of paper or other material, which are made of such a thick- tion of 250 feet above the base will have an electric light of ness as ¢.0 rise a little above the upper edges of the flanges, Structural Steel. great power. The tower will be completed during the thus serving as cushions for the rails and… … In compression, in his opinion, steel has not passes a hoisting rope, one end of which is been proved to be as strong as wrought secured to the top of the elevator car and the iron, and the necessity for most careful in- other end passes down one side of the tower to about the middle, where it is…
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