The correct answer is A.
The illustration SF-0016 shows different methods of fitting shoring, and option A depicts the correct way to do so. The key principle in fitting shoring is to ensure that the load is evenly distributed across the entire surface, avoiding any gaps or uneven pressure. Option A demonstrates this by having the shoring fit snugly against both the overhead and the deck, creating a stable and secure support structure.
The other options (B, C, and D) show less optimal arrangements, where the shoring may not make full contact with one or both surfaces, leading to potential instability or uneven load distribution. Therefore, option A represents the proper, regulated method for fitting shoring based on the principles of load distribution and structural integrity.