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Loading gauge#Freight

AAR
Plate
Width Height Truck centers Comments Image
ft in m ft in m ft in m
B 10  8  3.25 15  1  4.60 41  3  12.57 For longer truck centers, the width is decreased according to graph AAR Plate B-1 on a 441 ft 8+38 in (134.63 m) radius curve[1] or AAR Plate D-1[2]
C 10  8  3.25 15  6  4.72 46  3  14.10 For longer truck centers, the width is decreased according to graph AAR Plate C-1 on a 441 ft 8+38 in (134.63 m) radius curve[1] or AAR Plate D-1[2]
E 10  8  3.25 15  9  4.80 46  3  14.10 However the top of rail clearance is 2+34 in (70 mm) instead of 2+12 in (64 mm).[2][3]
F 10  8  3.25 17  0  5.18 46  3  14.10 As with AAR Plate C but 18 in (457 mm) taller than AAR Plate C and 15 in (381 mm) taller than AAR Plate E, and the car cross section is larger at the top than AAR Plate E.[2]
H 10  8  3.25[4] 20  3  6.17 62  7  19.08[4] e.g. double stacked containers in well cars. The cross section at the bottom of the well car differs from the X section of all other AAR plates. X section at center of car[2][5][4]
H 10  1  3.07[2] 20  3  6.17 63  9  19.43 e.g. double stacked containers at greater than 63 ft 9 in (19.43 m) truck centers
The cross section at the bottom of the well car differs from all other AAR Plates.[2][6] in well cars[4]
--- 9  10.25  3.00[4] 3  11  1.19[4] 66  0  20.12[4] e.g. 85-foot-2+12-inch (25.97 m)[4] long flatcars, *Height of deck at center of car[4] Width covered by AAR Plate D-1.[2]
9  1  2.77[4]
J 10  8  3.25 19  0  5.79 55  0  16.76 Truck centers can be more. Widths covered by AAR Plate D-1.[2]
K 10  0  3.05 20  3  6.17[2] 65  0  19.81 e.g. Autorack (road vehicles on trains). Width at center of car covered by AAR Plate D-1[2][4][7]
L 10  8  3.25 16  3  4.95 46  3  14.10 For locomotives only[2]
M 10  8  3.25 16  3  4.95 46  3  14.10 For locomotives only [2]
  1. ^ a b Cite error: The named reference gauge was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i j k l m Cite error: The named reference gauge2 was invoked but never defined (see the help page).
  3. ^ Car and Locomotive Cyclopedia of American Practice (1984 ed.). Association of American Railroads Mechanical Division. 1984. pp. 91, 92. OCLC 5245643.
  4. ^ a b c d e f g h i j k "Guide to Railcars". 31 October 2011. Archived from the original on 31 October 2011.
  5. ^ April 2001 Official Railway Equipment Register "Archived copy" (PDF). Archived from the original (PDF) on 9 May 2013. Retrieved 23 November 2012.{{cite web}}: CS1 maint: archived copy as title (link) "Archived copy" (PDF). Archived from the original (PDF) on 1 April 2010. Retrieved 23 November 2012.{{cite web}}: CS1 maint: archived copy as title (link)
  6. ^ April 2001 Official Railway Equipment Register "Archived copy" (PDF). Archived from the original (PDF) on 9 May 2013. Retrieved 23 November 2012.{{cite web}}: CS1 maint: archived copy as title (link) "Archived copy" (PDF). Archived from the original (PDF) on 1 April 2010. Retrieved 23 November 2012.{{cite web}}: CS1 maint: archived copy as title (link)
  7. ^ "Autorack" (PDF).[permanent dead link]