Framing & StructuralQuestion 330 of 700
On a wood I-joist, where may holes generally be cut, and which part must never be cut or notched?
a.Anywhere in the flange; the web is off-limits
b.Only in the flange near supports
c.In the web per the manufacturer's hole chart; the flanges must never be cut or notched
d.Anywhere, because I-joists are solid
Explanation
An I-joist carries bending through its top and bottom flanges, so the flanges must never be cut or notched; holes are allowed only in the web and only where the manufacturer's hole chart permits. Cutting flanges destroys the joist's capacity, and I-joists are not solid members.
Law Reference: 2025 CA Residential Code §R502.11Practice all 700 questions free — no signup required.
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