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Coil cars (also referred to as "steel coil cars" or "coil steel cars") are a specialized type of
rolling stock The term rolling stock in the rail transport industry refers to railway vehicles, including both powered and unpowered vehicles: for example, locomotives, freight and passenger cars (or coaches), and non-revenue cars. Passenger vehicles can ...
designed for the transport of coils (i.e., rolls) of
sheet metal Sheet metal is metal formed into thin, flat pieces, usually by an industrial process. Sheet metal is one of the fundamental forms used in metalworking, and it can be cut and bent into a variety of shapes. Thicknesses can vary significantly; ex ...
, particularly steel. They are considered a subtype of the
gondola The gondola (, ; vec, góndoła ) is a traditional, flat-bottomed Venetian rowing boat, well suited to the conditions of the Venetian lagoon. It is typically propelled by a gondolier, who uses a rowing oar, which is not fastened to the hull, ...
car, though they bear little resemblance to a typical gondola.


History

Prior to the invention of this type, coils of sheet steel and other metals were carried on end or in cradles in open or covered gondolas. Load shifting, damage, and awkward loading and unloading were all problems, and since so much sheet steel and other sheet metals are railroad transported, a specialized car was designed for transporting coiled metals. Cars manufactured specifically for coiled lading started to appear in the 1960s. Early examples include the Pennsylvania Railroad G40 and G41 class cars, built in 1964-65.PRR Class G41 data
from Rob Schoenberg's PRR Home page


Construction

The body of a coil car consists of a trough or series of troughs. Most commonly these run lengthwise, but there are transverse variants as well; in either case they are steel and may be lined with wood or other material to cushion the load.The coils are set on their sides in the trough with the core horizontal. Stops may be applied across the trough to keep the coils from shifting. Some coil cars are open at the top, while others that carry commodities that can’t be damaged by the elements are equipped with hoods to cover the load. Some covered cars use a single hood, but more commonly a pair of hoods is provided. Each hood has a lifting point at its center, and often has brackets on the top at the corners in order to allow the hoods to be stacked when not in use. The hoods are largely interchangeable and it is common to see a car with mismatched hoods.


See also

*
Gondola (rail) In US railroad terminology, a gondola is an open-topped rail vehicle used for transporting loose bulk materials. Because of their low side walls, gondolas are also suitable for the carriage of such high-density cargos as steel plates or coil ...
*
Wagon with opening roof The wagon with opening roof is a type of railway goods wagon that is, nowadays, defined and standardised by the International Union of Railways (UIC) as Class "T". They are a large category of rail vehicle, predominantly used for the transport of ...


References


External links

* Coil ca
CN 187186
without hoods, showing how car is loaded {{Freight cars Freight rolling stock