. Canadian engineer. generally of brick construction, brick having, until recently,lent itself more readily to the attainment of this objectthan either steel or concrete. But, on the other hand, inso many cases the question of expense has acted as a de-terrent, and resulted in the erection of a structure whichis anything but pleasing to the eye. The difficulty, then, has resolved itself into a questionof combining architectural beauty with economy of con-struction. The economic advantages of reinforced con-crete are indisputable, this having been recognized someyears since by our neighbors acr
. Canadian engineer. generally of brick construction, brick having, until recently,lent itself more readily to the attainment of this objectthan either steel or concrete. But, on the other hand, inso many cases the question of expense has acted as a de-terrent, and resulted in the erection of a structure whichis anything but pleasing to the eye. The difficulty, then, has resolved itself into a questionof combining architectural beauty with economy of con-struction. The economic advantages of reinforced con-crete are indisputable, this having been recognized someyears since by our neighbors across the line, with whom iHTErr^oft ELEvATiOM sECTion c-d ona-b. PLfVn SECTlOn nr ^ ^^te m 1 l<^ W ^ p ^ E: ^ \ ?, ^ ^ I s ^ ^ 1 Fig. 4.—Details of Cliininey. rests the credit of first carrying out chimney constructionsby means of reinforced concrete. The system first adoptedwas a chimney of cylindrical form, consisting of two dis-tinct shafts separated by an air space of from three to fourinches. This design was generally used until the year1909, when the conical chimney was adopted as beingmore stable, less costly, and of belter appearance. It was,
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