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English: Dimensional comparison of 14 passenger inclines (extant and historical) of Pittsburgh, Pennsylvania.
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Source data

Height Length Horiz. length Grade or angle Source(s)
Castle Shannon 451 1375 [1]
Castle Shannon 2 2112 (Variable) [1][2]
Clifton 160 (est.) 275 (est.) [3][2]
Duquesne 400 794 [4]
Ft. Pitt 135 350 [1]
Knoxville 375 2640 [1]
Monongahela 375 640 [1]
Mt. Oliver 377 1600 20% (lower 400 ft); 25% (rest) [1]
Norwood 125 (est.) 640 (est.) [3][5]
Nunnery Hill 220 (est.) 1100 (est.) 16.75% (below curve); 24% (above curve) [6][3][2]
Penn 330 840 [1]
Ridgewood 278 32° 31' [7]
St. Clair 361 2060 14% bottom; 29% top (parabolic arc profile) [1][8]
Troy Hill 160 370 [9]

Sources

  1. ↑ a b c d e f g h (October 1891). "The Inclined Planes". The Street Railway Journal Souvenir: 37–40.
  2. ↑ a b c City of Pittsburgh Geodetic and Topographic Survey Maps, 1923-1961. Historic Pittsburgh.
  3. ↑ a b c G.M. Hopkins Company Maps. Historic Pittsburgh.
  4. ↑ About the Incline. Duquesne Incline. Retrieved on 18 December 2016.
  5. ↑ Google Earth elevation data.
  6. ↑ Plan & Profile: Nunnery Hill Inclined Plane. Retrieved on 18 December 2016. Sometimes-cited height of 300 ft is inaccurate.
  7. ↑ (31 December 1886). "A Passenger Incline Railroad". Railroad Gazette 18 (53): 912.
  8. ↑ (28 September 1904). "Incline Cars Make Mad Dash". The Pittsburgh Gazette: 1. (Values for top and bottom grades are evidently transposed; they match map data if switched.)
  9. ↑ Diescher, Samuel (June 1897). "American Inclined Plane Railways". Cassier's Magazine 12 (2): 89.

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