Excerpt from Highway Construction, Vol. 2: Instruction Paper The amount of transverse rise, or the height of the center above the gutters, varies with the different paving materials; smooth pave ments requiring the least, and rough ones and earth the greatest rise: The rise is generally stated in a proportion of the width of the carriage-way. The most suitable propor tions are shown in Table XII. Drainage of Streets. Sub-foundation Drainage. The sub foundation drainage of streets cannot be effected by transverse drains, ...
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Excerpt from Highway Construction, Vol. 2: Instruction Paper The amount of transverse rise, or the height of the center above the gutters, varies with the different paving materials; smooth pave ments requiring the least, and rough ones and earth the greatest rise: The rise is generally stated in a proportion of the width of the carriage-way. The most suitable propor tions are shown in Table XII. Drainage of Streets. Sub-foundation Drainage. The sub foundation drainage of streets cannot be effected by transverse drains, because of their liability to disturbance by the introduction of gas, water, and other pipes. Longitudinal drains must be depended upon entirely; they may be constructed of the same materials and in the same manner as road drains. The number of these longitudinal drains must depend upon the character of the soil. If the soil is moderately retentive, a single row of tiles or a hollow invert placed under the sewer in the center of the street generally will be sufficient; or two rows of tiles may be employed, one placed outside each curb line. If, on the other hand, the soil is exceedingly wet and the street very wide, four or more lines may be employed. These drains may be permitted to dis charge into the sewers of the transverse streets. Surface Drainage. The removal of water falling on the street surface is provided for by collecting it in the gutters, from which it is discharged into the sewers or other channels by means of catch basins placed at all street intersections and dips in the street grades. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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