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1. YouTube - Power Tools & Carpentry Skills : Common Rafter Layout Common rafter layouts use the Pythagorean Theorem to determine the length of the rafters needed for building a roof at a given pitch.
2. Common Rafter Layout: Power Tools & Carpentry Skills | eHow.com Common Rafter Layout. Part of the series: Power Tools & Carpentry Skills. Common rafter layouts use the Pythagorean Theorem to determine the length of the ...