. The Street railway journal . TWO FORMS OF THE BALLASTED than where the rails rested on wooden stringers. In regardto stringers, it was thought that they reduced the noise nomore than cross-ties, but it was found recently on the Berlinelectric elevated railway that a deep stringer was quite effec-tive in reducing noise. (See Street Railway Journal, June4, 1904, page 842). Layers of felt or rubber between the struc-ture and cross-ties reduced noise somewhat, but a solid woodenfloor had no apparent effect. Covering the tracks with a thinlayer of gravel had a very material effect, but the most e
. The Street railway journal . TWO FORMS OF THE BALLASTED than where the rails rested on wooden stringers. In regardto stringers, it was thought that they reduced the noise nomore than cross-ties, but it was found recently on the Berlinelectric elevated railway that a deep stringer was quite effec-tive in reducing noise. (See Street Railway Journal, June4, 1904, page 842). Layers of felt or rubber between the struc-ture and cross-ties reduced noise somewhat, but a solid woodenfloor had no apparent effect. Covering the tracks with a thinlayer of gravel had a very material effect, but the most effec-tive remedy for noise was a regular ballasted roadbed. It wasfound also that the quality and condition of the steam rolling. :, USED ON THE BERLIN STADTBAHN One of the great advantages of a concrete viaduct would beits light color, harmonizing well with abutting buildings, andmaking up for any darkening effect of a solid floor. Iron rustand oil from the cars would not get all over the structure asnow if parapets were used, but it would be an added improve-ment if a ballasted roadbed were kept as clean as in Berlin andParis, where the gravel is as fresh as on a beach. While subways may be best for the centers of very largecities, elevated lines have a very important use, perhaps no moretemporary than subways, and the writer expects to show in afuture article how such lines may effect radical changes andimprovements in existing city systems. It has been found byMr. Arnold and others not only that noise can be practicallyeliminated, both on existing roads and on new ones, but also
Size: 3068px × 814px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
