How can a special inspector verify that a structural steel member is suitable for its location in the building?

To verify that a structural steel member is suitable for its location in the building, it is essential to check the fabricator's marking on the member. This marking typically contains critical information such as the identification number, material specifications, and grade of the steel. This helps ensure that the member has been manufactured according to relevant codes and standards, indicating its suitability for the specific structural application.

The marking serves as a reliable reference that ties the structural member back to the documented specifications and certifications made by the fabricator. Therefore, a special inspector can ascertain that the member is made from the correct material and meets design criteria by confirming the properties as per the marking.

While the other options may contribute to the assessment process, they do not, on their own, provide the same level of direct verification regarding the member's compliance with specified requirements.