Roof Pitch Multiplier Table

The formula for the roof pitch multiplier comes from the famous pythagorean theorem.

Roof pitch multiplier table.

How to find your what roof pitch category. The roof pitch multiplier table is very helpful in giving correct and reliable roof measurements and uses pythagorean theory. We excluded roof multipliers for pitch below 3 and above 12 for the following reasons. With pitch under 3 you can easily walk on the roof to get the exact measurements as that is usually a flat roof.

Now solving for c in the equation above gives. If you know the pitch of a roof you can use the numbers in the following pitch table to do the following. Determine how many square feet of roof area a building has by measuring from the ground. For roof slopes expressed as x in 12 rise in run the roof pitch multiplier is determined by finding the square root of rise run 1.

Accurate roof calculations are achieved using this table and all you need to do is measure the roof width and length and then you are ready to do a roof pitch measurement. Roof pitch multiplier table. Where a is the rise of the roof b is the run of the roof and c is the rafter hypotenuse of the triangle with side lengths a and b. This roof pitch table displays a multiplier for adding for different roof pitches.