Loading gauge
Freight
The American loading gauge for freight cars on the North American rail network is generally based on standards set by the Association of American Railroads (AAR) Mechanical Division.

Loading gauge

Section Title: Freight
Table Section Text: The American loading gauge for freight cars on the North American rail network is generally based on standards set by the Association of American Railroads (AAR) Mechanical Division.

Plate	Width	Height	Truck centers	Comments	Image

ft in	m	ft in	m	ft in	m

B	10 8	3.25	15 2	4.62	41 3	12.57	For longer truck centers, the width is decreased according to graph AAR Plate B-1	-

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	-

E	10 8	3.25	15 9	4.80	As with Plate C but 3 in (76 mm) taller than Plate C, and the car cross-section is larger at the top	-

F	10 8	3.25	17 0	5.18	As with Plate C but 18 in (460 mm) taller than Plate C and 15 in (380 mm) taller than plate E, and the car cross-section is larger at the top than plate E	-

H	20 2	6.15	e.g. double stacked containers	-

J	9 11 3⁄8	3.03	e.g. 89-foot (27.1 m) long flatcars

K	10 8	3.25	20 2	6.15	e.g. Autorack (road vehicles on trains)

Sentence(s)

A double stacked container is 6.15 m (20 ft 2 in).

final_sentence: A double stacked container is 6.15 m (20 ft 2 in).