Calculated Industries 4090 - Manual (Page 86)

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Rafters: Rafters are inclined roof support members. Rafters include
the following types:
• Common Rafter: The Common connects the plate to the ridge
and is perpendicular to the ridge.
• Hip Rafter: The Hip rafter extends from the corner of two wall
plates to the ridge or King rafter at angle other than 90°. The Hip
rafter is an external angle of two planes.
• Valley Rafter: The Valley rafter extends from the corner of two
wall plates to the ridge or King rafter at angle other than 90°.
The Valley rafter is an internal angle of two planes.
• Jack Rafters: Rafters that connect the Hip or Valley rafter to the
wall plate.
• Irregular Hip/Valley Jacks: Jack rafters found in Dual-Pitch or
“Irregular” roofs.
Regular Roof: A standard roof where the Hips and/or Valleys run at
45° and have the same Pitch/Slope on both sides of the Hip and/or
Valley.
Irregular Roof: A non-standard roof where the Hips and/or Valleys
bisect two different Pitches/Slopes, or have “skewed wings” or
Irregular Jacks.
Rake-Wall: A gable end wall that follows the Pitch/Slope of a roof.