Architect and engineer . tively, in paying for labor, than our dol-lar, big results have been achieved withcomparatively small expense. Cooperationand enthusiasm counted heavily. Mexico August, 1930 AUCHITEICT AND ENGINEER. 75 sent thoroughly trained engineers abroadto learn just what was being done in latesthighway construction in other countries, es-pecially in the United States. These engi-neers were intelligent, observing, noted the mistakes of their neighborsand profited by them. They returned withhigh resolution—with the result that al-ready, Mexicos highway system deservesth
Architect and engineer . tively, in paying for labor, than our dol-lar, big results have been achieved withcomparatively small expense. Cooperationand enthusiasm counted heavily. Mexico August, 1930 AUCHITEICT AND ENGINEER. 75 sent thoroughly trained engineers abroadto learn just what was being done in latesthighway construction in other countries, es-pecially in the United States. These engi-neers were intelligent, observing, noted the mistakes of their neighborsand profited by them. They returned withhigh resolution—with the result that al-ready, Mexicos highway system deservesthe commendation of the whole world. much within a given unit but when oilingis scheduled, a separate or distinct formuladetermining the specific gravity for the oilwhich is to be used as a binder—is preparedto solve each individual problem. Theyare therefore, bituminous in character. Allwork evidences mature engineering andscientific practice. The motorist contemplating a tour inMexico will naturally make inquiry into. Sluice Gate House with dome on the left and :>hrine, on the right, built of stone, and Spanish Colonial in design. On thePachuca Highway which passes between two long stone dykes. Photograph by the author. Let us examine the location of these newroads which has been carefully studied withresulting easy grades. In construction theyhave excellent foundations, surfacing, cul-verts and bridges. Drainage is thoroughlytaken care of, a vital factor in maintenance,in Mexico where storms of torrential pro-portions arise suddenly. Because stpne andgravel are employed from the nearest avail-able clififs, quarries and pits along thecourse, the highways and retaining wallsexpress fitness by being indigenous. Thesurfacing material thus sometimes varies the price of gasoline, the frequency ofgarages, service stations, potential hoteland auto camp facilities, besides effective,rambling routes. It is easy to answer thesequestions because this system of new high-ways is so y
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