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Rafter Length Calculator helps contractors and tradespeople accurately size, spec, and estimate materials and systems.
Формула
Rafter Length = √(Rise² + Run²) + Overhang
Водич корак по корак
- 1Use Pythagorean theorem with rise and run, add overhang
- 2Apply the formula using your project measurements
- 3Add required safety factors or waste allowances per code
Worked Examples
Инпут
8 ft rise, 16 ft run, 1.5 ft overhang
Резултат
Rafter = √(64+256) + 1.5 = 17.9 + 1.5 = 19.4 ft
Common Mistakes to Avoid
- ✕Not applying code-required safety factors or derating
- ✕Forgetting to account for waste and cut losses in material estimates
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