Final answer:
The hallway is NOT included when calculating the usable area of a dwelling to compute the required lighting load.
Step-by-step explanation:
When calculating the usable area of a dwelling to compute the required lighting load, the bedrooms, bathrooms, hallways, and living rooms are typically included. However, the hallway is NOT included in the calculation. This is because hallways are considered transitional spaces and are not actively used for activities that require lighting for extended periods of time.