Roof Slope Factgore

For instance the ever last roofing company distributes a chart to the general public.

Roof slope factgore.

Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter. For example if you measure 4 inches the pitch of your roof is 4 12. Roof pitch calculator roof slope calculator the roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need. The following table shows how the same common roof slopes can be expressed using rise in run ratios degrees and percentages.

This will give you the rise over run or pitch. You could calculate the slope factor for every single roof pitch but as a public service many roofing companies provide slope factor charts. So a roof with four inches of rise every 12 inches horizontally run would have a slope of 4 12 sometimes displayed as 4 12. The roof slope factor chart also consists of conversion factors to determine the slope of the roof.

It s just a little math. Roof area in square metres length in metres width in metres slope factor roof area in square feet length in feet width in feet slope factor. A roof pitch multiplier also known as a roof pitch factor is a number that when multiplied by the area covered by a sloped roof gives the actual area of the roof. Charts list the slope factor for various pitches usually from 1 12 to 12 12.

Roof pitch angle and slope factor charts roof pitch is a term describing how steep or flat your roof slope is. The slope factor works with metric and imperial measurements. Degrees to roof pitch rise in run to see a table. The combination of two numbers are used to display or show the roof pitch.

For instance if the measurement was 3 your roof slope factor would be 3 12 and you. The maths behind this number is that it is the square root of rise run 2 1. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. A 10 slope roof should not be confused with a 10 pitch roof as a 10 slope roof means that the roof rises by ten inches for every foot of run.

In construction the slope factor can be used to easily calculate the area of a roof. The slope of a roof often referred to as the pitch is determined by rise over run the roof s vertical rise in inches for every twelve inches of horizontal length the run. The roof slope factor is written as x 12 where x is the vertical distance you measured from roof to level. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually.