Which end shape is characteristic of the DOT 406 cargo tank?

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Multiple Choice

Which end shape is characteristic of the DOT 406 cargo tank?

Explanation:
End shape is a quick visual cue for identifying the type of cargo tank. For a DOT 406 tank, the ends are large oval (elliptical). This shape helps distribute stress smoothly along the ends and reduces the risk of weaknesses at corners, which is important for a non‑pressure tank carrying flammable liquids like gasoline. The curved ends also fit the tank’s internal design and support structure, making it easier to accommodate baffles and fittings while maximizing usable volume. Recognizing the large oval ends helps distinguish DOT 406 from other tank types that use circular or flat ends.

End shape is a quick visual cue for identifying the type of cargo tank. For a DOT 406 tank, the ends are large oval (elliptical). This shape helps distribute stress smoothly along the ends and reduces the risk of weaknesses at corners, which is important for a non‑pressure tank carrying flammable liquids like gasoline. The curved ends also fit the tank’s internal design and support structure, making it easier to accommodate baffles and fittings while maximizing usable volume. Recognizing the large oval ends helps distinguish DOT 406 from other tank types that use circular or flat ends.

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