Autodesk Revit Architecture

[#1]

Hello everyone, I'm still learning revit and need help understanding some things. In a book I'm reading one of my self quiz questions is as follows:

Determine the roof pitch, then it has the typical triangle with 1/2 pitch and 1/4, 1/3, 1/6 and so on. I know rise over run like 5/12, but don't understand the fractions. How do I get 4/12 or 5/12 and so on from the fractions?

[#2]

Fractions are not a typical way to calling out a roof pitch. So my guess is that a 6 in 12 roof or more commonly called a 6 pitch would be 1/2 and a 3 pitch would be 1/4. Where 12/6 = 2 for the first and 12/4 = 3 for the second. Anyone who pounds nails for a living have any other ideas?

Thanks for posting.

[#3]

the way the book has it is a 12/12 = 1/2

a 4/12 = 1/6

[#4 · Accepted solution]

This brings back memories of my registration exam ...

From my college construction book... See attached.

[#5]

perfect thanks