Which of the following is NOT considered a type of load on structural steel?

Torsional load is not typically categorized as a primary type of load on structural steel. In structural engineering, loads are generally classified into several main categories for design purposes, with dynamic load, live load, and dead load being the primary considerations.

Dynamic loads include loads that change over time, such as vehicles passing over a bridge. Live loads are transient forces that can vary over time, commonly associated with people or movable objects on a structure. Dead loads, on the other hand, are static forces like the weight of the structure itself, including beams, columns, and roofing materials.

Torsional loads might occur in specific structural situations but are not one of the foundational load types recognized in standard structural design criteria. Hence, identifying torsional load as the option that does not fit within the commonly accepted classification of loads makes it the correct choice in this context.