. Concrete bridges and culverts, for both railroads and highways . REINFORCED CONCRETE ARCH BRIDGES. 173 initials, and the spandrels are paneled. The balus-trade x>osts are mounted with ornamental urns. Thedesign is one which can well be reproduced in con-crete with either cut stone or moulded concretefacing. Stein-Teufen Bridge, Switzerland. The longest concrete arch span completed is atStein, Switzerland. Its total length is 550 feet, andthe roadway, 32 feet Avide, is 216 feet above theSitter River. The central span is 259 feet, with twoapproach spans 33i/o feet long at the Teufen end,and
. Concrete bridges and culverts, for both railroads and highways . REINFORCED CONCRETE ARCH BRIDGES. 173 initials, and the spandrels are paneled. The balus-trade x>osts are mounted with ornamental urns. Thedesign is one which can well be reproduced in con-crete with either cut stone or moulded concretefacing. Stein-Teufen Bridge, Switzerland. The longest concrete arch span completed is atStein, Switzerland. Its total length is 550 feet, andthe roadway, 32 feet Avide, is 216 feet above theSitter River. The central span is 259 feet, with twoapproach spans 33i/o feet long at the Teufen end,and four at the other end. The central piers arelieavily reinforced to resist unbalanced thrusts fromthe adjoining arches. The main arch rings are 21^/0feet wide and 4 feet thick at the crown, increasingto the springs, and reinforced with IVs-inch roundbars from 10 to 18 inches apart. It has a Telfordpavement and 2-foot walks on concrete slabs sup-ported on stringers and spandrel columns. The con-crete balustrade has openings 3 feet wide, guardedwith embedded bars.
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Keywords: ., bookcentury1900, bookdecade1900, bookidconcretebrid, bookyear1909
