Which of the following components requires special inspections for steel construction?

Material verification of structural steel is essential to ensure that the steel being used in a project meets the specified standards, including strength and quality. This verification typically includes checking that the steel is manufactured according to relevant codes and standards, as well as confirming that it has the proper certifications from its manufacturer.

Special inspections in this context are conducted by certified inspectors to assess the materials and workmanship, ensuring that structural integrity is maintained throughout the construction process. It's critical for the safety and reliability of the overall structural system, as any defects in the steel could potentially compromise the building's performance.

The other options do not typically require special inspections in the same capacity as material verification. Lower strength bolts, for example, can generally be installed following standard construction practices without the same level of scrutiny as structural steel. Non-welding steel components may not have the same inspection requirements, as they may not directly impact the structural integrity as much as welded components do. Concrete forms also do not fall under the category of special inspections typically required for structural steel; they are monitored through different processes primarily related to concrete placement and curing rather than the properties of the forms themselves.