Roof Pitch Multiplier Table

The roof pitch multiplier table is very helpful in giving correct and reliable roof measurements and uses pythagorean theory.

Roof pitch multiplier table.

Roof pitch multiplier table. We excluded roof multipliers for pitch below 3 and above 12 for the following reasons. 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. Now solving for c in the equation above gives.

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. 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. This roof pitch table displays a multiplier for adding for different roof pitches.

With pitch under 3 you can easily walk on the roof to get the exact measurements as that is usually a flat roof. A roof pitch multiplier also called a roof pitch factor is a number that is multiplied by the area covered by a sloped roof to produce the area of the actual surface of the roof. The hip and valley factor is a number that is multiplied by the actual run horizontal distance of a common rafter to determine the length of a hip or valley rafter. This table provides the hip and valley factor for common roof pitches as well as the underlying equation for the factor.