![]() ![]() Plumb cut: A cut on a rafter or other angled framing member that will be plumb vertically when the member is installed.Hip rafter length (or line length): The length of a hip rafter based on calculations from a framing square or a construction calculator.Height above plate: Distance on a rafter measured in a plumb line from the top outside edge of the plate to the top edge of the rafter.King common rafters: Common rafters in a hip roof that meet at right angles on either side of the hip rafter.Common rafters: Roof framing members that go from the top wall plates to the ridge.Familiarity and basic skills with a framing square.Ability to take accurate measurements and record them. ![]() Familiarity and basic skills with a circular saw.An understanding of basic roof framing and rafter cutting. ![]() To understand how a hip rafter functions in a hip roof and to understand this particular method of calculating and cutting the hip rafter For an excellent article on the traditional way to frame a hip roof, take a look at Tim Uhler’s Framing a Hip Roof, Sep/13. This method is a great fallback that eliminates having to go through the mathematical machinations that the traditional methods for laying out a hip rafter typically require. But given that this column is for tradespeople just starting out or those who may not frame roofs on a regular basis, I wanted to present a simple foolproof approach that anyone can follow for laying out a hip roof. If you were to show the method I describe here to many seasoned framers, they would dismiss it as the work of a weekend warrior or a newbie. Depending on the size of the roof, hips can be doubled or made out of different material, such as LVL. Tim Healey Hip rafters support the two sloping planes that make up a hip roof. ![]()
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