During a routine inspection of a commercial building, you notice that the floor joists are spaced at 16 inches on center. What is the minimum size of the joists required according to ACI 318-19?

Exam tip

Remember to consider the spacing and load requirements when determining the appropriate joist size.

Why C is correct

ACI 318-19 specifies that for joists spaced at 16 inches on center, a minimum size of 2x10 is required to support the intended load.