roofing

What are the four key measurements needed to determine the slope of a roof?

• Span, Total Run, Unit Run, Unit Rise

• Ridge, Fascia, Soffit, Overhang

• Length, Width, Height, Depth

• Pitch, Angle, Rise, Run

How is the "Total Run" of a building determined?

• Half the distance of the span

• Twice the distance of the span

• Equal to the total measurement of the building

• Measured from the ridge to the eave

Using the Pythagorean Theorem, what is the Unit Length for a Unit Run of 12 inches and a Unit Rise of 9 inches?

• 15 inches

• 21 inches

• 12 inches

• 9 inches

What two components make up the "bird's mouth" cut on a rafter?

• A heel cut and a seat cut

• A ridge cut and a heel cut

• A seat cut and a soffit cut

• A ridge cut and a soffit cut

Why are rafters initially cut slightly longer than the calculated total rafter length?

• To allow for minor adjustments and account for the ridge board

• To ensure they fit tightly without any gaps

• To make them easier to handle during installation

• To provide extra material for future repairs