In a space with an 84-inch ceiling, the acceptable height for a wall-mounted visual appliance is 78 inches above finished floor. Which choice represents this value?

In a space with an 84-inch ceiling, the acceptable height for a wall-mounted visual appliance is 78 inches above finished floor. Which choice represents this value?

• A. 68 inches
• B. 78 inches
• C. 84 inches
• D. 96 inches

Answer: (B)

The height is defined by how far up from the finished floor the device should be mounted. Since the spec says 78 inches above the finished floor, that exact distance is the required height, regardless of the ceiling being 84 inches tall. So the correct value is 78 inches. The other numbers would place the device too low, at the ceiling line, or above the available ceiling height, which isn’t feasible in this space.

The height is defined by how far up from the finished floor the device should be mounted. Since the spec says 78 inches above the finished floor, that exact distance is the required height, regardless of the ceiling being 84 inches tall. So the correct value is 78 inches. The other numbers would place the device too low, at the ceiling line, or above the available ceiling height, which isn’t feasible in this space.