... practically water-tight, and the water which falls or forms on the surface must either remain there or be carried away by surface ditches at the sides of the road. " A side ditch should have a gradually falling and even grade at the bottom, and broad,... Country Roads - Página 15editado por - 1894 - 64 páginasVista completa - Acerca de este libro
| Ontario. Legislative Assembly - 1894 - 824 páginas
...should have a gradually falling and even grade at the bottom, and broad, flaring sides. Look at Fig. 1. It shows you the form which a side ditch should have....each side, and it is not dangerous to wagons and foot travellers. It is therefore a much better ditch than the one shown in Fig. 2, which represents the... | |
| United States. Department of Agriculture - 1898 - 770 páginas
...falling and even grade at the bottom, and broad, flaring sides to prevent the caving in of its banks. It can be easily cleared of snow, weeds, and rubbish;...and foot travelers. It is, therefore, a much better ditoh than the one shown in fig. 7, which represents the kind of ditch very often dng along the country... | |
| Archer Butler Hulbert - 1905 - 226 páginas
...falling and even grade at the bottom, and broad, flaring sides to prevent the caving in of its banks. It can be easily cleared of snow, weeds, and rubbish;...travelers. It is therefore a much better ditch than the kind of ditch very often dug by erosion along the country roadside." Where the road is built on a grade... | |
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