. Canadian engineer. e overcome by rolling and sprinkling,although, properly speaking, the most economical methodand that generally followed calls for neither rolling norsprinkling. Good gravel which binds well and which liesat a normal distance should evidently be used in preferenceto a harder gravel lying too far from the spot where it isto be used. Only in the case of bitumen gravelling is itadvisable to use gravel not sufficiently hard, even if foundclose by. The principle on which this theory is based isthat it would be unwise to use capital for an improvementmost of which would not be pe
. Canadian engineer. e overcome by rolling and sprinkling,although, properly speaking, the most economical methodand that generally followed calls for neither rolling norsprinkling. Good gravel which binds well and which liesat a normal distance should evidently be used in preferenceto a harder gravel lying too far from the spot where it isto be used. Only in the case of bitumen gravelling is itadvisable to use gravel not sufficiently hard, even if foundclose by. The principle on which this theory is based isthat it would be unwise to use capital for an improvementmost of which would not be permanent. Although thegravel surface wears out as the earth one does, and asalso does a stone surface, if the road, when gravelled, isproperly kept, a very considerable portion of the gravelremains and serves as a foundation, as it were, for freshlayers of gravel. Gravel which does not contain more than 20% ofearthy substances cannot be accepted for normal gravel-ling. In such cases, the use of stone covered with such. Fig. 3.—MontreaUQuebec Road—St. IauMErmite(LAssomption). Macadam Done in 1915. In the course of his report, the Honj M. Tessiersays: Another thing to be considered in studying thethe most economical methods of construction, is the ex-traordinary development of our road policy. At an inter-view which I recently had with the members of a very im-portant delegation, it was observed to me that the carry-ing out of that policy had upset everything, had com-pletely changed the ideas of the rural population, haddone away with all opposition to the new state of things,we had created ; that we no longer needed to have lecturesgiven, to carry on a campaign ; that the province now cameto us, begged us to not stop, even asked us to Set asidethe precautions which the present financial situation im-poses on us. Such dispositions on the ratepayers partshould not displease us, for we really have wished for suchmentality, have brought it about and we wish to maintainand even d
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