SKYSCR APERS

is the name popularly given to high buildings. In general, this term is not applied to such structures as towers, monument s, etc., but is reserved for buildings exclusively. In the construction of tall buildings the pre ure on the foundation per square foot is enormous. In order that the structure may be stable, the foundatio ns usually extend to bed rock. Frequently cai ons are employed to attain this depth, and these are subsequently filled with concrete and used as huge piles. The structure of the modern skyscraper is of steel, the walls being carried on this structure rather than supporting it. There are various reasons for the erection of this type of structure, the most compelling being the large revenue theoretically obtainable from the rental of space in them. Their life is usually taken as 75 to 100 years, while their economic existence may be from 25 to 40 years, depending upon locality, future growth of the city, etc. A partial list of the skyscrapers of the U. S. follows: ‘Wool worth Building, N. Y. City, 51 stories, 792 ft. high; Metropolitan Life, N. Y. City, 50 Stories, 700 ft. high; Singer Bldg. N. Y. City, 41 Stories, 612 ft. high; Municipal Bldg., N. YY. City, 24 stories, 560 ft; “hich; City Hall, Philadelphia, 537 ft. high; Custom House, Boston, 505 ft. high; Traveler’ s Insurance, Hartford, Ct., City, 37 stories, 485 ft. high.