Framing & StructuralQuestion 329 of 700
CALCULATION: A hip rafter runs diagonally across the plan corner of a roof. Compared with a common rafter having the same rise, the hip rafter is:
a.Longer, because its horizontal run is the diagonal of the common rafter's run
b.Shorter, because it is steeper
c.Exactly the same length
d.Always half the length of the common rafter
Explanation
A hip rafter travels along the diagonal of the corner, so its horizontal run is longer (the diagonal of the square formed by the common-rafter runs), making the hip rafter longer than a common rafter of the same rise. It is not shorter, equal, or half length; the diagonal run is what lengthens it.
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