. The railroad and engineering journal . of glazed porcelain. These carriers or bridges are placedill a cast-iron conduit of the form shown in figs. 15 and16, covered by a top which is bolted on. Fig. 17 showsone of the carriers or bridges. The conduit is made insections about 3 ft. long, which are joined together byflanges and bolts with suitable packing. This makes a verystrong and tight arrangement, but has not yet been veryextensively introduced. The House-to-House Company in London uses cablesplaced in iron pipes. These pipes run into man-holes ofthe special form shown in fig. 18. The man
. The railroad and engineering journal . of glazed porcelain. These carriers or bridges are placedill a cast-iron conduit of the form shown in figs. 15 and16, covered by a top which is bolted on. Fig. 17 showsone of the carriers or bridges. The conduit is made insections about 3 ft. long, which are joined together byflanges and bolts with suitable packing. This makes a verystrong and tight arrangement, but has not yet been veryextensively introduced. The House-to-House Company in London uses cablesplaced in iron pipes. These pipes run into man-holes ofthe special form shown in fig. 18. The man-hole boxes. are of cast iron, but are open at the bottom, the floors be-ing made simply by sand tamped down well. The coveris movable, and is on a level with the street or system has been in use about a year, and so far withvery good results. The Calendar Bitumen Company has introduced twodifferent systems. In the first one, which is in use inLiverpool, the cables are placed in cast iron troughs, in
Size: 2306px × 1084px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
