Question 428 Deck General

The correct answer is A) Four lower corner castings. The weight of a container and its contents is supported on deck by the four lower corner castings, which are designed to transfer the load from the container to the deck structure. The corner castings are sturdy, reinforced components at the bottom of the container that serve this purpose. The other answer choices are incorrect because they do not accurately describe the primary load-bearing components of a container. The bottom, side, and end rails provide structural support, but do not directly support the weight on the deck. The bottom flooring alone is also not sufficient to bear the full weight of a loaded container.