30 Degree Roof Slope

A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.

30 degree roof slope. Angle theta is the inclination to the horizontal of the line ab drawn in the roof and making an angle of 35 degrees with the line of greatest slope. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily. But with the use of a roof pitch in degrees converter you will be able to get the correct measurement.

Keywords roof horizontal length angle triangles degrees slope right triangle degree distance slant trigonometry trig inclination. Roof with a slope of 30 degrees. With the use of this converter it will be easier for you to locate a 30 degree roof pitch 20 degree roof pitch 25 degree roof pitch or a 15 degree roof pitch. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.

Lower slopes don t handle wind driven rain as well. The minimum roof pitch for shedding snow is around 30 or a 6 12 or 7 12 slope although this is not a definite as the material of your roof the direction of the snow and wind are some factors that can affect whether or not snow will slide as roofs of as little as 10 have been reported to shed snow. On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length. Steeper slopes increase the sail effect that makes them susceptible to wind.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio.