During a floor framing inspection, the inspector notes that several I-joists have service holes cut too large and too close to the flange. What is the most likely consequence of this installation error?

Question: During a floor framing inspection, the inspector notes that several I-joists have service holes cut too large and too close to the flange. What is the most likely consequence of this installation error?

Answer options:

• The subfloor will squeak excessively. ✅ The joists will be unable to carry the design load, leading to potential floor sag or failure.
• It will cause excessive vibration when people walk on the floor.
• The HVAC ducts will not fit through the holes as intended.

Correct answer: The joists will be unable to carry the design load, leading to potential floor sag or failure.

Explanation: Cutting service holes too large or too close to the flanges of an I-joist can significantly reduce its structural integrity, compromising its ability to carry the design load. This can lead to excessive deflection, sag, or even catastrophic failure. While other issues like squeaks or vibration might occur due to general framing problems, direct structural failure is the primary concern with improperly cut I-joists.