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Show TELLS GOOD R0ADS' NEEDS Farm and Fireside Explains Best Plan for Oval Surface Should Be Flat as Possible. "Everybody agrees that the surface of a road must be oval in its contour," con-tour," says Farm and Fireside, "but not all understand that this oval ought to be as flat as the character of the road material and the lay of the land will permit. With brick or concrete construction the oval may be very flat, because the traffic makes no ruts to carry the water lengthwise of the road, nor does the pavement soften and develop depressions when kept In contact with water. "But broken stone (water-bound macadam), being susceptible to penetration pene-tration by water, and subject to great damage if frozen while soaked, must be given a higher oval ; and for gravel roads a still steeper 3itch Is demanded. de-manded. "As for earth roads, the steepness must be governed by the combined influence of p. number of factors. Perhaps the leading factor . is the quality of the earth in each particular particu-lar case. And next might be placed the presence or absence of 'seeps' or 'spouts'; while another of these vital factors would, be the longitudinal pitch of the highway." |