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This decking was replaced in 1949 with 3-inch (76 mm; 0.045 sm) concrete-filled "I-beam lok" grating topped with a 2.25-inch (57 mm; 0.0336 sm) thick bituminous wearing surface. At this time, all bearings were replaced, and the trolley car tracks were removed, as were granite blocks. The trolley car poles were reused for street lights.
The Gomaco Trolley Company is a manufacturer of vintage-style streetcars (alternatively called trolleys in the US, or trams in much of the world), located in Ida Grove, Iowa, United States. The company has supplied replica-vintage streetcars to several transit systems in the US, and has also restored and rebuilt authentic vintage streetcars for ...
Underslung (lower-beam) launching gantry used for Skyline guideway construction (2015). A launching gantry (also called bridge building crane, and bridge-building machine) is a special-purpose mobile gantry crane used in bridge construction, specifically segmental bridges that use precast box girder bridge segments or precast girders in highway and high-speed rail bridge construction projects.
Flat wagons for carrying timber: the Class Snps 719 (front) and the Class Roos-t 642 (behind). Flat wagons (sometimes flat beds, flats or rail flats, US: flatcars), as classified by the International Union of Railways (UIC), are railway goods wagons that have a flat, usually full-length, deck (or 2 decks on car transporters) and little or no superstructure.
This observation is the basis of the I-beam cross-section; the neutral axis runs along the center of the web which can be relatively thin and most of the material can be concentrated in the flanges. The ideal beam is the one with the least cross-sectional area (and hence requiring the least material) needed to achieve a given section modulus.
similar to series 3 but with diesel-electric propulsion; built for Public Service Coordinated Transport 729 Series 5: 1937: 195: 36: 213 + 7 ⁄ 8 in (5.43 m) GM series 450 supercharged 6 cyl. gas-electric: rear: transit: similar to series 3 but with improved chassis and drop-sash windows; built for Public Service Coordinated Transport 729 ...
Humboldt Transit Company [3] Electric September 15, 1903: February 20, 1940 Visalia Electric Railroad [3] Exeter: Electric Interurban 1904: 1944 Diesel 1944: 1992 Fresno Traction Company [3] Fresno: Horse Streetcar January 25, 1889: September 1901 Electric October 19, 1902: May 20, 1939 Glendale and Montrose Railway [3] ♦ Glendale: Electric ...
The design of the bridge, more a trestle, was to allow the trolley to negotiate a 12-foot (3.7 m) switchback, over 500 feet (150 m) of track, at a 4% grade in a 340° turn. The wooden structure resembled a section of roller coaster offering an awesome sight over the side of the car looking almost 100 feet (30 m) straight down.
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