Rafter Math Practice 1
Start
Information needed to layout a rafter:
Span - 14' Slope - 7/12 (Rise/Run)
Projection - 10" Seat Cut - 4"
Tail Plumb - 5" Ridge Thickness - 1.5"
Information needed to layout a rafter:
Span - 14' Slope - 7/12 (Rise/Run)
Projection - 10" Seat Cut - 4"
Tail Plumb - 5" Ridge Thickness - 1.5"
Span - 7' Units Run - 7
Unit Rafter Length - 13.89"
Congratulations! You have found all necessary information to layout your first rafter! Span - 14' Slope - 7/12 (Rise/Run)
Projection - 10" Seat Cut - 4"
Tail Plumb - 5" Ridge Thickness - 1.5"
Span - 7' Units Run - 7
Unit Rafter Length - 13.89" Rafter Line Length - 97.23" Rafter Overhang - 11.53" Total Rafter Length - 108.76"
Rafter Math Practice 1
High School
Created on April 22, 2026
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Transcript
Rafter Math Practice 1
Start
Information needed to layout a rafter: Span - 14' Slope - 7/12 (Rise/Run) Projection - 10" Seat Cut - 4" Tail Plumb - 5" Ridge Thickness - 1.5"
Information needed to layout a rafter: Span - 14' Slope - 7/12 (Rise/Run) Projection - 10" Seat Cut - 4" Tail Plumb - 5" Ridge Thickness - 1.5" Span - 7' Units Run - 7 Unit Rafter Length - 13.89"
Congratulations! You have found all necessary information to layout your first rafter! Span - 14' Slope - 7/12 (Rise/Run) Projection - 10" Seat Cut - 4" Tail Plumb - 5" Ridge Thickness - 1.5" Span - 7' Units Run - 7 Unit Rafter Length - 13.89" Rafter Line Length - 97.23" Rafter Overhang - 11.53" Total Rafter Length - 108.76"