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Octagon roof framing calculator.
Enter the extension wall length into wall length and double the extension wall width then minus ridge thickness into the wall width entries.
This octagon tower rafter script calculator will return the octagon rafter geometry angles and trigonometry rafter measurements for octagon tower roof framing with a structural ring support.
Use it to calculate your gazebo layout.
Supported octagon roof framing dimensions octagon 4 butt hip rafter dimensions.
The octagon layout calculator is a handy carpenter s tool for laying out a perfect octagon.
This calculator will also calculate the king post radius the king post rise the king post minimum height and the octagon hip rafter to king post length.
Fraction precision set 1 8 1 16 1 32 1 64 decimal inch metric all inch inputs and dimensions are actual physical finished sizes unless otherwise noted.
Octagon tower ring dxf auto generated dxf cad file of rafter drawing each time script is run.
Very simple to use.