A commercial building is being constructed with a floor framing system. The floor joists are spaced at 16 inches on center. Which of the following is the minimum required span for the joists, according to the 2021 International Building Code?

ICC B2 exam practice question · Building Planning

A commercial building is being constructed with a floor framing system. The floor joists are spaced at 16 inches on center. Which of the following is the minimum required span for the joists, according to the 2021 International Building Code?

A12 feet
B14 feet
16 feet
D18 feet

Exam tip

Always refer to the specific spacing requirements in the IBC for minimum span calculations.

Why C is correct

According to Section 1807.3 of the 2021 IBC, the minimum span for joists with a spacing of 16 inches on center is 16 feet. Options A, B, and D are incorrect as they exceed the minimum span requirement.

Practice 32 more Building Planning questions

Timed mock exams, a wrong book and flashcards — one subscription covers every contractor exam line.

Start studying free

A commercial building is being constructed with a floor framing system. The floor joists are spaced at 16 inches on center. Which of the following is the minimum required span for the joists, according to the 2021 International Building Code?

A commercial building is being constructed with a floor framing system. The floor joists are spaced at 16 inches on center. Which of the following is the minimum required span for the joists, according to the 2021 International Building Code?

More Building Planning questions