Octagon Roof Framing Calculator

Supported octagon roof framing dimensions octagon 4 butt hip rafter dimensions.

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. Select and re calculate to display. Octagon tower ring dxf auto generated dxf cad file of rafter drawing each time script is run. The hip rafter pitch is the common rafter pitch over 13 in like 8in 13in for an 8in 12in roof pitch.

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. The octagon layout calculator is a handy carpenter s tool for laying out a perfect octagon. Minus ridge thickness to allow for ridge becoming pole plate roof peak will be slightly higher ridge thick must be same. Very simple to use.

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.