Story Pole: Framing Calculator

Story Pole is a construction calculator that does feet-inch-fraction arithmetic exactly, and tells you when it cannot. A story pole is a board marked once with every height on a job, so nothing gets re-measured and no error accumulates. This app is that board. WHAT IT WORKS OUT Triangles. Rise, run, diagonal, angle — give it any two and it gives you the rest, with the pitch and the area. It says when the answer is exact: a 3-4-5 or a 5-12-13 comes out whole and it tells you so. Oblique triangles too, and when two triangles fit your measurements it shows both rather than picking one. Roof framing. Common, hip, valley and jack rafters. Line length, ridge deduction, cut length, plumb and seat cuts, HAP, tail, jack common difference, cheek cut. Pitch as rise, degrees or percent, all three linked so they cannot disagree. Compound mitre. The two numbers you dial into the saw, for any spring…