The fire-resistance-rated wall detail calls for Type X gypsum board. Which board thickness is commonly associated with Type X wallboard in rated assemblies?
Correct Answer
C) 5/8 in.
Type X gypsum board is commonly 5/8 in. thick and manufactured with a fire-resistant core for rated assemblies. Other choices are standard or specialty thicknesses that do not match the common Type X designation.
Why This Is the Correct Answer
Type X gypsum board is commonly 5/8 in. thick and manufactured with a fire-resistant core for rated assemblies. Other choices are standard or specialty thicknesses that do not match the common Type X designation.
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