Carpentry Precision Exam Practice

To determine the total number of board feet in the given studs, it's essential to understand how to calculate board feet for a piece of lumber. The formula for calculating board feet is:

Board Feet = (Thickness in inches × Width in inches × Length in feet) / 12

In this case, each stud measures 2 inches in thickness, 4 inches in width, and 12 feet in length. Plugging these dimensions into the formula:

1. Calculate the board feet for one stud:

(2 inches × 4 inches × 12 feet) / 12 = 8 board feet per stud.

2. Since there are forty studs, multiply the board feet per stud by the total number of studs:

8 board feet/stud × 40 studs = 320 board feet.

Thus, the total for forty 2" x 4" x 12' studs is 320 board feet. This calculation aligns perfectly with the results of the formula and the multiplication process, validating the choice.