| 摘要 |
A rail car transporting system is used to transport relatively heavy structures by rail car, particularly prefabricated concrete structures. At least one pair of portable retaining devices are configured to retain the structure on the rail car generally at opposite longitudinal sides thereof. Each retaining device includes a base member positionable under the structure with a vertically extending boss member configured on the base member. This boss member has a shape and size so as to fit into a recess defined in the bottom of the structure. Each of the retaining devices also includes at least one securing device that is configured to secure the retaining device to the rail car such that the structure is retained on the rail car by engagement of the boss members within the recesses.
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