Question

nccer 27105 - floor systems 59min when framing a floor opening, what are the shorter joists installed parallel to the common joists? tail bar cripple header

Explanation:

When framing a floor opening, cripple joists are the shorter joists installed parallel to the common joists. Tail joists are at the end of a floor system, bar is not a standard term in this context, and header joists are perpendicular to common joists (they frame the opening's sides).

Answer:

cripple