Rafter Layout: Review

1. What is the Span (for Rafter Layout)?

• The span is the total distance of your building (outside wall to outside wall)
• The span is angle of a speed square
• The span is the width of your porch.

2. Which rafter length is created 1st using the Step-off method.

• Theoretical Rafter Length
• Actual Rafter Length

3. Which of these 2 is showing the length that is used on the finished house.

• Actual Rafter Length
• Theoretical Rafter Length

4. What is the total Run (in Rafter Layout)?

• The total run is the half of the span distance.
• The total run is the length of all the walls in your house added up.

5. Which tool is used to layout, mark off and cut lines of the rafter.

• Framing Square
• Straight Ruler
• Calculator
• Tape Measure

6. What is unit run (in Rafter Layout)?

• Unit run is always 12"
• Unit run is the width of the drywall inside your house.
• unit run is the total area of your roof

7. What is the Slope (also called the unit length) in Rafter Layout?

• The slope is the angle (or the ratio) of the unit run to the unit rise.
• The slope is the depth your foundation into the ground.
• The slope is the angle where the siding of your house meets your roof.

8. What is unit rise (in Rafter Layout)?

• Unit rise is the vertical distance for every 12" (which is the unit run)
• Unit rise the how tall your building is.
• Unit rise is how tall your ceiling is inside your house.

9. If the unit rise is 7". What inch mark on the framing square you line up with the edge of the board?

• 7"
• 12"
• 10"

10. What tool can you use to help you find the slope (also the unit length)?

• a framing square.
• a miter saw.
• a tape measure.