Intermodal Dry Cargo CNTR/CSC Reinspection Certifier Practice Test 2025 – The All-in-One Guide to Exam Success!

Question: 1 / 400

Which structural component secures the bottom of the door opening in a container?

Door header

Door sill

The door sill is specifically designed to secure the bottom of the door opening in a container. Its role is crucial in providing structural integrity and ensuring that the doors can properly close and seal off the container. The door sill is typically reinforced to withstand loads and stress that the container may experience during transport and handling.

While the door header supports the top of the door opening and the corner fittings provide structural connection points for the container, these components do not fulfill the same function as the door sill in maintaining the integrity of the bottom of the door opening. The top end rail, meanwhile, is positioned at the uppermost part of the container's structure and does not interact with the door opening in the same way as the door sill does. Understanding the roles of these components is essential for those involved in container certification and inspection processes.

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Corner fitting

Top end rail

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