Coastal and Floodplain Construction Inspector's Practice Exam

What is the Fb value for a #2 Southern Pine 2 X 8 Minimum Sheathing materials?

1. 2000

2. 2200

3. 2500

4. 1800

The correct answer is: 2200

The Fb value, or bending strength value, is an important property used in the design and evaluation of lumber, particularly in construction applications. For #2 Southern Pine, a species commonly used for structural purposes, the Fb value provides a measure of the material’s ability to withstand bending loads without failing. In the case of minimum sheathing materials, #2 Southern Pine boards like the 2 X 8 typically have an Fb value of 2200 psi. This value is derived from standardized tables established by the American Wood Council and reflects the average performance characteristics of the wood under appropriate conditions. This value is vital in ensuring that the lumber can support the intended loads while maintaining structural integrity and safety. Using the correct Fb value is critical for engineers and inspectors as they design and evaluate building components. Utilizing an incorrect Fb value can lead to potential structural failures if the materials are not capable of handling the stresses they will encounter. Understanding this context around the Fb value, particularly for #2 Southern Pine sheathing materials, reinforces its importance in ensuring the overall stability and safety of construction projects.