It is calculated by nominal, not actual, dimensions of lumber.

The first time different stadiums were shown graphically on the screen, with game play adjusted for their actual dimensions.

My scoring always exceeds the trophy's actual dimensions at the time of its demise.

But when balloons were launched over the quarry last April to show the actual physical dimensions of the plant, "invisible" went out the window.

Learn about the nominal versus actual dimensions of lumber here.

Although the car may look large, the actual dimension is actually modest.

The actual dimensions for softwood may vary by up to an eighth of an inch.

The whole space manages to be at once more vast and more intimate than its actual dimensions might suggest.

I think it makes sense that regardless of actual dimensions, length is associated with direction of flow.

Therefore, a pair of tolerances, upper and lower, defines a range within which an actual dimension may fall while still being acceptable.