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.

Octagon roof framing calculator.

Use it to calculate your gazebo layout. Very simple to use. Octagon tower ring dxf auto generated dxf cad file of rafter drawing each time script is run. 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.

Select and re calculate to display. Porch roof extensions for hip roof porch extensions from an existing building wall you can use half the calculator results. Minus ridge thickness to allow for ridge becoming pole plate roof peak will be slightly higher ridge thick must be same. 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.

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.