Octagon Hip Roof Calculator

Use at your own risk.

Octagon hip roof calculator.

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. The hip rafter angle is not the same as a 90 plan angle. The standard definition of an octagon is something along the lines of. Or they could have purchased a chappell master framing square that has the hexagon and octagon roof framing information printed on the square.

This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof. For example a 12 12 roof pitch would have 11 1 16 12 pitch hips. An octagon is a polygon with 8 sides delimiting a closed area anyone with a basic understanding of greek should be able to easily answer the question how many sides does an octagon have without any notions of mathematics. 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.

That is because octo in greek means. The hip rafter pitch is the common rafter pitch over 13 in like 8in 13in for an 8in 12in roof pitch. 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.

Here s a drawing showing how to calculate the hip rafter slope angle for an octagon roof the old fashion way using a cmc calculator. The pitch is based on a 12 run on the framing square. This calculator will help you estimate hip roof parameters including rafters and roof area person outline anton schedule 2011 08 29 17 53 20 one of users asked us to create calculator which will help him estimate hip roof parameters like rafter s lengths roof rise and roof area. Explore a number of housing related calculators as well as hundreds of other calculators covering topics such as finance math health fitness and more.

The octagon plan angle is 67 50. All online tools use javascript to calculate the dimensions. How to use the hip roof framing calculator the hip roof framing calculator returns the value of the main rafter the side rafter the length of the hip the height of the knee wall and the lengths of the jack rafters. If the answers look wrong then verify the answers with a calculator.