如何计算Rafter Length
learn.whatIsHeading
Rafter Length Calculator helps contractors and tradespeople accurately size, spec, and estimate materials and systems.
公式
Rafter Length = √(Rise² + Run²) + Overhang
分步指南
- 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
例题解析
输入
8 ft rise, 16 ft run, 1.5 ft overhang
结果
Rafter = √(64+256) + 1.5 = 17.9 + 1.5 = 19.4 ft
常见错误注意事项
- ✕Not applying code-required safety factors or derating
- ✕Forgetting to account for waste and cut losses in material estimates
准备好计算了吗？尝试免费的 Rafter Length 计算器
自己尝试一下 →