Question

What is the rise of a roof if the span is 30 ft and the rafter length is 16 ft?
about 5.6 ft
about 25.4 ft
about 21.9 ft
31 ft

Answer 1

This looks like a Pythagorean theorem problem? I would assume that the larger one is the hypotenuse and one of the legs of the triangle is 16ft. That would yield 900 - 16^2 = rise^2 => rise is about 25.4 ft but I am unsure about what's the rafter length :-)

Answer 2

ok thnx