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Roof pitch describes slope using rise:run ratio or angle. Calculating pitch angle from measurements helps with roofing material selection and water drainage analysis.

공식

Pitch angle = arctan(rise / run); also expressed as X:12 ratio

단계별 가이드

  1. 1Measure vertical rise and horizontal run of roof section
  2. 2Calculate rise/run ratio
  3. 3Convert to angle or standard 12-inch run notation

풀어진 예시

입력
Rise: 6 ft, Run: 12 ft
결과
Pitch = 6:12 or 26.6°
Common residential roof angle

피해야 할 일반적인 실수

  • Measuring along sloped surface instead of horizontal/vertical
  • Confusing rise and run

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