Hi guys, i have a question, you guys ,when you talk of pitch of a roof say the pitch was less than 4:12 etc, im not sure what that actually means we say in degrees as in a 33 degree roof, can some one explain please?
It's the inch rise of the roof every horizontal 12" or one foot run. It's probably a US thing. For instance, I didn't know 50 mm is about 2". I had to go to a metric conversion chart. A 4:12 = 18.5 degrees.
4:12 means that for ever 12" horizontally I travel, I am moving 4" vertically. If you take a right-triangle and the base is 12", the side will be 4". the sidSame thing Mike said above, but I felt like typing it too
The pitch of a roof is determined by the angle of descentfrom the most important thing about the pitch of a roof is its slant. The higher the angle is the more protected it will be. A pitch is measured by the run and rise. For example, a 4/12 pitch means the roof rises four inches for every twelve inches it runs
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