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Question 15

In estimating lumber take-offs, the calculation for 'board feet' is derived by using what formula?

A. The volume of a piece of wood, 1 inch thick and 100 square feet, divided by 1000. This gives a standard linear board foot measurement.

B. The length x width x thickness of the wood.

C. The length x width x thickness of the wood expressed in linear feet (l.f.).

D. The number of feet of wood, the number of pieces, the thickness, width, and length of the wood, divided by 12 inches.

Answer :

To calculate the board feet of a piece of lumber, you will use a specific formula. "Board feet" is a unit of measure used in the lumber industry to measure the volume of wood. Here's a step-by-step explanation of how to calculate it:

1. Understand the Definition:
- A "board foot" is a volume measure that equates to a piece of wood 1-inch thick, 1-foot wide, and 1-foot long.

2. The Formula:
- The standard formula to calculate board feet is:
[tex]\[
\text{Board Feet} = \frac{\text{Length (in feet)} \times \text{Width (in inches)} \times \text{Thickness (in inches)}}{12}
\][/tex]
- This formula accounts for the wood's length in feet, and both the width and thickness in inches.

3. Choice Selection for the Question:
- From the given options in the multiple-choice question, the correct one that aligns with this formula is:
- "Number of feet of wood, the number of pieces, the thickness, width, and length of the wood, divided by 12 inches."

This comprehensive approach helps in determining the board feet measurement accurately for any given piece of lumber.

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Rewritten by : Barada