Which of the following is NOT a major component of DC shoring?

The major components of DC shoring are essential for understanding how to effectively support and strengthen structures during repairs or demolition. In this scenario, the term 'DC shoring' refers to a method used in construction where temporary supports are employed to uphold sections of a structure at risk of collapse.

Among the components listed, the shore, wedge, and strongback are all integral to the shoring system. The shore provides the necessary support to hold up a structure. The wedge is used to adjust and secure the shore in place, ensuring it is tightly fitted and stable. The strongback acts as a horizontal brace that connects multiple shores, distributing the loads evenly and enhancing the overall stability of the shoring system.

In contrast, a drill is not recognized as a foundational component of the shoring process. It is typically associated with general construction or maintenance tasks, such as creating holes in materials. Thus, while it may be a useful tool in the broader context of construction, it does not directly contribute to the function of shoring and is therefore the correct answer to the question regarding which option is NOT a major component of DC shoring.