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Roof rise and run calculator
Roof rise and run calculator









roof rise and run calculator

These range from the length, width, and height of specific parts of the stairs, to where doors are placed in relation to stairs the arc of a door must be completely on the landing or floor and not be allowed to swing over steps. Stairs come in many different forms, and while building a basic staircase may appear to be a simple task, there are actually a number of parameters, calculations, and building codes that must be considered. Press the INV button on your calculator (sometimes called 2nd function)Įxample: Let’s assume your climb gains 1,000 feet in altitude (the rise) and the horizontal distance as measured on the map is 1,000 feet (the run).Stair terminology and common building codes To calculate this, you divide the rise divided by the run, and then obtain the inverse tangent of the result. Multiply 1.4 by 100 to derive percent of slope: 140%Īngle of slope represents the angle that’s formed between the run (remember it’s an idealized flat surface that ignores elevation change) and your climb’s angular deviation from that idealized flat surface. Multiply 0.166 by 100 to derive percent of slope: 16.6%Įxample: let’s assume your climb gains 700 feet in altitude (the rise) and the horizontal distance as measured on the map is 500 feet (the run). Multiply 0.5 by 100 to derive percent of slope: 50%Įxample: let’s assume your climb gains 500 feet in altitude (the rise) and the horizontal distance as measured on the map is 3,000 feet (the run).

roof rise and run calculator

The "run" assumes you're traveling on an idealized flat surface – it does not account for the actual distance traveled once elevation change is factored in.Įxample: let’s assume your climb gains 1,000 feet in altitude (the rise) and the horizontal distance as measured on the map is 2,000 feet (the run). Percent of slope is determined by dividing the amount of elevation change by the amount of horizontal distance covered (sometimes referred to as "the rise divided by the run"), and then multiplying the result by 100.











Roof rise and run calculator