with a view to their use for country roads, although the treatment is thought to be sufficiently comprehensive to form a beginning or short course for those desirous of taking up city paving work. The author is of the opinion that almost all of the principles of road building applicable to rural highways are equally applicable to city streets and vice versa. While technical analyses and technical language have not been shunned, it has been constantly borne in mind that the bodk is intended to form one of a series in gricultural education. It is believed, therefore, that the work is of such a character that it will be read with interest by the layman and, because here are brought together many ideas from many sources, will sewe as a useful reference book for professional engineers, road builders, and road officers. A method of calculating mixtures to conform to the Fuller maximum density curve for concrete, the New York sheet asphalt mixture, or any other selected or predetermined sieve analysis design, is given. This, as far as the author knows, is original and, he thinks, mathematically correct and rigid, avoiding much of the guesswork of the older presentations. He has also illustrated his straight-line method for plotting granulometric analyses, which seems to have advantages over the ordinary method. Tentative methods for testing sandclay mixtures are included these, while not yet standardized by technical organizations, are , in daily practical use. A graded mixture for gravel roads based upon the maximum density curve is suggested. The surveying and location of roads has been gone into with considerable detail, because with the present inability of the railways to serve the public adequately the author looks for increased business by motor transport and consequently greater interest to be manifested in constructing new lines of highway and straightening and shortening old. . In the preparation of the test, naturally many sources have been consulted. Throughout, references have been subtended if any have been overlooked it has been unintentional. However, those sources most freely consulted are here mentioned Periodicals Engineering and Contracting. Engineering RecorJ t Engineering i 9 - Engineering News 1 Good Roads. Highway Engineering Text-books . Bakers Roads and Pavements. Blanchard and Drownes Text-. book on Highway Engineering. Blanchards Highway Engineers Handbook. Harger and Bonneys Handbook for Highway Engineers. Richardsons Modern Asphalt Pavements. Richardsons Asphalt Construction. Hubbards Dust Prevention and Road Binders. . 8 ...