File:The Street railway journal (1904) (14738906046).jpg
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English: Identifier: streetrailwayjo241904newy (find matches) FIG. 13.-OREGON CITY FILL AND OLD TRESTLE AS CUT OFF the center of the deepest bents. Some difficulty was expe- rienced in driving the piles, as the material on the banks was a cement gravel, while that in the bed of the stream was a blue clay that cracked easily. No shoes were used, all the piles being driven with square ends by means of a 3800-lb. hammer. The piles are of excellent quality, and were cut on land adjacent to the track. It took but twenty-six days to drive the 216 piles, cut them off, put on the caps and sway-brace about half of them. The trestles across the North and South Forks of Deep Creek are, respectively, 60 ft. and 70 ft. high, and were constructed in a similar manner. An interesting piece of special work is the crossing placed at the intersection of the Spring Water line with the double-track Ore- gon City line. The single track is on a 3-deg. curve and the double track has a curvature of 5 degs. Joints with spaces between the fillers and the webs of the rail are used, they being preferred to tight joints. Another special crossing is installed at Canemah, where the line crosses the Southern Pacific 10-deg. track at an acute angle. OVERHEAD LINE CONSTRUCTION For the single-track lines, a single-pole bracket construction is used for the overhead work, but on all double-track and at all sidings and stations side poles with span wire are em- ployed. The poles are of extra fine cedar, some of them being 15 ins. to 18 ins. through at the butts, while all tops are 8 ins. or over. They are 41 ft. long and are set 6 ft. in the ground. Practically all the poles were cut on the timber lands along the line, while a few were even taken from the company's right of way. They are set on 100-ft. centers and are numbered con- secutively, so that distances may be easily measured and loca- tions readily reported by the train crews in case of damage to the track or overhead work. The poles were set by means of FIG. 12.—DETAILS OF TIMBER TRESTLE ON THE OREGON CITY LINE top of the rails. Seven-strand 3/8-in. galvanized wire is used for spans. The feeder cables are carried on a cross-arm just above the bracket. At the top of the poles, 10 ft. above the trolley, an 11,000-volt three-phase transmission line is run from the power house at Boring in each direction to the sub-stations Note About Images |
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https://www.flickr.com/photos/internetarchivebookimages/14738906046/ |
| Author | Internet Archive Book Images |
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| Volume | 1904 |
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| Flickr posted date | 28 July 2014 |
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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14738906046. It was reviewed on 16 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions. |
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| current | 16:32, 14 September 2015 | | 1,238 × 1,044 (106 KB) | Fæ (talk | contribs) | == {{int:filedesc}} == {{subst:chc}} {{information |description={{en|1=<br> '''Identifier''': streetrailwayjo241904newy ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Fstreetrailwa... |
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